An<unk>  is an invasive heart procedure that is performed to obtain a small piece of myocardial tissue for pathologic evaluation.<unk>  remains the gold standard test to evaluate for the presence of and to subclassify the type of myocarditis.  A small tissue sample of the endocardium and myocardium is obtained via right sided cardiac catheterization. The sample is then evaluated by a pathologist using immunochemistry and special staining techniques as necessary.  Histopathological features include abundant edema in the myocardial interstitium and an inflammatory infiltrate which is rich in lymphocytes and macrophages.  Focal destruction of myocytes as a result of the inflammatory process results in left ventricular dysfunction.<unk>  is recommended when the results would identify an underlying disease that is amenable to therapy.  Routine performance of<unk>  is not recommended in all patients with myocarditis.
Endomyocardial biopsy
Coronary artery calcium scoring
Quantitative coronary angiography
Noncompaction cardiomyopathy biopsy
Noncompaction cardiomyopathy genetic testing
Dilated cardiomyopathy genetic testing
Doppler echocardiography
Coronary angiography