Certified Medical Assistant (CMA AAMA)Clinical Workflow and Patient IntakeMedium
A medical assistant obtains a pulse rate of 130 beats per minute on a healthy, calm 6-month-old infant during a well-child visit. How should this finding be interpreted?
- AWithin the normal range for an infant this age
- BBradycardic and should be rechecked in 10 minutes
- CTachycardic and requires immediate physician notification
- DAbnormal only if respiratory rate is also elevated
Show answer & explanationAnswer & explanation
Correct answer: A. Within the normal range for an infant this age
Normal heart rate for infants (age 1–12 months) ranges from approximately 100 to 160 beats per minute. A pulse of 130 bpm in a calm, healthy infant is within normal limits and requires no intervention.
Why the other options are wrong
- B. Incorrect; this rate is not below normal range.
- C. Incorrect; 130 bpm is normal for this age, not tachycardic.
- D. Incorrect; interpretation is based on age-appropriate norms, not paired with respiratory rate alone.
Pediatric Pulse Norms
Normal pulse rates vary by age; infants (1–12 months) normally range from 100–160 bpm, much higher than adult norms.
- Newborns: 100-160 bpm
- Toddlers: 90-150 bpm
- Adults: 60-100 bpm
Memory trick: Little hearts beat faster