Vernier Software and Technology
Vernier Software & Technology

Analyzing the Heart with EKG

Introduction

An electrocardiogram (ECG or EKG) is a graphical recording of the electrical events occurring within the heart. In a healthy heart there is a natural pacemaker in the right atrium (the sinoatrial node) which initiates an electrical sequence. This impulse then passes down natural conduction pathways between the atria to the atrioventricular node and from there to both ventricles. The natural conduction pathways facilitate orderly spread of the impulse and coordinated contraction of first the atria and then the ventricles. The electrical journey creates unique deflections in the EKG that tell a story about heart function and health. Even more information is obtained by looking at the story from different angles, which is accomplished by placing electrodes in various positions on the chest and extremities. A positive deflection in an EKG tracing represents electrical activity moving toward the active lead (the green lead in this experiment).

Objectives

In this experiment, you will

  • Obtain graphical representation of the electrical activity of the heart over a period of time.
  • Learn to recognize the different wave forms seen in an EKG, and associate these wave forms with activity of the heart.
  • Determine the heart rate by determining the rate of individual wave forms in the EKG.
  • Compare wave forms generated by alternate EKG lead placements.

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Human Physiology with Vernier »

Human Physiology with Vernier

See other experiments from the lab book.

1Warming Function of Nasal Passageways
2Effect of Vascularity on Skin Temperature Recovery
3Heart Rate as a Vital Sign
4Heart Rate and Exercise
5Heart Rate Response to Baroreceptor Feedback
6Effect of Coughing on Heart Rate
7Blood Pressure as a Vital Sign
8Blood Pressure and Exercise
9Diurnal Blood Pressure Variation
10Heart Rate and Blood Pressure as Vital Signs
11Heart Rate, Blood Pressure, and Exercise
12Analyzing the Heart with EKG
13Introduction to EMG
14ANeuromuscular Reflexes (with Accelerometer)
14BNeuromuscular Reflexes (without Accelerometer)
15Muscle Function Analysis
16Grip Strength Comparison
17Grip Strength and Muscle Fatigue
18EMG and Muscle Fatigue
19Lung Volumes and Capacities
20Respiratory Response to Physiologic Challenges
21Analysis of Lung Function
22Oxygen and Aerobic Metabolism
23Oxygen Extraction by the Lungs
24Effect of "Dead Space" on Oxygen Exchange

Experiment 12 from Human Physiology with Vernier Lab Book

<i>Human Physiology with Vernier</i> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

Buy the Book

Dev Reference: VST0197

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