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L17 Heart Sounds

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BSL Heart Sounds Lesson

In this BSL Heart Sounds Lesson, students listen to their own heart sounds by positioning the SS30L Stethoscope* over the aortic semilunar, pulmonic semilunar, tricuspid, and mitral (bicuspid) valves. They will distinguish the volume, pitch and duration of the sound at each point and determine the point where sounds are best heard, which will be used as the recording point for the heart sounds.

Students will also record Lead II ECG and compare the mechanical events (heart sounds) with the electrical events (ECG) of the cardiac cycle.

* BSL 4.0.2 and above includes a headphone output option for monitoring stethoscope sounds through OUT1/OUT1A/40HP via the MP Analog Output or headphone jack.

Experimental Objectives

  1. To listen to human heart sounds and describe them as to loudness, pitch, and duration.
  2. To correlate heart sounds with the mechanical events of the cardiac cycle.

Tasks Performed by the Student

BSL Lessons are designed to allow at least four students to record and save data in a normal lab period (60-90 minutes). Typically, labs work most efficiently with three or more students working together at each BSL station.

 

Videos

BSL 4 L17 Heart Sounds - Electrical & Mechanical Events

Biopac Student Lab Student Download

Lesson Hardware

This lesson requires a Biopac Student Lab (BSL) System and the following hardware. If your BSL System does not include all hardware items, expand your system by selecting required items below. For more details, review the Lesson: L# BSL Lessons - see the Lab Manual or launch BSL; A# and H# BSL PRO Lessons, click the PDF link above to review full setup, recording, and analysis procedures.

Item Name Cart
Select Option Stethoscope for BSL Add to Cart
SS2LB Lead set, shielded, BSL Add to Cart
EL503 Disp. Gen-purp electrode 100/pk Add to Cart
GEL1 Electrode gel 50 g Add to Cart
ELPAD Abrasive Pads 10/pk Add to Cart
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