You are using the 300, 150, 100, 75, 60, 50 method to determine the heart rate. You locate an R wave that falls on a bold line on the ECG paper. The next consecutive R wave after your starting points falls directly on the 4th bold line. This patient's heart rate is ______ beats per minute.

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The 300, 150, 100, 75, 60, 50 method is used to estimate heart rate by counting the number of large boxes between R waves on an ECG. If the second R wave falls on the 4th bold line, the heart rate is 75 beats per minute.

You Are Using the 300, 150, 100, 75, 60, 50