Which of the following is a common cause of restrictive cardiomyopathy?

Study for the PANCE Cardiology Test. Enhance your knowledge with comprehensive flashcards and multiple-choice questions. Each question comes with hints and detailed explanations. Prepare thoroughly for your exam!

Multiple Choice

Which of the following is a common cause of restrictive cardiomyopathy?

Restrictive cardiomyopathy shows stiff ventricles that don’t fill well during diastole, so diastolic dysfunction with preserved systolic function is the key feature. The most common cause is amyloidosis, in which abnormal proteins deposit in the myocardium and stiffen the ventricular walls. This deposition can affect both sides of the heart and often presents with signs of heart failure with preserved ejection fraction, sometimes with low voltage on the ECG despite apparent ventricular thickening on imaging. Other listed conditions involve different disease processes. Hypertrophic cardiomyopathy causes thickened walls with potential outflow obstruction, not primarily a filling problem. Dilated cardiomyopathy features dilation and systolic failure, not diastolic stiffness. Sarcoidosis can cause restrictive physiology but is less common than amyloidosis. So, amyloidosis best explains a common cause of restrictive physiology among these options.

Restrictive cardiomyopathy shows stiff ventricles that don’t fill well during diastole, so diastolic dysfunction with preserved systolic function is the key feature. The most common cause is amyloidosis, in which abnormal proteins deposit in the myocardium and stiffen the ventricular walls. This deposition can affect both sides of the heart and often presents with signs of heart failure with preserved ejection fraction, sometimes with low voltage on the ECG despite apparent ventricular thickening on imaging.

Other listed conditions involve different disease processes. Hypertrophic cardiomyopathy causes thickened walls with potential outflow obstruction, not primarily a filling problem. Dilated cardiomyopathy features dilation and systolic failure, not diastolic stiffness. Sarcoidosis can cause restrictive physiology but is less common than amyloidosis. So, amyloidosis best explains a common cause of restrictive physiology among these options.

More practice questions