What is the pulse rate range for an infant (1 month to 1 year)?

What is the pulse rate range for an infant (1 month to 1 year)?

• A. 100 to 160
• B. 60 to 100
• C. 120 to 140
• D. 80 to 120

Answer: (A)

Infants have higher resting heart rates because their bodies have higher metabolic demands and their hearts pump less blood with each beat, so the rate must stay fast to maintain adequate circulation. For a child aged 1 month to 1 year, a typical resting pulse rate falls in the range of about 100 to 160 beats per minute, which is why that option is the best match. This range accommodates normal variability due to activity, crying, fever, and other factors that can temporarily raise the heart rate. The other ranges don’t fit the typical infant baseline: 60 to 100 is more like an adult resting range (and would be unusually low for an infant), 120 to 140 is narrower and misses lower healthy values, and 80 to 120 underrepresents the upper end seen in many infants.

Infants have higher resting heart rates because their bodies have higher metabolic demands and their hearts pump less blood with each beat, so the rate must stay fast to maintain adequate circulation. For a child aged 1 month to 1 year, a typical resting pulse rate falls in the range of about 100 to 160 beats per minute, which is why that option is the best match. This range accommodates normal variability due to activity, crying, fever, and other factors that can temporarily raise the heart rate.

The other ranges don’t fit the typical infant baseline: 60 to 100 is more like an adult resting range (and would be unusually low for an infant), 120 to 140 is narrower and misses lower healthy values, and 80 to 120 underrepresents the upper end seen in many infants.