Key result
Smoking was an independent predictor of 5-year mortality after CABG, with smokers experiencing 18.8% mortality compared to 13.6% for exsmokers and 12.5% for never smokers.
Why the study?
Does smoking increase 2- and 5-year mortality in patients undergoing coronary artery bypass grafting?
Cohort (n=2,121)
Does smoking increase 2- and 5-year mortality in patients undergoing coronary artery bypass grafting?
Active smoking is a strong, independent predictor of increased 5-year mortality following coronary artery bypass grafting.
Answers are grounded in this paper and cite their sources.
Supports intensified preoperative smoking cessation counseling; extends observational data on post-CABG mortality but leaves causality unproven.
We describe the 2- and 5-year prognoses following coronary artery bypass grafting (CABG) in relation to smoking habits among consecutive patients being operated on in western Sweden during a 3-year period. Among the 2,121 patients, 10.2% admitted smoking at coronary angiography as compared with 7.5% 2 years after CABG (NS). Among smokers, the mortality during the subsequent 2 years was 8.9% as compared with 6.5% for exsmokers and 7.3% for never smokers (NS). During the 5-year follow-up, smokers had a mortality of 18.8% as compared with 13.6% for exsmokers and 12.5% for never smokers (p = 0.03). When correcting for dissimilarities in previous history, smoking was a strongly significant independent (p < 0.0001) predictor of 5-year mortality.
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Herlitz et al. (2008) conducted a cohort in Coronary artery bypass grafting (n=2,121). Smoking vs. Exsmokers and never smokers was evaluated on 5-year mortality (p=0.03). Smoking was an independent predictor of 5-year mortality after CABG, with smokers experiencing 18.8% mortality compared to 13.6% for exsmokers and 12.5% for never smokers.
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