Difference between revisions of "Category:Endocardial Pathology"
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Because of its close association with the blood, endocardium is particularly at risk of trauma and haematogenous infection. | Because of its close association with the blood, endocardium is particularly at risk of trauma and haematogenous infection. | ||
| − | Valvular disease is very rare in the cat | + | Valvular disease is very rare in the cat. |
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| − | ==Vascular Pathology== | + | ==[[:Category:Cardiovascular System - Vascular Pathology]]== |
| − | ===Haemorrhage=== | + | ===[[Endocardial Haemorrhage]]=== |
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===Atrial thrombosis=== | ===Atrial thrombosis=== | ||
Revision as of 12:41, 23 June 2010
The endocardium is a smooth layer continuous with the lining of the blood vessels. The endocardium also provides the structure to the valve leaflets. Because of its close association with the blood, endocardium is particularly at risk of trauma and haematogenous infection.
Valvular disease is very rare in the cat.
Inflammatory-Endocarditis
Category:Cardiovascular System - Vascular Pathology
Endocardial Haemorrhage
Atrial thrombosis
Atrial dilation or fibrillation on dogs and cats allows abnormal eddying and stasis of blood within the atria. Thrombosis may occur with subsequent embolisation of thrombus and lodging in smaller vessels. This particularly occurs in the cat where thrombi lodge in the femoral artery. The platelets within the thrombus release vasoactive amines which potentiate the hypoxia by constricting collateral circulation to the hindlimb. The cat will present with an acute hind limb paralysis with the limbs affected being cold to the touch and without a femoral pulse.
Embolism elsewhere is usually clinically silent.
Blood cysts
Haematoma formation within the AV-valve leaflets.
Proliferative Pathology
Haemangioendothelioma
Arise from the endothelial cells, usually of the right atrium and occasionally involving the right ventricle.
Often multiple with similar tumours in the spleen.
Chemodectoma
Tumour arising from the chemoreceptor cells of the aortic body. Usually benign although local enlargement causes clinical signs early on E.g. dyspnoea.
The heart is also a site of secondary neoplasia, particularly mammary and thyroid adenocarcinomas and haemangiosarcomas.
Pages in category "Endocardial Pathology"
The following 10 pages are in this category, out of 10 total.