TEST BANK FOR ECGS MADE EASY 6TH EDITION BY BARBARA

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Chapter 02: Basic Electrophysiology Aehlert: ECGs Made Easy, 6th Edition MULTIPLE CHOICE 1. In most patients, the sinoatrial (SA) and atrioventricular (AV) nodes are supplied by the _____ coronary art... ery. a. right b. left main c. circumflex d. left anterior descending 2. The intrinsic rate of the atrioventricular (AV) bundle is _____ beats/min. a. 20 to 40 b. 40 to 60 c. 60 to 80 d. 80 to 100 3. How do you determine whether the atrial rhythm on an ECG tracing is regular or irregular? a. Compare QT intervals. b. Compare PR intervals. c. Compare R to R intervals. d. Compare P to P intervals 4. _____ is the ability of cardiac pacemaker cells to spontaneously initiate an electrical impulse without being stimulated from another source, such as a nerve. a. Excitability b. Conductivity c. Automaticity d. Contractility [Show More]

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