How do we determine our heart rate using the EKG sensor? - PowerPoint PPT Presentation

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How do we determine our heart rate using the EKG sensor?

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Title: How do we determine our Heart Rate Author: Polytechnic University Created Date: 11/29/2004 2:15:13 AM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Title: How do we determine our heart rate using the EKG sensor?


1
How do we determine our heart rate using the EKG
sensor?


2
Instructional Objectives
  • Background Information on EKG
  • Methods of Measuring Heart Rate
  • Experimental Setup

3
What is an EKG?
  • Electrocardiogram (EKG) - An instrument used in
    the detection and diagnosis of heart
    abnormalities.
  • It measures electrical potentials on the body
    surface and generates a record of the electrical
    currents associated with heart muscle activity.
  • By analyzing the EKG, damage to a specific region
    of the heart can be detected.

4
Experimental EKG Data
5
Calculating Your Heart Rate
6
Measuring Heart Rate Without Instrumentation
  • Heart rate can be determined by measuring pulse
    rate.
  • The pulse rate is the rate at which a series of
    pressure waves travel within an artery.
  • Each time blood surges from the aorta, the
    elastic walls of blood vessels expand and
    stretch, causing a pulse.

7
Measuring Heart Rate With Instrumentation
  • Use the EKG sensor to graph your hearts
    electrical activity.
  • Place three electrode patches on your arms as
    shown in the diagram.
  • Connect the alligator clips from the sensors to
    the tabs of the electrode patches.
  • Collect data with the LoggerPro.
  • Calculate heart rate by determining the time
    interval between the R waves on the EKG graph.

8
Experimental Setup
Student
EKG sensor
LoggerPro
Computer
9
Discussion Questions
  • Average Heart Rate
  • 70-90 beats/min
  • Maximum Heart Rate
  • 220 beats/min Individuals Age
  • Comparison of experimental findings versus
    theoretical data
  • Causes for discrepancies
  • Factors not taken into account during experiment
  • Age
  • Weight
  • Health Condition
  • Gender

10
  • LAB TIME!!!
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