Low Dose Rhesus Immunoprophylaxis after Early Induced Abortions

. A dose of 50 μg anti‐D immunoglobulin was administered as rhesus immunoprophylaxis following induced abortion performed by suction curettage before the thirteenth week of pregnancy in 463 consecutive patients. A feto‐maternal blood loss of less than 2 ml was detected in 44 women (12%). After 6 months, a follow‐up of 381 patients (82%) established that none of these patients was rhesus immunized with in vitro demonstrable antibodies. It is concluded that the low dose of anti‐D administered is to be recommended for rhesus immunoprophylaxis after first trimester abortion.