How long before surgery should a patient stop smoking or using tobacco products?

Smoking Cessation Before Surgery

Smoking cessation is strongly recommended at least 4 weeks before surgery to reduce respiratory and wound-healing complications. 1, 2, 3

Timing of Smoking Cessation

• Smoking cessation of 4-8 weeks before surgery is necessary to significantly reduce respiratory and wound-healing complications 1, 2, 4, 3
• The risk reduction associated with cessation begins accruing after several weeks of abstinence 5
• Patients who quit smoking for more than 10 weeks before surgery can achieve complication rates similar to those who have never smoked 6
• Short-term smoking cessation (less than 4 weeks) has unclear benefits for reducing postoperative respiratory complications 1

Benefits of Preoperative Smoking Cessation

• Reduces overall postoperative complications by approximately 49% 7
• Decreases risk of specific complications:
  • Respiratory complications (pneumonia, atelectasis, respiratory distress) 6
  • Wound complications (delayed healing, infection) 1, 8
  • Air leakage and bronchopleural fistula (in lung surgery) 6
• Number needed to treat to prevent one complication is approximately 5 patients 7

Recommended Approach to Smoking Cessation

• Intensive interventions that begin 4-8 weeks before surgery show the greatest benefit 8, 9
• Effective cessation strategies include:
  • Individual counseling with weekly sessions 8
  • Nicotine replacement therapy (NRT) in addition to counseling 8, 9
  • Face-to-face or telephone counseling with written materials 5

Special Considerations for Different Surgeries

• For abdominal and pelvic surgeries, smoking cessation of at least 4 weeks is strongly recommended 1, 2, 4
• For liver surgery, smoking cessation should be counseled at least 4 weeks prior to hepatectomy 3
• For plastic surgery, cessation is recommended 4 weeks preoperatively and until primary healing of the operative site (approximately 2 weeks postoperatively) 10

Important Caveats

• The limitations of the evidence make it impossible to justify delaying urgent lung cancer surgery solely to pursue smoking cessation 5
• For non-urgent surgeries, the benefits of delaying surgery to achieve 4+ weeks of smoking cessation likely outweigh the risks 8, 7
• Tobacco withdrawal assistance, both counseling and pharmacotherapy, should be offered to maximize cessation success rates 10, 8
• Patients who continue to smoke have a two to threefold increase in postoperative morbidity 11

Algorithm for Smoking Cessation Before Surgery

1. Identify all smokers at initial surgical consultation
2. For elective procedures:
   • Recommend complete cessation at least 4 weeks before surgery 1, 2, 3
   • Provide intensive counseling and nicotine replacement therapy 8, 9
   • Consider referral to tobacco cessation specialist for heavily dependent smokers 10
3. For urgent procedures (e.g., cancer surgery):
   • Encourage immediate cessation but do not delay necessary surgery 5
   • Provide cessation support throughout the perioperative period 5
4. Continue cessation support postoperatively to promote long-term abstinence 10, 8