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The incidence of venous thromboembolism (VTE)--after hip arthroscopy
Insights
The incidence of venous thromboembolism (VTE) after hip arthroscopy is low at 1.4%. Routine pharmacologic prophylaxis may not be indicated for low-risk patients undergoing hip arthroscopy.
Area of Science:
- Orthopedic Surgery
- Vascular Surgery
- Medical Diagnostics
Background:
- Hip arthroscopy is an increasingly common orthopedic procedure.
- Venous thromboembolism (VTE) is a potential complication following lower extremity surgery.
- Risk stratification for VTE is crucial in surgical patient management.
Purpose of the Study:
- To determine the incidence of VTE after hip arthroscopy.
- To evaluate the safety and necessity of routine VTE prophylaxis in this patient population.
Main Methods:
- Prospective screening of 139 patients undergoing hip arthroscopy for VTE using duplex ultrasound.
- Stratification of patients for VTE risk prior to surgery.
- Exclusion of mechanical and chemoprophylaxis; recording of perioperative factors.
Main Results:
- A symptomatic VTE incidence of 1.4% (2/139) was observed.
- No asymptomatic deep vein thrombosis (DVT) cases were detected.
- The two VTE events (one DVT, one pulmonary embolus) occurred in patients with specific risk factors.
Conclusions:
- The postoperative VTE rate following hip arthroscopy is low.
- Routine pharmacologic prophylaxis may not be necessary for low-risk, properly stratified patients.
- Preoperative patient counseling regarding VTE risk is essential.
Purpose:
The purpose of this study was to determine the incidence of venous thromboembolism (VTE) after hip arthroscopy.
Methods:
Over the course of 13 months, four surgeons that routinely perform hip arthroscopy participated in a protocol to screen all patients postoperatively for deep venous thrombosis (DVT) using bilateral venous duplex ultrasound at or about the 2 week postoperative time point. All patients were assessed and stratified for VTE risk prior to surgery. Mechanical intraoperative and postoperative chemoprophylaxis were not administered. Perioperative factors, such as weightbearing status after surgery, traction time, and anesthesia type, were recorded.
Results:
We identified 139 eligible patients (average age 37.7, SD = 12.0) that underwent hip arthroscopy. The incidence of symptomatic VTE was 1.4 percent (2/139). Of the entire patient pool, 81 obtained a follow-up ultrasound. There were no cases of asymptomatic deep vein thrombosis (DVT). There were two symptomatic venous thromboembolic events noted; one DVT and one pulmonary embolus. One patient had no risk factors; the other was overweight and routinely took oral contraceptives. Amongst the patient cohort, the mean BMI was 25.9 (SD = 4.8). The mean traction time was 58.9 minutes (SD = 23.1). Most patients (71%) were partial weightbearing after the procedure.
Conclusion And Clinical Relevance:
In patients undergoing hip arthroscopy, the rate of postoperative VTE was low, despite the use of prolonged axial traction and surgical proximity to the pelvic veins. Although patients should be counseled preoperatively regarding the risk of VTE, we believe that routine use of pharmacologic prophylaxis is not indicated following hip arthroscopy if patients are properly risk stratified prior to surgery and found to be at low risk for VTE.
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