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S04 ECG 2

ECG 2 explains Einthoven’s triangle. Students record Leads I and III while performing a number of tasks designed to change the rhythm of the heart. They then analyze the data and estimate the mean QRS axis and potential.

Experimental Objectives

  1. To record ECG from Leads I and III in the following conditions: lying down, sitting up, and breathing deeply while sitting.
  2. To compare the direction of the QRS complex (+ or -) with the direction of the lead axis.
  3. To estimate the mean ventricular potential.
  4. To estimate the mean electrical axis of the QRS complex.

Tasks Performed by the Student

Videos

Biopac Student Lab Student Download

Student Prep & Distance Learning

Click the link(s) below for sample data and/or lesson procedure video(s), BSL PRO Lesson procedures (PDF) for human lessons*, and graph template files (*.gtl) for BSL PRO Lessons. If more than one .gtl is available, download the .gtl with the _suffix to match BSL version and hardware.

Lesson Hardware

This lesson requires a Biopac Science Lab (MP40) System and the following hardware. If your BScL System does not include all hardware items, expand your system by selecting required items below.

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