Exercise Physiology Ecg Lab

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Exercise Electrocardiogram Lab
Purpose
The purpose of this lab is to understand the concepts of an electrocardiogram of a normal person as well as understand what a normal ECG and an exercise ECG look like when performing a Bruce protocol treadmill test.

Methods

Materials- Test subject, ECG-12lead, 10 electrodes, treadmill

The subject must have the electrodes properly connected before starting the treadmill test. Remove any hair from the subject before placing the electrodes on. The bipolar limb leads will be placed on the torso for exercise testing. Place the right arm electrode just below the right clavicle, the left arm electrode just below the left clavicle, the right leg electrode (the ground lead) on the right side of the navel, and the left leg electrode on the left side of the navel. The six unipolar chest leads must be place in the following positions: V1 in the fourth intercostal space at the right sternal margin, V2 in the fourth space at the left sternal margin, V3 at the midpoint between V2 and V4, V4 at the 5th intercostal space at the left anterior axillary line, V5 in the 5th intercostal space at the left anterior axillary line, and V6 in the 5th intercostal space at the left mid-axillary line. Once the subject is properly connected to the ECG, the ECG will measure the subject at rest. The ECG will then measure the subject at various stages during the Bruce protocol test. This test starts at a pace of 1.7mph and at an incline of 10%. The subject will move onto the next stage after every three minutes. The incline will increase by 2% after each stage. The speed will increase by 0.8mph until stage 5. The speed will then only increase by 0.5mph every stage after stage 5. The test must end whenever any of the following occurs: a drop in systolic blood pressure of greater than 10mmHg with an increase workload, moderate-to-sever angina, perfusion problems, the subject’s desire to stop, technical difficulties with the ECG, sustained

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