Perioperative medicine & outcomes

Impact of short duration smoking cessation on post-operative complications: A systematic review and meta-analysis

J Clin AnesthPublished Systematic review and meta-analysis

Authors' conclusion

Short term cessation of at least 2-4 weeks demonstrates benefits in reducing post-operative complications.

Study context

Population
Adults undergoing surgery with a defined preoperative smoking cessation interval55 studies
Comparison
Short-term preoperative smoking cessation vs active smoking
Outcome
Postoperative complications (pulmonary complications, surgical site infection, wound complication, bleeding, mortality, composite complications)

Pooled result

As reported in the abstract

Pulmonary complications
Each group vs active smokersRelative risk (95 % CI)
≥2 weeks27 % reduction
0.73(0.60–0.89)
≥4 weeks29 % reduction
0.71(0.61–0.82)
≥8 weeks37 % reduction
0.63(0.41–0.95)

Further pooled results

OutcomeRR (95 % CI)
Wound complications≥4 weeks vs Active smokers · 33 % lower risk0.67 (0.47–0.94)
Composite complications≥4 weeks vs Active smokers · 31 % lower risk0.69 (0.63–0.76)
Mortality≥4 weeks vs Active smokers · 14 % lower risk0.86 (0.77–0.97)

Surgical site infections and bleeding

Short-term cessation did not seem to have a significant impact

Pulmonary complications, former smokers vs non-smokers

More prevalent in former smokers than non-smokers, even after cessation

Original publication

Impact of short duration smoking cessation on post-operative complications: A systematic review and meta-analysis. J Clin Anesth. Published 20 August 2025. doi:10.1016/j.jclinane.2025.111967

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