OBJECTIVES The aim of this study was to evaluate the impact of red blood cell (RBC) transfusions on the occurrence of stroke and transient ischaemic attack (TIA) after cardiac surgery. METHODS Data on 14 956 patients undergoing coronary artery bypass grafting (CABG) and valve surgery (with or without concomitant CABG) were retrieved at three European University Hospitals. The prognostic impact of RBC transfusion on postoperative stroke and TIA was investigated by logistic regression and multilevel propensity score analysis. RESULTS Postoperative stroke was observed in 147 (1.0%) patients and combined stroke/TIA in 238 (1.6%). Of the total population, 6439 (43%) patients received RBC transfusion with a median of 2 units (25th-75th percentile, 2-4 units). When adjusted for other significant risk factors, RBC transfusion was an independent predictor of stroke [odds ratio (OR) 1.14; 95% confidence interval (CI) 1.11-1.17 per unit] and stroke/TIA (OR 1.12; 95% CI 1.09-1.15 per unit). Increase in the amount of transfused RBC units was associated with higher rates of stroke (no RBC transfusion: 0.5%, 1-2 RBC units: 1.0%, OR 1.42; >2 RBC units: 2.7%, OR 3.10) and stroke/TIA (no RBC transfusion: 0.8%, 1-2 RBC units: 1.8%, OR 1.49; >2 RBC units: 4.0%, OR 2.72). Multilevel propensity score analysis confirmed these findings and showed a very high risk of stroke (3.9%; OR 3.85; 95% CI 2.30-6.45) and stroke/TIA (5.9%; OR 3.30; 95% CI 2.17-5.02) associated with transfusion of ≥ 6 units of RBCs. CONCLUSIONS Transfusion of more than 2 units of RBCs after cardiac surgery is associated with a significantly increased risk of postoperative stroke and TIA.

Red blood cell transfusion is a determinant of neurological complications after cardiac surgery

BEGHI, CESARE;
2015-01-01

Abstract

OBJECTIVES The aim of this study was to evaluate the impact of red blood cell (RBC) transfusions on the occurrence of stroke and transient ischaemic attack (TIA) after cardiac surgery. METHODS Data on 14 956 patients undergoing coronary artery bypass grafting (CABG) and valve surgery (with or without concomitant CABG) were retrieved at three European University Hospitals. The prognostic impact of RBC transfusion on postoperative stroke and TIA was investigated by logistic regression and multilevel propensity score analysis. RESULTS Postoperative stroke was observed in 147 (1.0%) patients and combined stroke/TIA in 238 (1.6%). Of the total population, 6439 (43%) patients received RBC transfusion with a median of 2 units (25th-75th percentile, 2-4 units). When adjusted for other significant risk factors, RBC transfusion was an independent predictor of stroke [odds ratio (OR) 1.14; 95% confidence interval (CI) 1.11-1.17 per unit] and stroke/TIA (OR 1.12; 95% CI 1.09-1.15 per unit). Increase in the amount of transfused RBC units was associated with higher rates of stroke (no RBC transfusion: 0.5%, 1-2 RBC units: 1.0%, OR 1.42; >2 RBC units: 2.7%, OR 3.10) and stroke/TIA (no RBC transfusion: 0.8%, 1-2 RBC units: 1.8%, OR 1.49; >2 RBC units: 4.0%, OR 2.72). Multilevel propensity score analysis confirmed these findings and showed a very high risk of stroke (3.9%; OR 3.85; 95% CI 2.30-6.45) and stroke/TIA (5.9%; OR 3.30; 95% CI 2.17-5.02) associated with transfusion of ≥ 6 units of RBCs. CONCLUSIONS Transfusion of more than 2 units of RBCs after cardiac surgery is associated with a significantly increased risk of postoperative stroke and TIA.
2015
http://icvts.oxfordjournals.org/
Aortic valve; Blood transfusion; Cardiac surgery; Coronary artery bypass; Mitral valve; Stroke; Transient ischaemic attack; Aged; Chi-Square Distribution; Coronary Artery Bypass; Erythrocyte Transfusion; Europe; Female; Heart Valve Prosthesis Implantation; Hospital Mortality; Hospitals, University; Humans; Ischemic Attack, Transient; Logistic Models; Male; Middle Aged; Multivariate Analysis; Odds Ratio; Propensity Score; Retrospective Studies; Risk Assessment; Risk Factors; Stroke; Time Factors; Treatment Outcome; Surgery; Pulmonary and Respiratory Medicine; Cardiology and Cardiovascular Medicine
Mariscalco, Giovanni; Biancari, Fausto; Juvonen, Tatu; Zanobini, Marco; Cottini, Marzia; Banach, Maciej; Murphy, Gavin J.; Beghi, Cesare; Angelini, Gianni D.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2053827
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