Abstract: | Intrauterine transfusion was performed or attempted in 101 cases during a period of four and a half years. After exclusion of six cases, for reasons detailed in the text, 95 cases are considered in detail. Intrauterine transfusion was successfully performed in 93 of these, with a mean of 2·8 transfusions each. Forty-four babies (46·3%) survived and all but one are so far developing normally. |