October 21, 2014
When comparing hospitals based on postoperative venous thromboembolism rates, rankings are significantly altered when both pre- and post-discharge events within 30 days of knee or hip arthroplasty are taken into account vs. rankings that only consider pre-discharge events.
Researchers evaluated 23,924 patients who underwent partial or total hip or knee arthroplasty at 95 hospitals from the American College of Surgeons National Surgical Quality Improvement Program database between 2008 and 2010. Metrics analyzed included deep venous thrombosis (DVT), pulmonary embolism (PE), and pre-discharge, post-discharge and 30-day postoperative rates of venous thromboembolism (VTE). The researchers compared risk-adjusted hospital rankings based on only pre-discharge events and those based on both pre-discharge events as well as those within 30 days of surgery.