Exam Question and answers correctly solved 2023/2024

Exam Question and answers correctly solved 2023/2024When computing a heart rate from the ECG tracing, the nurse counts 15 of the small blocks between the R waves of a patient whose rhythm is regular. From these data, the nurse calculates the patient's heart rate to be A. 60 beats/min. B. 75 beats/min. C. 100 beats/min. D. 150 beats/min. - correct answer Correct answer: C Since each small block on the ECG paper represents 0.04 seconds, 1500 of these blocks represents 1 minute. By dividing the number of small blocks (15, in this case) into 1500, the nurse can calculate the heart rate in a patient whose rhythm is regular (in this case, 100). Which statement best describes the electrical activity of the heart represented by measuring the PR interval on the ECG?