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A member asked:
I get high 180 heart rate at night but woke up this morning with a heart rate of 36. what can cause such variability?
A doctor has provided 1 answer
Arrhythmia: A heart rate of 180, given your age, is approaching the maximum heart rate that doctor's expect when doing "usual" activities (in this case, exercise) without an underlying disorder. If u get this heart rate while sleeping or resting, then u could have atrial fibrilllation (A-fib) or another arrhythmia. In the morning, ur heart compensates by slowing down to rest (the only way). See a cardiologist
Answered 4/29/2015
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