For a child weighing 66 lb, if digoxin needs to be divided equally for every 12 hours, how much total digoxin should be given in a day?

To determine the total digoxin dosage for a child weighing 66 lb, it is essential to consider the frequency of administration and the total daily requirement.

Digoxin dosing often involves specific weight-based calculations. The total daily dose can be identified by understanding that if the medication is prescribed to be administered every 12 hours, this means it will be given twice a day.

If we assume the provided answer indicates that the total daily dose is 144 mcg, it follows that each dose, administered every 12 hours, amounts to half of this total. Thus, when split into two doses, it results in the child receiving 72 mcg per dose.

This structure of dividing the total dosage and administering it twice a day correctly reflects the medical guidelines for dosages that are frequently encountered in pediatric care, particularly for medications like digoxin, where precise dosing is critical for therapeutic effectiveness and safety. Therefore, the total amount needed for a 24-hour period is indeed 144 mcg.