Explain cardiac examination auscultation and its techniques, Biology

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Explain cardiac examination auscultation and its techniques?

Auscultation of the heart sound and associatcd sound is very important to diagnose the cardiovascular diseases. It has to be carried cut meticulously.

Technique :  Stethoscope: It is an airtight instrument with metal tubing joined to single flexible 12" long rubber tubing with internal diameter of 118" and with dual chest pieces; a bell and a diaphragm. Too long tubing attenuates high frequencies, low frequencies are unaffected by tube length. Bell is used for auscultating low frequencies by applying tightly enough to achieve a skin seal. Diaphragm is used to damp out low frequencies 24 and is best for high frequency events.

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Figure: Areas of ausculation


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