Cardiomyopathies Flashcards Preview

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Flashcards in Cardiomyopathies Deck (17):
1

Dilated CM = ___ dysfunction

Systolic
Ventricular dilation --> dilated, weak heart

2

Diastolic dysfunction w/ preserved contractility

Restrictive cardiomyopathy

3

Diastolic dysfunction d/t impaired ventricular relaxation/filling

Hypertrophic CM

4

Subaortic outflow obstruction d/t hypertrophic septum

Hypertrophic CM

5

Systolic anterior motion of mitral valve in ___ CM
Increases w/ (increased/decreased) contractility and (increased/decreased) LV volume

Hypertrophic

Increases w/ INCREASED contractility (exertion) and DECREASED LV volume (dehydration)

6

Alcoholics

Dilated CM

7

MC cause of restrictive CM

amyloidosis

8

Etiology of hypertrophic CM

inherited genetic d/o

9

Viral myocarditis causes ___CM
MC pathogen:

Dilated CM
Enteroviruses (Coxsackie B, echovirus)
Also: Parvovirus B-19, Chagas, HIV

10

(Right/left) sided failure more common than (right/left) sided failure in restrictive CM

Right MC than Left

11

Harsh systolic cres-decresc murmur @ LUSB like in AS (with/without) carotid radiation

Hypertrophic CM
NO carotid radiation

12

Ventricles nondilated w/ normal wall thickness

Restrictive CM

13

Marked dilation of both atria

Restrictive CM

14

Tx of dilated cardiomyopathy

Systolic HF tx: ACEI, diuretics, digoxin, BB, Na-restriction

15

Tx of restrictive CM

None
Tx underlying cause

16

Tx of hypertrophic CM

Caution w/ what medications?

1. BB*, verapamil, disopyramide
Sx: myomectomy, ETOH ablation

CAUTION w/ digoxin (increases contractility), nitrates, diuretics (decreases volume)

17

What medication should be avoided in Hypertrophic Obstructive Cardiomyopathy?

Nifedipine
d/t peripheral vasodilator properties --> increase left ventricular outflow obstruction