Association of the body mass index with outcomes in elderly patients (≥80 years) undergoing percutaneous coronary intervention.

Background: The obesity paradox has been recognized in patients with cardiovascular disease. The association between obesity and outcomes in elderly patients undergoing percutaneous coronary intervention (PCI) has not been investigated, yet.

Methods: A total of 990 elderly (≥80 years) patients undergoing PCI at our institution between January 2009 and December 2017 and with available data on body mass index (BMI) were divided according to BMI tertiles (lowest BMI tertile: ≪24.