It is the first heart sound and is the "lubb" sound in lubb-dupp. The S1 sound is made when the mitral and tricuspid valves close, preventing blood from backflowing into the atria. The diastolic ...

Location: The location of the heart sound can help determine the etiology. The standard listening posts (aortic, pulmonic, tricuspid and mitral) apply to both heart sounds and murmurs. For example ...

Sometimes, if the doctor can hear the third and fourth sounds, it may indicate a potential problem with heart function. Vibrations from closing the two valves known as the mitral and tricuspid ...

The valves close to create a tight seal, preventing blood from flowing backward through the heart. S1 reflects the closing of ...

On the clinical side, White, 27 in his well known textbook on diseases of the heart, says, "the first sound, loudest at the apex, is produced by closure of the mitral and tricuspid valves ...

People with tricuspid regurgitation often have a heart murmur. A heart murmur is a whooshing sound that your provider can hear when they listen to your heart with a stethoscope. An echocardiogram is ...