Changes

Obstruction of the affected area or embolisation of the thrombus to distant areas results in a variety of clinical signs.  As could be expected, the location of the insult determines the type of presenting signs.  For example, pulmonary emboli cause respiratory problems while portal vein thrombi result in ascites and the possible development of hepatic encephalopathy or portosystemic shunting.

Obstruction of the affected area or embolisation of the thrombus to distant areas results in a variety of clinical signs.  As could be expected, the location of the insult determines the type of presenting signs.  For example, pulmonary emboli cause respiratory problems while portal vein thrombi result in ascites and the possible development of hepatic encephalopathy or portosystemic shunting.

* Venous thrombosis is a fairly common type of thrombus in the veterinary species.

* Venous thrombosis is a fairly common type of thrombus in the veterinary species because:

** This is because:

# Veins are relatively thin-walled and are therefore more susceptible to distortion, inflammatory damage and iatrogenic vene puncture damage.

**# Veins are relatively thin-walled.

# Veins have relatively slower blood flow rates allowing cell aggregates to persist more readily.  

**#* Are therefore more susceptible to distortion, inflammatory damage and iatrogenic vene puncture damage.

   

**# Veins have relatively slower blood flow rates.

Most venous thrombosis in domestic animals results from :

**#* Cell aggregates tend to persist more readily.   

* Extension of inflammatory reactions.

* Most venous thrombosis in domestic animals results from :

* Erosion/disruption caused by malignant tumours.

** Extension of inflammatory reactions.

* Pressure from adjacent space-occupying masses.

** Erosion/disruption caused by malignant tumours.

* Vene puncture damage.

** Pressure from adjacent space-occupying masses.

** Vene puncture damage.

===Capillary Thrombosis===

===Capillary Thrombosis===