The nurse count 3.5 large squares between two R waves on the patient's cardiac monitor tracing. The nurse calculates the patient's heart rate as _______ beats per minute. (Round to the nearest whole beat.)
Fill in the blank(s) with correct word
86
Rationale : To calculate the rate, divide the number of big squares between two R waves (in this case 3.5) into 300. 300/3.5 = 85.7, rounded to 86.
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