cardiomyopathy Flashcards

(54 cards)

1
Q

group of diseases of the myocardium associated with cardiac dysfunction

A

cardiomyopathy

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2
Q

main types of cardiomyopathy

A
  1. dilated cardiomyopathy
  2. stress cardiomyopathy
  3. hypertrophic cardiomyopathy
  4. restrictive cardiomyopathy
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3
Q

dilated cardiomyopathy

A

systolic (pumping) problem, and dilated baggy ventricles
impaired contraction of one or both ventricles

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4
Q

reduced ejection fraction is less than ___

A

40%

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5
Q

most common etiologys of dilated cardiomyopathy

A

idiopathic,,most common

infectious myocarditis, coxsakie b
toxic causes; etoh, cocaine,
b1 deficiency
doxorubicin

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6
Q

dilated cardiomyopathy best test

A

echo
echo shows left ventrciular dilation, decreased ef <40%

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7
Q

clinical presentastion. of dilated cardiomyopathy

A

heart failure

left heart failure signs include, orthopnea,
right heart failure signs include, jvd, peripheral edema

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8
Q

lab tests in dilated cardiomyopathy

A

serum BNP, usually elevated
helpful to determine prognosis, and severity

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9
Q

physical exam for dilated cardiomyopathy will show an ___ gallop rhythm,

A

s3
peripheral edema, acites, jvd, crackles

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10
Q

pt comes in with complaints of diffculty breathing when walking, you note tachycardia on monitor, and in listeing to lungs you hear crackles, and see pedal edema, you decide to order an echo and you see left ventricular dilation and reduced ef at 35%. (1) what do you suspect? and (2) how will you treat this pt?

A

dilated cardiomyopathy, will tx using a combination of meds including

beta blocker, to reduce contractility (metoprolol)
ARNI- sacubitril-valsartan or ACE (pril)
spironolactione
diuretic, furosemide

also control contributin f factors

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11
Q

pt with dilated cardiomyopathy when to admit

A

with hypoxia, fluid overload, or pulmonary edema, that is not fixed in an outpt setting

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12
Q

stress cardiomyopathy is characeterized by a transient -______ dysfunction of the left ventricle, myocardial infarction, but is in _______of coronary artery diseas or in a plque rupture

A

systolic
absense

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13
Q

stress cardiomyopathy is also called _________ and ______

A

broken heart syndrome

and takomondo (octopus)

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14
Q

stress cardiomyopathy occurs after a major______ surge

A

catecholamine

(epinephrine and norepinephrine)

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15
Q

ecg in stress cardiomyopathy will show

A

st elevations similar to st elevation in mi

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16
Q

what other lab work is elevated in stress cardiomyopathy

A

cardiac enzymes, and bnp

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17
Q

what lab diagnostic is required in stress cardiomyopathy to exclude acute coronary syndrome due to similar symptoms

A

coronary angiography, needs to shows absense of a plaque ruptue or obstructive coronary disease

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18
Q

stress cardiomyopathy symptoms

A

acute substernal chest pain
dyspnea
syncope

frequently, a recent intense emotional or physcial stress, death of a loved one,

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19
Q

______ performed after acute coronary syndrome is ruled out via coronary angiography absense of plaque rupture or obstructive coronary disease in stress cardiomyopathy

A

echocardiogram

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20
Q

echocardiogram for stress cardiomyopathy (takotsubo syndrome) shows

A

transient systolic dysfunction
apical left ventricle ballooning

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21
Q

initial tx for stress cardiomyopathy

A

aspirin, nitroglycerin, beta blocker, heparin, pt comes in and appears like a heart attack

conservative and supportive care, is the mainstay treatment in most patients

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22
Q

a 80 year old pt with a recent loss of her husband complaint pf substernal chest pain, dyspnea, ecg highlights st elevations, and cardiac enzymes elevated troponin and bnp are elevated, what other diagnostic test will you perform

A

coronary angiograpohy, (CTA) first
if absense of plaque rupture then echo,
shows transient systolic dysfunction and left ventricle ballooning

