In medical terminology, the normal "lub dub" sounds of a heartbeat are labeled S1 and S2. Abnormal sounds that may be heard include S3, S4, rub, murmur, and snap.
ventricular fibrillation (v-fib)
The venous pressure increases during the second heart sound because of the increased negative pressure. 2nd heart sound heard when AV valves close,ventricular diastole
The sound is caused by the closing of valves in the heart.
Heart sounds originate from the closure of heart valves during the cardiac cycle. The first heart sound (S1) is produced by the closure of the mitral and tricuspid valves, while the second heart sound (S2) is caused by the closure of the aortic and pulmonary valves. These sounds can be heard using a stethoscope during a physical examination.
The valve sound heard at the base of the heart is primarily the aortic valve closure. This sound is best heard using the diaphragm of the stethoscope at the second right intercostal space along the sternal border. It represents the closing of the aortic valve as blood is ejected from the left ventricle into the aorta during systole.
S1 makes a "lub" sound. It is the first heart sound in a normal rhythm. The sound is produced when the AV valves close.
Does a heart make decibels? Never heard a heart.
heart murmur
Crepitus.Abnormal crackling sounds are called rales when heard on ausculation of the lungs, but called crepitus when heart in a joint, gangrenous skin, etc.
The crowd reacted with shock and fear when they heard the loud gunshot sound during the performance.
S1 which is the closing of the atrioventricular valves.
Murmur