Cardiomyopathy & Myocarditis Flashcards Preview

CVPR Unit 1 > Cardiomyopathy & Myocarditis > Flashcards

Flashcards in Cardiomyopathy & Myocarditis Deck (22):
1

What is acute myocarditis?

Acute inflammation of the cardiac muscle that is usually viral in etiology.
• May be focal or diffuse• Often seen in relatively young adults and children
• 50% have preceding respiratory or GI symptoms

2

common presentation of acute myocarditis

– Fever
– CP w/ ECG changes
– Arrhythmia
– Heart failure

3

complications of myocarditis

Low ejection fraction and heart failure have high mortality but some recover and others develop a chronic dilated cardiomyopathy

4

etiology of dilated cardiomyopathies

Usually idiopathic Genetic
Viral
Ischemic
Other

5

presentation

Heart failure with a large silent heart with impaired systolic function

6

CXR in dilated cardiomyopathies

Enlarged Heart
Congested Lung fields

7

What are the clinical manifestation of dilated cardiomyopathies?

-HF
-Arrhythmia
-Thromboemolism

8

Effect of angiotensin binding to AT1

Vasoconstriction
Increased aldosterone release Sodium Retention
Fibrosis
Increased Sympathetic Activity Hypertrophy

9

Tx of dilated cardiomyopathies

TREATMENT OF HEART FAILURE
ANTICOAGULATION
ANTI-ARRHYTHMIC AGENTS
ANTI-INFLAMMATORY / IMMUNO-SUPPRESSIVE

10

do you see diastolic or systolic dysfunction in HYPERTROPHIC CARDIOMYOPATHY WITHOUT AORTIC OUTFLOW OBSTRUCTION?

Diastolic dysfunction due to impaired diastolic relaxation & increased stiffness

11

What is the usual Sx seen w/ HYPERTROPHIC CARDIOMYOPATHY WITHOUT AORTIC OUTFLOW OBSTRUCTION?

Dyspnea on exertion

12

What causes increased pulmonary venous & capillary pressures in hypertrophic cardiomyopathy w/out aortic outflow obstruction?

Elevated LV diastolic pressure

13

HYPERTROPHIC OBSTRUCTIVE CARDIOMYOPATHy

Asymmetric myocardial hypertrophy
Diastolic dysfunction
Enhanced systolic dysfunction
Dynamic left ventricular outflow obstruction

14

Pt w/ hypertrophic obstructive cardiomyopathy have a Propensity for what?

syncope & sudden death

15

What is seen w/ hypertrophic obstructive cardiomyopathy ?

Systolic Anterior Motion of Mitral Valve

16

what are the clinical manifestations of hypertrophic obstructive cardiomyopathies?

DYSPNEA
ANGINA
Hypertrophic LV
SUDDEN DEATH
Variable: Asymptomatic to severe symptoms

17

hypertrophic obstructive cardiomyopathy Tx

• Avoidcompetitivesportsandotherextreme exertion
• Decreasecontractility–Betablockers/Verapamil
• SurgicalmyomectomyorAlcoholablation
• AutomaticImplantableCardiacDefibrillator

18

RESTRICTIVE CARDIOMYOPATHY most common infiltrative

amyloidosis, sarcoidosis

19

Ventricular filling in restrictive cardiomyopathy

Impaired ventricular filling due to stiff (noncompliant) ventricles

20

T or F: Systolic function often normal
and ventricles usually not dilated ins restrictive cardiomyopathy

True

21

How are sarcomeres added in concentric hypertrophy?

in parallel

22

How are sarcomeres added in eccentric hypertrophy?

in series