Post-Hospital Discharge Venous Thromboembolism in Colorectal Surgery

Background There are limited data regarding the criteria for prophylactic treatment of venous thromboembolism (VTE) after hospital discharge. We sought to identify risk factors of post-hospital discharge VTE events following colorectal surgery. Methods The NSQIP database was utilized to examine patients developed VTE after hospital discharge following colorectal surgery during 2005–2013. Multivariate analysis using logistic regression was performed to quantify risk factors of VTE after discharge. Results We evaluated a total of 219,477 patients underwent colorectal resections. The overall incidence of VTE was 2.1 % (4556). 33.8 % (1541) of all VTE events occurred after hospital discharge. The length of postoperative hospitalization had a strong association with post-discharge VTE, with the highest risk in patients who were hospitalized for more than 1 week after operation (AOR 9.08, P