What are the normal vital signs for an infant regarding heart rate (HR), respiratory rate (RR), and blood pressure (BP)?

For infants, the expected ranges for heart rate, respiratory rate, and blood pressure are critical for assessing their health status.

The correct choice indicates a heart rate range of 80-180 beats per minute, which appropriately covers the typical resting heart rate for infants. Infants generally have a higher heart rate compared to older children and adults, and this range accounts for the variability seen in infants' heart rates, especially when they are awake versus asleep.

The respiratory rate of 30-35 breaths per minute aligns well with normal values for infants. This range reflects their rapid breathing patterns, as infants typically have faster respiratory rates due to their smaller lung capacities and higher metabolic demands.

As for blood pressure, the range of 65-80 systolic over 40-50 diastolic is also within the normal limits for infants. Blood pressure is generally lower in infants compared to older children and adults, and these values provide an appropriate guideline for assessing normal blood pressure ranges in this age group.

Thus, this choice provides a comprehensive and accurate representation of normal vital signs for infants, adhering to standard pediatric guidelines.