Patients who quit smoking for their surgery have better outcomes.

Reduced all-cause mortality by 68% and cardiac death by 75% in quitters after CABG.
Reduced risk of pulmonary embolism or any cardiovascular event.
Relative risk reduction of perioperative pulmonary complications by 31% when abstinent for eight weeks.
Smokers have a risk ratio for wound complications (e.g. infection, dehiscence) of 2.15 when compared to nonsmokers.

Read the literature here.

Preoperative smoking cessation reduces patient risk for complications (Sørensen LT, Annals Surg, 2012 Jun)

EFFORTS TO HELP SURGICAL PATIENTS QUIT WILL BE REWARDED WITH

IMPROVED SURGICAL OUTCOMES AND LONG-TERM HEALTH BENEFITS.

there are clear benefits to quitting before and remaining abstinent after a surgery.

Read the bottom line research highlights here.