Reduced 30-day mortality in men after elective coronary artery bypass surgery with minimized extracorporeal circulation-a propensity score analysis

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urn:nbn:de:bvb:355-epub-237928 Copy

Ried, Michael ; Kobuch, Reinhard ; Rupprecht, Leopold ; Keyser, Andreas ; Hilker, Michael ; Schmid, Christof ; Diez, Claudius

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Date of publication of this fulltext: 12 Apr 2012 11:07

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Details

Item type:	Article
Date:	16 March 2012
Institutions:	Medicine > Lehrstuhl für Herz-, Thorax- und herznahe Gefäßchirurgie
Projects:	Open Access Publizieren (DFG)
Identification Number:	Value Type 10.1186/1471-2261-12-17 DOI
Keywords:	Outcome, Men, MECC, CABG, Mortality, Propensity score analysis
Dewey Decimal Classification:	600 Technology > 610 Medical sciences Medicine
Status:	Published
Refereed:	Yes, this version has been refereed
Created at the University of Regensburg:	Yes
Item ID:	23792

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Abstract

Background Impact of minimized extracorporeal circulation (MECC) for coronary surgery on mortality remains controversial and gender significantly influence outcome. Methods We analyzed 3,139 male patients undergoing elective coronary surgery between 01/2004 and 05/2009. Using propensity score matching after binary logistic regression, 1,005 patients (from 1,119 patients) undergoing surgery with ...

Abstract

Background
Impact of minimized extracorporeal circulation (MECC) for coronary surgery on mortality remains controversial and gender significantly influence outcome.
Methods
We analyzed 3,139 male patients undergoing elective coronary surgery between 01/2004 and 05/2009. Using propensity score matching after binary logistic regression, 1,005 patients (from 1,119 patients) undergoing surgery with MECC could be matched with 1,005 patients (from 2,020 patients) undergoing surgery with conventional extracorporeal circulation (CECC). Primary outcome was 30-day mortality.
Results
Unadjusted 30-day mortality was 2.7% in patients with CECC and 0.8% in those with MECC (mean difference -1.9%; p < 0.001). The adjusted mean difference (average treatment effect of the treated) after matching was -1.5% (95% confidence interval (CI) -2.6 to -0.4; p = 0.006). Postoperative hospital stay was shorter in patients operated with minimized systems (adjusted mean difference -0.8 days; 95% CI -1.46 to -0.09; p = 0.03) and incidence of postoperative neurocognitive dysfunction was also lower (adjusted mean difference -1.3%; 95% CI -2.2 to -0.4; p = 0.001). Chest tube drainage (adjusted mean difference +22 mL; 95% CI -47 to 91; p = 0.5) and risk for acute kidney injury, kidney injury and failure according to RIFLE criteria (adjusted mean difference -1.0%; 95% CI -2.5 to 0.6; p = 0.24) proved to be insignificant between both groups. Apart from reduced 30-day mortality, however, average treatment effects for intensive care unit stay, postoperative hospital stay, chest tube drainage and kidney injury did not significantly differ.
Conclusion
Using propensity score analysis, we observed an association between MECC and reduced 30-day mortality in men, but our results call for further analysis.

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Metadata last modified: 02 Jun 2018 23:25

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