What characterizes a diastolic murmur?

A diastolic murmur is characterized by the specific timing of the sound in relation to the cardiac cycle. Murmurs are abnormal sounds produced by turbulent blood flow within the heart or blood vessels, and they can occur during either systole or diastole. In the case of a diastolic murmur, the sound is specifically heard during the diastolic phase, which is when the heart's chambers are relaxed and filling with blood.

This timing is crucial because it distinguishes diastolic murmurs from systolic murmurs, which occur when the heart is actively contracting and pumping blood. The identification of a murmur as diastolic provides valuable information about the functioning of the heart and the presence of potential underlying conditions, such as valvular heart disease.

Understanding the nature of diastolic murmurs is important for medical professionals, as it can guide further evaluation and management of patients with cardiac concerns.