Which description best reflects the typical vital signs for a healthy 1-week-old infant?

Which description best reflects the typical vital signs for a healthy 1-week-old infant?

• A. A heart rate 180 bpm, respiration 40, BP 44 systolic
• B. A heart rate 100 bpm, respiration 26, BP 44
• C. A heart rate 165 bpm, respiration 65, BP 94
• D. A heart rate around 130-160 bpm, respiration around 40, BP around 70-90 mm Hg

Answer: (D)

Normal vital signs for a healthy 1-week-old infant typically show a heart rate around 130–160 beats per minute, respirations about 40 breaths per minute, and systolic blood pressure roughly 70–90 mm Hg. This pattern reflects the newborn’s high metabolic needs, steady but not excessive breathing, and the still-maturing cardiovascular system that usually sits at a lower blood pressure. The described combination aligns with these expectations: a heart rate in the typical range, a breathing rate near the normal value, and a systolic pressure within the newborn’s usual band. Patterns outside these ranges—extremely high or low heart rate, respiration well above or below the normal window, or markedly abnormal blood pressure—would raise concern for distress or illness. When assessing, consider the infant’s state (quiet or asleep vs. crying) and count for a full minute to establish an accurate baseline.

Normal vital signs for a healthy 1-week-old infant typically show a heart rate around 130–160 beats per minute, respirations about 40 breaths per minute, and systolic blood pressure roughly 70–90 mm Hg. This pattern reflects the newborn’s high metabolic needs, steady but not excessive breathing, and the still-maturing cardiovascular system that usually sits at a lower blood pressure. The described combination aligns with these expectations: a heart rate in the typical range, a breathing rate near the normal value, and a systolic pressure within the newborn’s usual band. Patterns outside these ranges—extremely high or low heart rate, respiration well above or below the normal window, or markedly abnormal blood pressure—would raise concern for distress or illness. When assessing, consider the infant’s state (quiet or asleep vs. crying) and count for a full minute to establish an accurate baseline.