<prompt> Heavy smoker for elective hernia repair, smoking should be stopped before how much period?4 days10 days3-4 weeks6-8 weeks  <response>: Ans. is d i.e., 6-8 weeksRef: Postgraduate anaesthesia p. 786Limited prospective data suggest that cessation for at least 6-8 weeks preoperative is necessary to decrease the incidence of pulmonary complication. 