What is the normal resting heart rate range for an infant?

What is the normal resting heart rate range for an infant?

• A. 80-100/min
• B. 110-160/min
• C. 60-80/min
• D. 170-190/min

Answer: (B)

Infants have a higher resting heart rate than older children and adults due to their faster metabolism and smaller heart size. A normal resting heart rate for an infant is about 100 to 160 beats per minute, with 110 to 160 listed as a common range in many references. This range best reflects the typical resting state for a healthy infant. Values lower than this, like 80–100 or 60–80, are more consistent with older children or adults at rest and would be unusually low for an infant. A resting rate of 170–190 would be considered tachycardic and not normal at rest, suggesting possible distress or another factor elevating heart rate. Remember, heart rate can vary with sleep, fever, crying, pain, or activity, but the standard resting range for infants centers around 100–160 bpm, commonly cited as 110–160 bpm.

Infants have a higher resting heart rate than older children and adults due to their faster metabolism and smaller heart size. A normal resting heart rate for an infant is about 100 to 160 beats per minute, with 110 to 160 listed as a common range in many references. This range best reflects the typical resting state for a healthy infant. Values lower than this, like 80–100 or 60–80, are more consistent with older children or adults at rest and would be unusually low for an infant. A resting rate of 170–190 would be considered tachycardic and not normal at rest, suggesting possible distress or another factor elevating heart rate. Remember, heart rate can vary with sleep, fever, crying, pain, or activity, but the standard resting range for infants centers around 100–160 bpm, commonly cited as 110–160 bpm.