What does a gallop sound indicate in the heart?

A gallop sound is an audible extra heart sound detected during the cardiac cycle and is characterized by a pattern that resembles the rhythm of a galloping horse. This sound can be due to the presence of either a third heart sound (S3) or a fourth heart sound (S4), which can indicate specific pathological conditions.

The presence of a gallop may signify heart failure, volume overload, or stiffness of the left ventricle, making the identification of this sound critical in clinical assessments. It typically suggests that the heart is under stress or not functioning efficiently, leading to fluid build-up or other issues. Recognizing this distinctive sound helps healthcare professionals determine appropriate diagnostic and therapeutic strategies based on the underlying condition it suggests.