atrial gallop -->
presystolic gallop
medical dictionary

Gallop rhythm in which the gallop sound follows atrial systole in late diastole and is an audible fourth heart sound due to forceful ventricular filling.

Synonyms: atrial gallop.

Protodiastolic gallop, gallop rhythm in which the gallop sound occurs in early diastole and is an abnormal third heart sound.

(05 Mar 2000)