Cardiovascular Pathology V Flashcards
What is the definition of Vasculitis?
Inflammatory cells within and around the wall of vessels with concurrent damage to the wall
What is arteritis?
Inflammation of the lining of the arteries
What is phlebitis?
Inflammation of the vessels (specifically veins)
What is EAV (Equine arteritis virus) ?
- Arteritis (inflammation of the arteries)
- It targets endothelial vessels
Give an example of an orbivirus vasculitide
- Bluetongue in sheep
Give two examples of viral vasculitides (swine haemorrhagic)
- African Swine fever- replicates in monocyte lineage
- Classical swine fever- affects leukocytes, endothelium and epithelium
What is heartwater? (cowdriosis)
Bacterial vasculitis commonly caused by ricketssia
causes by Ehrlichia ruminantium of the ricketssia family
What is the gross pathology of cowdriosis?
- Hydropericardium and hydrothorax
- Splenomegaly
What is Rocky Mountain Spotted fever?
a type of rickettsia
* bacterial vasculitis
What is the gross pathology of Rocky Mountain Spotted Fever?
- Oedema of the ears and muzzle
- Petechiation of the skin
- lymphadenomegaly with haeorrhage
- haemorrhage of the skin
What type of infectious vasculitis is mycotic abomasitis?
Fungal
What is the pathogenesis of mycotic abomasitis
Loss of mucousal integrity causes fungal invasion and therefore venous infarction
What two things can cause verminous vasculitis?
Dirofilaria immitis and Angiostrongylus vasorum
(heartworm and French heartworm)
What is the intermediate host of A.vasorum?
Slugs and snails (gastropods)
What is the pathogenesis of verminous vasculitis?
- Infection with larvae
- replication and maturation of nematodes within the pulmonary arteries
- increases the afterload (resistance the heart must pump against)