A nurse is preparing to administer digoxin to a 6-month-old infant. Prior to administering the dose, the nurse measures the apical heart rate. The nurse should withhold the dose if the infant's apical heart rate is less than what rate?

Rationale: For infants 6 months old, digoxin should be withheld if the apical heart rate is below 90 beats per minute. This is to prevent the risk of bradycardia, which is a common adverse effect of digoxin in infants. Answer: 90bpm(beats per minute)