Danger Area of Face
Definition
Danger area or triangle of the face consists of the area from the corners of the mouth to the bridge of the nose, including the nose and maxilla.

Peculiarity of the veins of the nose area
The facial vein communicates with the cavernous sinus inside the cranium via the ophthalmic vein.
The veins of the face and head do not have one way valves. Therefore blood can flow away from skull and exit the face inferiorly or flow back into the skull to be drained via the internal jugular vein. This bidirectional flow is the cause for "danger". Any infection within the danger triangle may enter the blood stream and pass into the brain causing meningitis or cavernous sinus thrombosis. (CVT)
It is a very rare phenomenon

Clinical presentation
usual cause staphylococcus aureus
oedema of the eyelids and the conjunctive
paralysis of the nerves (3,4,5,6)
which pass through the cavernous sinus

Differential Diagnosis for CVT
Orbital cellulitis.

Treatment
antibiotics
At times surgical drainage



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Topic index : Anatomy - Cardiovascular system                                      Nursing       Anatomy   Question bank        Axillary artery    Vertebral artery        Arch of aorta    Spinal cord - Blood supply    Brain - Blood supply   right atrium  . Interior of the Heart  median cubital vein    Conduction system of heart   Portalvein     Veins of the  lowerlimb                                                                                                                                                                                                                         
Topic -  Index - Anatomy - Gastrointestinal System                                      
Medical Surgical Nursing      Nursing     The tongue    duodenum    Vermiform appendix   posterior relations of stomach  parotid gland    Pancreas                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                .                                                                                                                                                                                                                                                                                                                                                                                                            
Topic -  Index -   Medical Surgical Nursing -   
Disorders of the Reproductive System     Nursing    Anatomy   Index                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            .                                                                                                                                                                                                                                                                                                                                                                                                            
Topic    -    Index    Anatomy  -  Special Senses     special senses    middle ear    ciliary body   intrinsic and extrinsic muscles of the eye refractiveerrors                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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Topic -  Index - Anatomy - Nervous System                                    
Medical Surgical Nursing      Nursing     The tongue        Vermiform appendix         Pancreas            Blood supply to brain   Blood supply to the spinal cord  pyramidal tract   brain stem      Circle of Willis    Meninges   Cerebellum structure and functions    composition and functions of CSF  Basal nuclei   circulation of CSF   Cranialnerves                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          .                                                                                                                                                                                                                                                                                                                                                                                                            
Topic -  Index - Anatomy - Osteology                                 
Osteology    skull    axial skeleton    appendicular skeleton    bones and joints of the upper limb           bones of the skeleton        carpal bones   tarsal bones   joints of the lower limb    synovial joint        cranium    long bone    physiologyofbonehealing                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                .                                                                                                                                                                                                                                                                                                                                                                                                            
                          Topic -  Index - Anatomy - Reproductive System          Reproductive system  Osteology    spermatic cord &  testis   uterus    uterus and its relations                  uterine or Fallopian tubes     maleurethra        prostate     seminal vesicles   questionbank                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               .                                                                                                                                                                                                                                                                                                                                                                                                            
Topic    -    Index    Anatomy  -   Myology    myology  diaphragm  gastrocnemius   deltoid  muscles of the anterior abdominal wall   gluteus maximus                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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Topic -  Index -   Medical Surgical Nursing -   Disorders of GIT
Disorders of the Gastrointestinal System     Nursing    Anatomy   Index    Colostomy & its care     Haemorrhoids   appendicitis   Hepatitis   powerpoints for teaching staff                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        .                                                                                                                                                                                                                                                                                                                                                                                                            
Topic - Index - Medical Surgical Nursing - Disorders of the Reproductive System   Disorders of the Reproductive System     Nursing    Anatomy   Index                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            .                                                                                                                                                                                                                                                                                                                                                                                                            
Topic    -    Index    Anatomy  -  Special anatomical regions - hernia    cubital fossa    popliteal fossa       carpal tunnel    triangles of neck                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
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Topic Index   - Anatomy -  Respiratory system -  lungs  trachea
Topic    -    Index   Anatomy  -  Cytolog and Histology -  cartilage    epithelium                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
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                                      System Index : Anatomy
Medical Surgical Nursing         Anatomy   question bank   short notes  cardiovascular system   nervous system   special senses   endocrine system   respiratory system  urinary sytem    myology,     git  special anatomical regions or mis        body homeostasis cytology & histology blood     reticuloendothelial system        nutrition   blood   reproductive system powerpoints for teaching staff osteology                                                                                                                                                    
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  



Topic    -    Index   Anatomy  - Reticuloendothelial system       structure and function of the spleen    Lymph node              
                          Topic -  Index - Anatomy - Urinary System       urinary bladder    ureter     kidney and other urinary organs      acute renal failure     male urethra      female urethra      prostate gland                 urinary stones     
Embryology
fetal membranes      amnion   graafian follicle  chorion       i












Topic index - Medical Surgical Nursing - Disorders of the Respiratory System
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Topic -  Index -   Medical Surgical Nursing -    Disorders of the Cardiovascular System    Nursing    Anatomy   Index      An introduction to ECG                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         .                                                                                                                                                                                                                                                                                                                                                                                                            
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