Here are some highlights of the Evidence
+ Smoking increases surgical risk
In a summary of 107 studies up to 2014, investigators found that the risk of wound problems like wound infections, lung problems like pneumonia, and the need of intensive care were almost doubled in smokers compared with non-smokers. Other studies since then have shown similar results.
+ Smoking impairs wound healing
Smoking restricts oxygenation of tissues and weakens the response of immune cells. This may lead to delayed healing and complications associated with wound healing after surgery.
+ Quitting smoking reduces surgical risks
Many studies show that quitting smoking reduces surgical risks. This summary shows specifically that tobacco interventiosn (that is, efforts to help surgical patients quit) helps prevent complications.
+ Nicotine Replacement is safe for Surgery
Nicotine replacement therapy, in the form of gum or patches, can double the chances of successful quitting. Although there have been some concerns about the vasoconstricting effects of nicotine, this review shows that the beneift of nicotine replacement outweigh any risks in surgical patients.
+ Smoking increases Health Care Costs after surgery
Health care costs during the first year after hospital discharge for an inpatient surgical procedure are much higher in former and current smokers, in part because the number of hospitalizations is significantly higher among current smokers, and the length of hospitalization tends to be longer.
+ Having surgery doubles the chances of quitting
Major surgery more than doubles the chances of successfully quitting. Even those having a relatively minor outpatient procedure were about 30% more successful.
+ Treating surgical patients who smoke saves money
Smokers are at increased risk for complications such as wound infections that can significantly increase hospital costs. Providing tobacco treatment before surgery is a cost-effective means of reducing these costs.