Complications of Pregnancy · NEET PG Preparation Obstetrics & Gynaecology
A 25-year-old Rh-negative primigravida delivers an Rh-positive healthy newborn. Her indirect Coombs test is negative. What is the standard dose and r…
Practice question from Complications of Pregnancy (NEET PG Preparation Obstetrics & Gynaecology), with the correct answer and a step-by-step solution.
easy · MCQ · Q-4F77C9
A 25-year-old Rh-negative primigravida delivers an Rh-positive healthy newborn. Her indirect Coombs test is negative. What is the standard dose and recommended timing of anti-D immunoglobulin administration to prevent Rh alloimmunization?
- A.150 mcg within 72 hours of delivery
- B.300 mcg within 72 hours of deliveryCorrect answer
- C.300 mcg at 28 weeks only, none postpartum
- D.150 mcg at 28 weeks and 300 mcg postpartum
Solution
For an Rh-negative mother delivering an Rh-positive baby with a negative postpartum antibody screen, a standard dose of 300 mcg of anti-D immune globulin should be administered intramuscularly within 72 hours of delivery to prevent primary alloimmunization.
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