BIOPAC® Systems, Inc. Logo

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.

ItemNameCart
Spotlight On

RSP Smart Amplifier

The RSP Respiration Smart Amplifier is specifically designed for recording signals from a respiration transducer for direct physical measurement of respiratory effort. The amp works with the transducer to measure abdominal or thoracic expansion and contraction while breathing and permits DC coupling for the recording of respiratory effort signals of arbitrarily low frequency. BIOPAC’s new Smart […]

View All
Latest News

New Citations | BIOPAC in HRV Analysis Research

BIOPAC provides researchers with a complete range of tools to gather data on heart rate variability (HRV). The following studies demonstrate just some of the ways in which HRV research benefits from the implementation of BIOPAC hardware and software solutions. PTSD and HRV Post-traumatic stress disorder (PTSD) has been associated with dysfunction of the autonomic […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration