Title: On the ECG, the T wave represents _____. Post by: chloenlail on Mar 1, 2018 On the ECG, the T wave represents _____.
a. atrial contraction b. atrial repolarization c. ventricular contraction d. ventricular repolarization Question 2 Lead II views the _____ wall of the left ventricle. a. anterior b. inferior c. septal d. lateral Question 3 What is meant by the term ejection fraction? What will be an ideal response? Question 4 In pacing, rate modulation refers to _____. a. the ability of a pacemaker to recognize and respond to intrinsic electrical activity b. the minimum level of electrical current needed to consistently depolarize the myocardium c. the ability of a pacemaker to increase the pacing rate in response to physical activity or metabolic demand d. a pacing lead with a single electrical pole at the distal tip of the pacing lead through which the stimulating pulse is delivered. Question 5 The intrinsic rate of the SA node is _____ beats/min. a. 40 to 60 b. 60 to 100 c. 100 to 180 d. 200 to 260 Question 6 Where should the positive electrode for lead V1 be positioned? a. Right side of the sternum, fourth intercostal space b. Left midaxillary line at the same level as V4 c. Left side of the sternum, fourth intercostal space d. Left anterior axillary line at the same level as V4 Question 7 Define systole. What will be an ideal response? Question 8 The intrinsic rate of the Purkinje fibers is _____ beats/min. a. 20 to 40 b. 40 to 60 c. 60 to 100 d. 100 to 180 Title: On the ECG, the T wave represents _____. Post by: mt1036222 on Mar 1, 2018 Ventricular repolarization is represented on the ECG by the T wave. Lead II views the inferior wall of the left ventricle. Rate modulation refers to a pacemaker's ability to adapt its rate to meet the body's needs caused by increased physical activity and then increase or decrease the pacing rate accordingly. A pacemaker's rate modulation capability may also be referred to as rate responsiveness or rate adaptation. The intrinsic rate of the SA node is 60 to 100 beats/min. The positive electrode for lead V1 is positioned on the right side of the sternum, fourth intercostal space. The Purkinje fibers have pacemaker cells capable of firing at a rate of 20 to 40 beats/min. |