Flashcards in Cardiomyopathies Deck (47)
Definition of Cardiomyopathy
Intrinsic disease of myocardium that causes hemodynamic dysfuction
-heart failure, L and/or R biventricular failure
What percentage of heart failure diagnosed in the US is cardiomyopathy?
The cause of Cardiomyopathy is usually __________ although it can be secondary to multi vessel disease.
T/F cardiomyopathy can be related to valve disease, and/or systemic HTN
What are the 2 categories of etiologies of cardiomyopathy?
What causes Primary intrinsic cardiomyopathy?
Genetic disorders of myocardial fibers
What causes secondary intrinsic cardiomyopathy?
What are the three main PATTERNS of cardiomyopathy?
Signs and symptoms of all cardiomyopathies
DOE (increased LV/LA/PA pressure)
Fatigue (decreased CO)
As disease advances so do symptoms
What is the most common type of cardiomyopathy?
Define dilated cardiomyopathy
enlarge LV with decreased systolic function and ejection fraction.
What must the ejection fraction be less than to consider dilated cardiomyopathy as diagnosis?
EF less than 50%
Epidemiology of dilated cardiomyopathy
Men more than women
Blacks more than whites
Age of onset 20-50
In dialated cardiomyopathy ______ failure is more pronounced than _______ failure
Systolic failure is more pronounced than diastolic failure
With dilated cardiomyopathy the heart can be enlarged _____ - _____ x normal weight
Causes of intrinsic dilated cardiomyopathy
RX's (ETOH, and chemo drugs)
Signs and symptoms of Dilated cardiomyopathy
S3 Gallop rhythm
Murmurs of mitral or tricuspid regurg. (systolic)
What symptoms are present in severe heart failure secondary to dilated cardiomyopathy?
Cheyne-stokes breathing -
What diagnostic studies can be used in workup for dilated cardiomyopathy?
What would you be looking for on Echo to confirm dil. Cmyop.
Presnence of dilated ventricle and reduced systolic function
EF less than 40%
What would you be looking for on ECG to confirm dil. Cmyop.
What would you be looking for on CXR to confirm dil. Cmyop.
L and or right heart enlargement
What 2 types of Hypertrophic Cardiomyopathies (HCM) exist?
What is age of onset of HCM
any age but commonly seen post-puberty
What is the most common genetic cause of cardiac death in young people including trained athletes?
Definition of HCM
Increased LV hypertrophy without the presence of an underlying cause such as valve dz, volume overload or systemic HTN.
What is the primary dysfunction of HCM
increased diastolic filling pressure from a stiff and small chambered hypertrophied LV
In obstructive HCM (there is outflow track obstruction) there is characteristic ________ that can obstruct outflow by narrowing the LV outflow track and decreasing EF.
asymmetric interventricular septal hypertrophy
Causes of intrinsic HCM
Genetic (50-80% of cases) MC genetic CV issue
IDMM (infants of diabetic mothers)