Rh isoimmunisation in which trimester: (A) 10-12 weeks, (B) 30-32 weeks, (C) 36 weeks, (D) Immediately after delivery
Answer is B. (B) 30-32 weeks> Because of its short half-life, Rh IgG routinely is administered once at 28-32 weeks' gestation and again within 72 hours after birth to all Rh-negative pregnant females as a part of routine prenatal care.