• C H Ho, W K Chau, T J Yu, and K K Cheng.
• Department of Internal Medicine, Veterans General Hospital, Taipei, Taiwan, R.O.C.
• Eur. J. Haematol. 1990 Sep 1;45(3):139-42.

AbstractGlycosylated hemoglobin (GH), hemoglobin (Hb), hematocrit, LDH and serum bilirubin were measured pre-operatively, and 1-10 days and 11-42 d post-operatively in 42 patients undergoing cardiac surgery. Their mean age was 39.90 years, ranging from 4 to 68 yr. In the early post-operation days, Hb and hematocrit, but not GH percentage, were significantly decreased. This demonstrates that, at this stage, acute blood loss rather than hemolysis is more prominent. In the later post-operative days, GH, but not Hb or hematocrit, decreased significantly. This indicates the presence of chronic hemolysis with bone marrow compensation. In our study, the incidence of chronic mild hemolysis after cardiac surgery was very high (68.8%). We conclude that GH determination is a simple, easy and sensitive method to detect chronic hemolysis and we suggest measuring it in every case with suspicion of hemolysis.

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