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70. A 32-yr-old apparently healthy male cyclist is self referred for a maximal exercise test to...

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70. A 32-yr-old apparently healthy male cyclist is self referred for a maximal exercise test to assess his VO2max and anaerobic threshold in preparation for an upcoming race. The following is his resting ECG. What is the heart rate?

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Answer #1

Heart rate can be calculated easily if the rhythm is normal or equal or uniform

300÷number of boxes between two QRS complex is the step to calculate HR ,here it is roughly 6 boxes

so 300÷6=50 bpm

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