5 doctors weighed in:

Why does a baby and an adult have different heart beat rates?

5 doctors weighed in
Dr. Richard Bensinger
Ophthalmology
3 doctors agree

In brief: Proportional to size

Heart rates are proportional to the size of the human and in fact in all mammals the rate is generally proportional to size with just a few exceptions.
Therefore a child will have a faster basic rate than an adult on average if they are otherwise normal.

In brief: Proportional to size

Heart rates are proportional to the size of the human and in fact in all mammals the rate is generally proportional to size with just a few exceptions.
Therefore a child will have a faster basic rate than an adult on average if they are otherwise normal.
Dr. Richard Bensinger
Dr. Richard Bensinger
Thank
Dr. James Ferguson
Pediatrics

In brief: Metabolism/need

Consider the difference in the two.
The baby is a construction zone with a lot of growth and development going on. The adult has finished construction and gone into upkeep mode. Both have the capacity to increase the rate as needed but the baseline is different to meet the different needs of the project at hand.

In brief: Metabolism/need

Consider the difference in the two.
The baby is a construction zone with a lot of growth and development going on. The adult has finished construction and gone into upkeep mode. Both have the capacity to increase the rate as needed but the baseline is different to meet the different needs of the project at hand.
Dr. James Ferguson
Dr. James Ferguson
Thank
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