22. Cardiomyopathy & Myocarditis Flashcards
Acute myocarditis is most commonly seen in _____ of children and young adults.
viral infections
Acute myocarditis is most commonly seen in viral infections of _____.
children and young adults
About 50% of acute myocarditis pts report having a viral URI about ____ prior.
2 weeks
What are the common presentations of acute myocarditis?
- fever
- chest pain w/ ECG changes
- arrhythmia
- HF
What is cardiac remodling?
change in the shape and function of a ventricle
Describe dilated cardiomyopathy.
enlarged ventricle that is more massive and has a more rounded shape; always involves the LV but usually is all 4 chambers
Describe hypertrophic cardiomyopathy.
a genetically inherited form; LV is hypertrophied but not dilated; usually disproportionate hypertrophy of the septum
What is restrictive cardiomyopathy?
infiltration or fibrosis of the ventricles, usually without dilatation
How does dilated cardiomyopathy present?
HF with a large silent heart with impaired systolic function
What causes dilated cardiomyopathy?
it's usually idiopathic but can be caused by: ischemia viruses genetics chemotherapy ethanol cocaine hemochromatosis muscular dystrophy peripartum cardiomyopathy
When does peripartum cardiomyopathy present?
in the last trimester of pregnancy up until 5 months post-partum
Echocardiograms often demonstrate _____ and are very useful in confirming that a myocardial process is present.
global or diffuse ventricular dysfunction
For dilated cardiomyopathy, clinically a distinction is often made between “____,” due to coronary artery disease and “_____” dilated cardiomyopathy.
ischemic; nonischemic
What virus is the most common cause of viral myocarditis?
Coxsackie B virus
Myocarditis is often an ____ condition.
autoimmune
