Nonischemic myocardial disease

Question 1

catecholamine induced cardiomyopathy

Answer 1

takotsubo/broken heart syndrome

ballooning of cardiac apex

Question 2

arrhythmogenic cardiomyopathy

Answer 2

arrhytmogenic right ventricular dysplasia; fibrofatty replacement of ventricular myocytes

may require ICD placement

Question 3

myocardial noncompation

Answer 3

developmental defect of LV; failure of part of left ventricle to form solid myocardium

Question 4

hypertrophic cardiomyopathy

Answer 4

AD cardiomyopathy

Question 5

idiopathic assymmetric septal hypertrophy

Answer 5

IHSS; variant of hypertrophic caridomyopathy&raquo_space; mitral regurg and left atrial enlargement

may cause LV outflow tract obstruction; wall thickness >15 mm and >1.5x size of lateral wall

wall thickness 30 mm is indication for ICD

Question 6

restrictive cardiomyopathy

Answer 6

small stiff thickened ventricles; dilated atria and IVC

may be due to sarcoidoisis, hemochromatosis, myocardial deposition disease (amyloidosis)

Question 7

dilated cardiomyopathy

Answer 7

concentric ventricular chamber enlargement; impaired systolic function

Question 8

lipomatous hypertrophy of interatrial septum

Answer 8

fatty proliferation typically along right heart border

do not mistake for cardiac mass; ddx is liposarcoma