What Is the Most Accurate Way to Calculate the Heart

question 3

Multiple Choice

What is the most accurate way to calculate the heart rate from an ECG?

• A) Count the number of R-R intervals in 6 seconds,and multiply by 10.
• B) Count the number of small squares between the R-R interval,and divide by 1500.
• C) Count the number of QRS complexes in 1 minute.
• D) Count the large squares between one R-R interval,and divide by 300.

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