Intraoperative anemia and single red blood cell transfusion during cardiac surgery: an assessment of postoperative outcome including patients refusing blood transfusion.

This study by Hogervorst et al. is an extensive database analysis that has some methodological problems which were appropriately addressed by the authors. Reading of the article is recommended as the results are indeed new with regard to the outcome of anaemic Jehovah’s Witness patients in cardiac surgery.

– Christian von Heymann