It is the closure of the mitral and tricuspid valves that create the S1 heart sound.Īs blood leaves the ventricles, the pressure drops within the chamber. Likewise, the mitral valve is closed preventing regurgitation of blood from the left ventricle into the left atrium. During systole, the tricuspid valve is closed preventing regurgitation of blood from the right ventricle into the right atrium. Blood from the right ventricle travels through the pulmonic valve to the lungs, whereas blood from the left ventricle travels through the aortic valve to the body. Systole is the contraction that pushes blood from the ventricles. The cardiac cycle starts with the beginning of one heartbeat to the beginning of the next heartbeat. Each sound has different characteristics, including timing and intensity. When performing a cardiovascular assessment, auscultation of heart tones is an important component of the examination. Facing Ethical Challenges with Strength and Compassion.
#NORMAL HEARTBEAT SOUND PROFESSIONAL#
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