A Canadian investigation of more than 8,000 patients who underwent major elective non-cardiac surgery and received PCI within 10 years suggests that the earliest optimal time for their surgery is 46 to 180 days after bare-metal stent implantation and more than 180 days after drug-eluting stent implantation. Surgery at less than 45 days had 30-day event rates of 6.7% for bare-metal stents and 20.0% for drug-eluting stents. Surgery at 45 to 180 days had an event rate of 2.6% for bare-metal stents, but the rate increased with surgery past 180 days. Surgery after 180 days had an event rate of 1.2% for those who received drug-eluting stents within 10 years.

Abstract: Circulation, August 14, 2012 (online).