23
Q

stress cardiomyopathy is a type of _____ cardiomyopathy

24
Q

who does stress cardiomyopathy predominantly affect

A

post menopausal women

25
hypertrophic cardiomyopathy characterized by
increase in left ventricular wall thickness >15 mm on ECHO mutation in cardiac sarcomere genes
26
hypertrophic cardiomyopathy most common cause of ____-
sudden cardiac death
27
hypertrophy cardiomyopathy results in _____ dysfunction
diastolic dysfunction
28
sudden cardiac arrest can occur in which cardiomyopathy
hypertrophic cardiomyopathy usually in adolescent, children, times of extreme exertion
29
physical exam hypertrophic cardiomyopathy
harsh crescendo descrescendo systolic murmur., instensifiys with decreased venous return, from squat to stand decreases murmur with increased venous return mvp hates conforming to rules mitral valve prolapse, hypertrophic cardiomyopathy, increased murmur with decrease venous loud s4
30
echo for hypertrophic cardiomyopathy will demonstrate
hypertrophy of ventricle wall, esp septal LV wall thickness >15 mm
31
ecg for hypertrophic cardiomyopathy shows
left ventricular hypertrophy pseudo q waves
32
treatment for hypertrophic cardiomyopathy is
first line is beta blockers verapamil or diltiazem are alternatives if first line fails try disopyramide surgical: myomectomy in young pts refractory to medical treatment risk for sudden cardiac death, implantable defibrillator
33
what should be avoided in hypertrophic cardiomyopathy
digoxin, extreme exertion, alcohol nsaid, diuretic
34
restrictive cardiomyopathy
chambers become stiff and rigud, do not cause wall thickening, resulting in diastolic (filling problem) dysfunction
35
etiology for restrictive cardiomyopathy
amyloidosis (Mc) hemochromatosis sarcoidosis, "AMY has restrictvie sarcoidosis amy= amyloidosis has (hemochromatosis, amyloidosis, sarcoidosis)
36
amyloidosis is what? how is it confirmed ? and how does it present?
abnormal protein build up in body, confirmed by endomyocardial biopsy other signs include macroglossia, periorbital purpura hepatomegaly
37
restrictive cardiomyopathy symptoms
heart failure left sided hf, lungs, orthopnea, dyspnea on exertion right sided hf, jvd, peripheral edema
38
restrictive cardiomyopathy exam
kussmauls sign, increase in jvp, jugular venous pressure with inspiration
39
echo for restrictive cardiomyopathy will show
diastolic dysfunction preserved systolic disfunction bi atrial enlargement
40
main differential for restrictive cardiomyopathy is
constrictive pericaerditis, how to differentiate both have heart failure, with normal systolic, but abnormal filling features that favor rcm, elevated bnp, cardiomegaly, audible s3 features that favor constrictive pericarditis - pericardial knock on exam - endomyocardial biopsy if unclear
41
tx for restrive cardiomyopathy
tx underlying disorder amyloidosis, loop diuretics, (furosemide) tx symptoms of heart failure, general diuresis
42
what to avoid with restrictive cardiomyopathy
digoxin
43
hypertrophy cardiomyopathy most commonlly seen in
young/adolescent
44
hypertrophy cardiomyopathy is most common cause of ______ in young adults/adolescents
sudden cardiac death
45
a 23 year old patient presents after playing football and passed out, dagger q waves are present on ekg, and left axis deviation, long qrs, you seen left ventricular hypertrophy, you hear harsh creschendo-decreschendo systolic murmur, which increases when patient goes from squat to standing (decrease venous return standing to lying down and leg raise, murmur is decreased with increased venous return pulsus bisfereine, 2 upstrokes of pulse on echo you note ventricular wall thickness greater at 20 mm, what do you suspect, and how do u treat?
hypertophic cardiomyopathy beta blocker first, slows, heart rate allows for filling verapamil, or diltiazem, if cannot take beta blocke disopyramide, if cant do other two myomectomy, counseling - avoid dehydration avoid alcohol avoid digoxin, avoid extreme exercise (mild-mod exercise is ok) cardiologist
46
with hypertrophy cardiomyopathy need to assess for ______
risks of sudden cardiac death, may need ICD
47
risk for sudden cardiac death from hypertrophy cardiomyopathy
left ventricular hypertrophy >30 mm sudden cardiac death in a family member unexplained syncope
48
left axis devition shows qrs is ___ in lead 1
down
49
hypertrophy cardiomyopathy
dagger q waves left axis, lead 1 qrs down. large qrs complexes
50
hypertrophy cardiomyopathy tests
genetic test ekg echo**
51
hypertrophy cardiomyopathy results in ____ dysfunction due to _____
diastolic thickening of the ventricle
52
with echocardiogram in suspected restrictive cardiomyopathy u see, bright speckled myocardium what do u suspect is the cause in restrictive cardiomyopathy
amyloidosis
53
restrive cardiomyopathy must be differentiated from ____ pericarditis
constrictive
54
for RCM vs constrictive pericarditis, -
restrictive cardiomyopathy (rcm): audible s3, elevated BNP pericarditis, pericardial knock,