gallop (redirected from gallops)

gallop /gal·lop/ (gal´op) a disordered rhythm of the heart; see also under rhythm.

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atrial gallop  S

diastolic gallop  S

presystolic gallop  S

S3 gallop  an accentuated third heart sound in patients with cardiac disease characterized by pathological alterations in ventricular filling in early diastole.

S4 gallop  an accentuated, audible fourth heart sound usually associated with cardiac disease, often that with altered ventricular compliance.

summation gallop  one in which the third and fourth sounds are superimposed, appearing as one loud sound; usually associated with cardiac disease.

ventricular gallop  S

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gal·lop (glp)

n.

A triple cadence to the heart sounds at rates of 100 beats per minute or more due to an abnormal third or fourth heart sound being heard in addition to the first and second sounds. Also called gallop rhythm.

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gallop

[gal′əp]

Etymology: Fr, galop

a third or fourth heart sound, which at certain heart rates sometimes sounds like the gait of a horse. Also called gallop rhythm. See also S₃, S₄, summation gallop.

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gallop

1. a disordered rhythm of the heart. See also gallop rhythm.

2. the horse's fastest gait. All four hooves are off the ground at the one time and the rhythm is one of four beats. The sequence of contact by the hooves is near hind, off hind, near fore, then off fore (when the off fore is the leading limb).

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diastolic gallop

see gallop rhythm.

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gallop

Cardiology Cardiac auscultatory phenomena cvharacterized by a tripling or quadrupling of heart sounds, likened to a horse's canter; gallops may be the first sign of cardiac disease, but are often unrecognized, misinterpreted or ignored; gallops occur in diastole, and separated by the phase in which they occur; ventricular–S3 or protodiastolic gallop follows normal 1^st and 2^nd heart sounds, occurs in early diastole coinciding with rapid ventricular filling, and causes high-pitched vibrations of the ventricular wall as the blood is abruptly stopped; it connotes serious heart disease or decompensation and is associated with coronary, hypertensive, rheumatic, and congenital cardiac disease; it may be normal in young adults; once diagnosed, the average ventricular 'galloper' survives 4-5 yrs; the atrial–S4 gallop occurs during presystole or atrial systole, and is typical of left ventricular hypertrophy or ischemia; if ventricular failure accompanies ventricular hypertrophy, an S3 gallop may also be heard; the S4 gallop may occur in absence of cardiac decompensation or in 1º myocardial disease, coronary artery disease, HTN, and severe valvular stenosis, accompanied by an ↑ P-Q interval; if the P-R interval is prolonged or the heart rate sufficiently rapid S3 and S4 merge resulting in a 'summation' gallop. See S₃ gallop, Summation gallop.