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11-13-2009, 11:15 AM
HEMORRHAGE
¦ Definition:
It is escape of blood from a blood vessel.
¦ Types:
(I) According to the vessel involved:
1- Capillary haemorrhage: continuous ooze , Stopped by pressure
2- Venous haemorrhage: continuous more from distal end Dark in colour Stopped by elevation of the limb
3- Arterial hge
l Jets synchronous with heart beats.
l Bright red in colour.
l More from proximal end.
l Stopped by ligation of the injured artery, if it can be ligated.
(II) According to the site :
1- External haemorrhage . e.g. haematemesis .
2- Internal hge ; in tissue planes or serous cavities .
(III) According to the time of onset:
1- 1ry hge: at the time of operation .
2- Reactionary hge: within 24 hs after operation or injury due to rise of bl. pr.
3- Secondary hge : due to infection with erosion of the vessels.
¦Natural arrest of haemorhage:
1- Retraction and contraction of injured vessel.
2- Acceleration of natural clotting mechanism.
3- Fall of blood pressure.
4- Pressure of clotting haematoma from outside.
¦Complications:
1- Anaemia in ch. blood loss.
2- Shock and its complications.
3- Infection of a haematoma.
4- False aneurysm if the hematoma connected to blood vessed and gaining fibrous tissue wall.
SOURCE: DR. AYMAN SALEM'S BOOK
Copyright: Vascular Society of Egypt (www.vsegypt.org (http://www.vsegypt.org/)) &Medical Educational web (www.meduweb.com (http://www.meduweb.com/))
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