What is the normal heart rate range for a newborn?

• A. 60-100
• B. 140-200
• C. 180-220
• D. 100-180

Answer: (D)

Newborns operate with a fast heart rate as their metabolism and autonomic control are still maturing. The normal range for a newborn’s heart rate is about 100–180 beats per minute. Within this window, the heart is able to meet the infant’s higher cardiac output needs. Rates below 100 can indicate bradycardia, which may reflect problems like hypoxia or other distress. Rates above 180 can indicate tachycardia, which could be due to fever, dehydration, pain, infection, or other stressors. Values like 60–100 are too low for a healthy newborn, and 180–220 or 140–200 sit outside the typical broad healthy range, making 100–180 the best fit.