See Also: fourth heart sound(medicine)
second heart sound(medicine)
third heart sound(medicine)
first heart sound(medicine)
FOURTH WARD Credit Union(finance)
RED CROWN Credit Union(finance)
WHITE CROWN Credit Union(finance)
FINANCE CENTER Credit Union(finance)
PUGET SOUND REFINERY Credit Union(finance)
HEART O' TEXAS Credit Union(finance)

RED CROWN Credit Union (finance) and fourth heart sound (medicine)


RED CROWN Credit Union (finance)


RED CROWN is a credit union with head office in TULSA, OK





fourth heart sound (medicine)


fourth heart sound


The sound produced in late diastole in association with ventricular filling due to atrial systole and related to reduced ventricular compliance. It is a low frequency oscillation that may be normal at older ages owing to a physiologic decline in ventricular compliance but is nearly always abnormal at younger ages if it is of high intensity or palpable. It is common in ventricular hypertrophy, particularly with hypertension, and is almost invariable during acute myocardial infarction. Fourth heart sounds may arise from the right or left ventricle or both.

Synonym: atrial sound.