Pathology of the Heart Part 2 Flashcards
does dilated cardiomyopathy cause systolic or diastolic dysfunction?
primarily systolic
some diastolic dysfunction
what is restrictive cardiomyopathy?
severe and extensive or patchy fibrous thickening of the endocardium
what are the classifications of myocarditis?
suppurative
lymphocytic/lymphoplasmacytic
eosinophilic
granulomatous
pyogranulomatous
hemorrhagic
what can directly effect cardiac myocytes and cause cardiac hypertrophy?
hyperthyroidism
what can cause protozoal myocarditis?
Trypanosoma cruzi
Toxoplasma gondii
Sarcocystis spp
Neospoea caninum
Encephalitozoan cuniculi
what does the myocardium look like with fungal myocarditis?
extensively pale tan
what are some parasites that cause myocarditis in sheep?
Taenia spp
Trichinella spp
what are some metastatic causes of cardiac neoplasia?
lymphoma
melanoma
carcinoma
what are some primary causes of cardiac neoplasia?
hemangiosarcoma
rhabdomyoma
rhabdomyosarcoma
myxoma
schwannoma/neurofibroma
chemodectoma
what is lymphoma in cattle often associated with?
bovine leukosis virus infection
how can you tell there is metastatic neoplasia, not primary neoplasia, in the heart?
multiple, separate nodules
what are some causes of cardiomyopathies (secondary)?
heritable
nutritional
toxic
physical injury/shock
endocrine
infectious
neoplasia
what do the fibers look like with dilated cardiomyopathy?
attenuated, wavy myofibers
atrophy
interstitial fibrosis
what does dilated cardiomyopathy look like grossly?
ventricular dilation
globoid appearance
rounded apex
collapse of ventricles
what is usually impacted by restrictive cardiomyopathy?
left ventricle usually
enlarged left atrium
