True or false: in restrictive cardiomyopathy, there is a diastolic dysfunction

True or false: in restrictive cardiomyopathy, there is a diastolic dysfunction

• A. True
• B. False
• C. Both diastolic and systolic dysfunction
• D. None

Answer: (A)

Restrictive cardiomyopathy presents with a stiff, noncompliant ventricle that fills abnormally during diastole. Because the ventricle cannot relax and expand effectively, diastolic filling is impaired, leading to diastolic dysfunction and elevated filling pressures. Systolic function is typically preserved early on, so ejection fraction remains normal despite symptoms of heart failure. This makes diastolic dysfunction the defining feature, so the statement is true. In later stages, some systolic dysfunction can emerge, but the hallmark remains diastolic dysfunction with preserved systolic function.

Restrictive cardiomyopathy presents with a stiff, noncompliant ventricle that fills abnormally during diastole. Because the ventricle cannot relax and expand effectively, diastolic filling is impaired, leading to diastolic dysfunction and elevated filling pressures. Systolic function is typically preserved early on, so ejection fraction remains normal despite symptoms of heart failure. This makes diastolic dysfunction the defining feature, so the statement is true. In later stages, some systolic dysfunction can emerge, but the hallmark remains diastolic dysfunction with preserved systolic function.