system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Heavy smoker for elective hernia repair, smoking should be stopped before how much period?
assistant
The correct answer is  Ans. is 'd' i.e., 6-8 weeksRef: Postgraduate anaesthesia p. 786'Limited prospective data suggest that cessation for at least 6-8 weeks preoperative is necessary to decrease the incidence of pulmonary complication."