Determining the regularity of a rhythm allows use of the most accurate method of calculating which of these cardiac cycle measurements?

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Quizplus · Accepted Answer

Determining the regularity of a rhythm is necessary for accurate calculation of heart rate, which is measured by counting the number of QRS complexes in a given time period. The P-R interval and ST segment are not directly affected by the regularity of the rhythm, and the QRS interval may be impacted by other factors such as bundle branch block or ventricular ectopy. Therefore, choice C (heart rate) is the best option for measurement based on knowledge of rhythm regularity.

Determining the Regularity of a Rhythm Allows Use of the Most