Which diagnostic sign is associated with congestive heart failure?

The presence of an S3 heart sound is associated with congestive heart failure. This sound, often referred to as a "ventricular gallop," occurs shortly after the normal second heart sound (S2) during the rapid filling phase of the ventricles. In the context of heart failure, the S3 sound can indicate fluid overload and increased filling pressures in the heart. This is particularly common in conditions where the heart is unable to pump effectively, leading to a backlog of blood and congestion in the lungs and systemic circulation.

The S3 sound is especially relevant for providers to listen for in patients presenting with symptoms of heart failure, as it can provide valuable information about the hemodynamic status of the patient. Being able to recognize an S3 gallop can therefore be an important diagnostic tool for identifying the presence and severity of congestive heart failure.