What is the formula for calculating heart rate from the RR interval in milliseconds?

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Multiple Choice

What is the formula for calculating heart rate from the RR interval in milliseconds?

Explanation:
The key idea is turning the time between beats into a rate per minute. The heart rate in beats per minute equals how many beats occur in one minute, and the RR interval in milliseconds is the time for one beat. There are 60,000 milliseconds in a minute, so the heart rate is 60,000 divided by the RR interval measured in milliseconds. For example, an RR of 800 ms corresponds to 60,000 / 800 = 75 bpm, and an RR of 1000 ms corresponds to 60 bpm. If the RR were given in seconds, the formula would be 60 divided by the RR in seconds. The milliseconds form specifically uses 60,000 / RR.

The key idea is turning the time between beats into a rate per minute. The heart rate in beats per minute equals how many beats occur in one minute, and the RR interval in milliseconds is the time for one beat. There are 60,000 milliseconds in a minute, so the heart rate is 60,000 divided by the RR interval measured in milliseconds. For example, an RR of 800 ms corresponds to 60,000 / 800 = 75 bpm, and an RR of 1000 ms corresponds to 60 bpm. If the RR were given in seconds, the formula would be 60 divided by the RR in seconds. The milliseconds form specifically uses 60,000 / RR.

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