What Are the Risk Factors for an Upper Extremity Deep Venous Thrombosis After Orthopaedic Irrigation and Debridement and Peripherally Inserted Central Catheter Placement?

BACKGROUND: Peripherally inserted central catheter (PICC) placement is necessary for delivery of intravenous (IV) antibiotics to treat bone and soft tissue infections. Upper extremity deep venous thrombosis (DVT) after PICC placement is a complication with unknown incidence in the orthopaedic literature. The major objectives of this study are Identifying the rate of upper extremity PICC-associated DVTs after orthopaedic procedures;Which orthopaedic subspecialties are most likely to encounter an upper extremity PICC-associated DVT?What surgeries or medical comorbidities are risk factors for upper extremity PICC-associated DVTs?Does type of DVT chemoprophylaxis decrease the risk of an upper extremity PICC-associated DVT? METHODS: A retrospective review of electronic medical records (EMR) was performed to include all patients undergoing irrigation and debridement (I&D) for treatment of orthopaedic surgery-related infections over a 10-year period. All patients with PICC placement were included for analyses. Age, sex, and medical comorbidities were extracted from the EMR. Mann-Whitney non-parametric tests, Fisher's exact tests, Chi-square tests, and Cochran-Mantel-Haenszel (CMH) tests were used to determine associations with DVT events for those with PICCs based on medical comorbidities, PICC lumen size, team placing the PICC, impact of implant removal, and protective effect of DVT chemoprophylaxis. Significance was set at p<0.05. RESULTS: Twenty-one of 660 patients (3.18% rate) were found to have an upper extremity PICC-associated DVT. A history of DVT (OR=8.99 [95% CI: 3.39, 49.42]) was significantly associated with an upper extremity PICC-associated DVT. The greatest risk for an upper extremity PICC-associated DVT was intramedullary implant removal (OR=12.43 [95% CI: 3.13, 49.52]). The type of DVT chemoprophylaxis did not significantly affect the likelihood of an upper extremity PICC-associated DVT. CONCLUSION: Intramedullary implant removal and a history of DVT are risk factors for an upper extremity PICC-associated DVT. The results of this study should be of particular interest to surgeons who do not typically give DVT prophylaxis and plan to perform surgery on patients with CHF, a history of a DVT, or plan to manipulate the intramedullary canal.