title: Preoperative haemoglobin concentration and mortality rate after coronary artery bypass surgery.
abstract: We did an observational study in 2059 patients undergoing coronary artery bypass surgery to assess the effect of haemoglobin concentration on in-hospital mortality. We noted that individuals with a preoperative haemoglobin concentration of 100 g/L or less had a five-fold higher in-hospital mortality rate after surgery than those with a higher haemoglobin concentration, despite having had blood transfusions or the pump primed with blood preoperatively as a routine precaution. Our findings suggest that a low haemoglobin concentration is a marker of disease severity or comorbidity that has a major effect on survival rate.
authors.affiliation: Cardiothoracic Directorate, Faculty of Medicine, Imperial College School of Science, Technology and Medicine, Hammersmith Hospital, London W12 0NN, UK.
authors.forename: Dlear
authors.initials: D
authors.lastname: Zindrou
authors.forename: Kenneth M
authors.initials: KM
authors.lastname: Taylor
authors.forename: Jens Peder
authors.initials: JP
authors.lastname: Bagger
mesh_terms: D000368:Aged; D015897:Comorbidity; D001026:Coronary Artery Bypass; D005260:Female; D006454:Hemoglobins; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D015996:Survival Rate
chemical_list: D006454:Hemoglobins