Phlebotomy Essentials
6th Edition
ISBN:9781451194524
Author:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Publisher:Ruth McCall, Cathee M. Tankersley MT(ASCP)
Chapter1: Phlebotomy: Past And Present And The Healthcare Setting
Section: Chapter Questions
Problem 1SRQ
Related questions
Question
16.
The T-wave in the electrocardiogram above is caused by:
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repolarization of the ventricles, caused by K+ ions leaving ventricular muscle cells
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depolarization of the ventricles, caused by Na+ ions leaving ventricular muscle cells
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repolarization of the atria, caused by K+ ions leaving atrial muscle cells
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depolarization of the atria, caused by Na+ ions leaving atrial muscle cells
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Expert Solution
Step 1
In ECG T wave represents repolarization of ventricular myocardium. Any abnormality in the T wave is an indication of life threatening diseases.
Repolarization of ventricles is caused by the movement of positively charged K+ ions out of the cell.
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