Cardiopulmonary Anatomy & Physiology
7th Edition
ISBN: 9781337794909
Author: Des Jardins, Terry.
Publisher: Cengage Learning,
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Chapter 13, Problem 6RQ
Summary Introduction
Introduction:
The heart is a myogenic organ and thus, can generate electrical impulses which are responsible for pumping of blood. The electrical activities of the heart are of major clinical significance and a system called electrocardiogram (ECG) is used to monitor the electrical activity of the heart. The ECG uses a characteristic graph paper having a square that denotes a particular time interval and this paper runs at the same speed as the ECG system. The ECG consists of the P wave, QRS complex, T wave, U wave, and QT interval.
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The normal duration of the T wave is A. 0.05 second or less B. 0.10 second or less C. 0.15 second or less D. 0.20 second or less
The normal duration of the PR interval is no longer than A. 0.12 second B. 0.15 second C. 0.20 second D. 0.50 second
The normal duration of the QRS complex is less than A. 0.01 second B. 0.05 second C. 0.12 second D. 0.15 second
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Cardiopulmonary Anatomy & Physiology
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