抄録
An ovarian cystoma patient of blood group A, was transfused with 200 cc of reserved blood of AB group in about 300 minutes during the ovarectomy. In the course of 3 days after transfusion, slight hemoglobinuria was seen. However, the other symptoms usually seen in incompatible blood transfusion such as pain in the loin and lower extremities, precordial oppression, nausea, vomiting, fever, tachycardia, hypotension and oliguria were not noted.
It was the cause of the misjudgment of blood group that rouleau formation of blood cells was mistaken for agglutination.
Anti-B agglutinin titer of the patient was as low as 4 times, and this seemed to be the reason why the side-effect was so mild.
