In GBS prophylaxis, intrapartum antibiotics should be administered for at least how many hours before delivery?

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Multiple Choice

In GBS prophylaxis, intrapartum antibiotics should be administered for at least how many hours before delivery?

Explanation:
The main idea is that giving intrapartum antibiotics long enough before birth allows the drug to reach protective levels in the mother and fetus, reducing the chance of transmitting Group B Streptococcus to the newborn. The minimum time needed is four hours before delivery, so that penicillin G achieves effective concentrations by the time of birth. Shorter windows like one or two hours may not provide adequate protection, while six hours would still be protective but exceeds the minimum. The standard choice is penicillin G, with alternatives used if there’s a true allergy.

The main idea is that giving intrapartum antibiotics long enough before birth allows the drug to reach protective levels in the mother and fetus, reducing the chance of transmitting Group B Streptococcus to the newborn. The minimum time needed is four hours before delivery, so that penicillin G achieves effective concentrations by the time of birth. Shorter windows like one or two hours may not provide adequate protection, while six hours would still be protective but exceeds the minimum. The standard choice is penicillin G, with alternatives used if there’s a true allergy.

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