Medically reviewed by Jeffrey S. Lander, MD Key Takeaways S1 and S2 are the normal heart sounds you hear when the heart ...

Heart sounds are produced from a specific cardiac event such as closure of a valve or tensing of a chordae tendineae. Many pathologic cardiac conditions can be diagnosed by auscultation of the heart ...

Murmurs are characterized by their grade, pitch, timing in the cardiac cycle, change in intensity, quality, location heard best, and radiation. Systolic murmurs. Almost all systolic murmurs begin in ...

S1 is the first heart sound that doctors can hear using a stethoscope. The vibrations that occur when the mitral and tricuspid valves in the heart close produce the S1 sound. There are two common ...

Blood flows through the heart and generates noises known as heart sounds. These noises occur due to heart valves opening and closing as the heart pumps blood. A doctor can gain valuable information by ...

The second heart sound (S2) is produced by the closure of the aortic and pulmonic valves. The sound produced by the closure of the aortic valve is termed A2, and the sound produced by the closure of ...

IT IS possible that the existence of the heart sounds was known to Hippocrates 1 and even that he made use of his knowledge for diagnostic purposes, but William Harvey 2 seems to have been the first ...