Cardiac Muscle Dysfunction and Congestive Heart Failure Flashcards
What is Congestive Heart Failure (CHF)?
A condition where the heart is unable to pump enough blood to meet the body’s needs.
What are the differences between right-sided and left-sided heart failure?
- Right-sided: fluid backs up into the system (legs, liver).
- Left-sided: fluid backs up into the lungs.
What are general symptoms of CHF?
- fluid retention,
- pulmonary congestion,
- shortness of breath
What is Cardiac Muscle Dysfunction (CMD)?
A condition where damage to the cardiac muscle leads to heart failure.
What are the causes of CMD?
- hypertension
- CAD (MI),
- cardiomyopathy,
- renal insufficiency
What are the symptoms of CMD?
- fluid overload,
- ventricular dysfunction,
- dyspnea
- fatigue
What causes CMD due to hypertension?
Increased systemic arterial pressure leads to left ventricular hypertrophy.
What is CMD due to CAD (MI)?
Injury results in dysfunction of the left or right ventricle, potentially leading to scarring.
What is CMD due to cardiac arrhythmias?
Abnormal rhythms impair the ventricles’ ability to function.
How are cardiac arrhythmias managed?
Usually managed with medications.
What are heart valve abnormalities?
Blocked or incompetent valves cause the heart to contract more forcefully, leading to myocardial hypertrophy.
What is CMD due to renal insufficiency?
Fluid overload due to impaired kidney function leads to CMD and heart failure.
What is CMD due to a pulmonary embolism?
Increased pulmonary artery pressures lead to increased right ventricular work.
What is CMD due to pulmonary hypertension?
High pressure in the pulmonary arteries increases right ventricular work.
What are the types of cardiomyopathy?
- dilated
- hypertrophic
- restrictive
What is dilated cardiomyopathy?
Ventricular dilation leads to impaired systolic function and a decrease in ejection fraction.
What are symptoms of dilated cardiomyopathy?
Dyspnea, fatigue, pulmonary congestion, palpitations.