Heart Sounds | S1 S2 S3 S4 and Murmurs Nursing Assessment

Heart sounds (S1, S2, S3, S4, murmurs) for nursing assessment examination. This video details the anatomy of the heart, heart sound auscultation points (sites), blood flow, diastole, systole, tips for distinguishing S1 from S2, and how to use the diaphragm and bell of the stethoscope when listening the atrioventricular (AV) and semilunar (SL) valve closure, such as the aortic, pulmonic (S2 sounds), tricuspid, and mitral valves (S1 sounds) and the extra heart sounds such as S3, S4, and murmurs. In addition, I talk about patient positioning to obtain the best acoustic sounds for heart sounds that includes sitting-up/supine, left side placement, and sitting-up, leaning forward. In the next video, I will perform a cardiac assessment of the heart by demonstrating how to place the stethoscope’s chest piece to listen to heart sounds.

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Heart sounds are the sounds produced by the heart during its normal functioning. These sounds can be heard through a stethoscope and are indicative of the health of the heart. Heart sounds are classified into two types: normal heart sounds and abnormal heart sounds.

Normal heart sounds are the sounds produced by the heart during its normal functioning. These sounds are divided into two sounds: S1 and S2. S1 is produced when the mitral and tricuspid valves close, while S2 is produced when the aortic and pulmonary valves close.

Abnormal heart sounds, also known as murmurs, occur when there is turbulence or abnormal blood flow through the heart. Murmurs can be caused by a variety of factors, such as a defective valve, an abnormality in the heart’s structure, or a blockage in a blood vessel.

In addition to S1, S2, and murmurs, there are also S3 and S4 heart sounds. S3 is an extra heart sound that occurs when blood flows into a relaxed ventricle. S4, on the other hand, is an extra heart sound that occurs when the atria contract and push blood into a non-compliant ventricle.

Nursing assessment of heart sounds is an important part of patient care. Nurses can use a stethoscope to listen to heart sounds and identify any abnormalities or changes in heart function. They can also monitor changes in heart sounds over time and make appropriate interventions to improve heart health, such as medication management or lifestyle changes. Overall, understanding heart sounds and murmurs is fundamental to providing high-quality nursing care to patients with cardiovascular disease.


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