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Venous Thromboembolic Complications to Hysterectomy for Benign Disease: A Nationwide Cohort Study.
STUDY OBJECTIVE: To estimate the risk of venous thromboembolic complications after abdominal, laparoscopic, and vaginal hysterectomy when performed for benign disorders.
DESIGN: A nationwide cohort study (Canadian Task Force classification II-2).
SETTING: Data from Danish national registers on all women undergoing hysterectomy for benign conditions from 1996 to 2015.
PATIENTS: Women aged 18 years and older who underwent hysterectomy for benign disease were stratified into 3 groups according to the hysterectomy approach: abdominal, laparoscopic, or vaginal.
INTERVENTIONS: Hysterectomy.
MEASUREMENTS AND MAIN RESULTS: Eighty-nine thousand nine hundred thirty-one women met the inclusion criteria. Venous thromboembolism (VTE) as a diagnosis or cause of death was identified. The risk of postoperative VTE was examined with Cox proportional hazard models adjusting for age, surgical approach, and relevant comorbidities. The mean age was 49.9, 47.9, and 54.3 years for women with abdominal, laparoscopic, and vaginal hysterectomy, respectively. The crude incidences of VTE within 30 days after hysterectomy were 0.24% (n = 142), 0.13% (n = 12), and 0.10% (n = 21). The most important predictors of VTE were the approach to hysterectomy and a history of thromboembolic disease. In the multivariable analysis, the risk of VTE was significantly reduced with laparoscopic hysterectomy (hazard ratio [HR] = 0.51; 95% confidence interval [CI], 0.28-0.92; p = .03) and vaginal hysterectomy (HR = 0.39; 95% CI, 0.24-0.63; p < .001) when compared with the abdominal procedure. Data on postoperative heparin thromboprophylaxis were available in 53 566 patients, and the adjusted HR was 0.63 (95% CI, 0.42-0.96; p = .03) in patients receiving heparin thromboprophylaxis.
CONCLUSION: The 30-day cumulative incidence of VTE after hysterectomy for benign conditions was low overall (0.19%). Laparoscopic hysterectomy and vaginal hysterectomy carry a lower risk than the abdominal procedure. Postoperative heparin thromboprophylaxis significantly reduces the risk of VTE and should be considered, especially if risk factors are present.
DESIGN: A nationwide cohort study (Canadian Task Force classification II-2).
SETTING: Data from Danish national registers on all women undergoing hysterectomy for benign conditions from 1996 to 2015.
PATIENTS: Women aged 18 years and older who underwent hysterectomy for benign disease were stratified into 3 groups according to the hysterectomy approach: abdominal, laparoscopic, or vaginal.
INTERVENTIONS: Hysterectomy.
MEASUREMENTS AND MAIN RESULTS: Eighty-nine thousand nine hundred thirty-one women met the inclusion criteria. Venous thromboembolism (VTE) as a diagnosis or cause of death was identified. The risk of postoperative VTE was examined with Cox proportional hazard models adjusting for age, surgical approach, and relevant comorbidities. The mean age was 49.9, 47.9, and 54.3 years for women with abdominal, laparoscopic, and vaginal hysterectomy, respectively. The crude incidences of VTE within 30 days after hysterectomy were 0.24% (n = 142), 0.13% (n = 12), and 0.10% (n = 21). The most important predictors of VTE were the approach to hysterectomy and a history of thromboembolic disease. In the multivariable analysis, the risk of VTE was significantly reduced with laparoscopic hysterectomy (hazard ratio [HR] = 0.51; 95% confidence interval [CI], 0.28-0.92; p = .03) and vaginal hysterectomy (HR = 0.39; 95% CI, 0.24-0.63; p < .001) when compared with the abdominal procedure. Data on postoperative heparin thromboprophylaxis were available in 53 566 patients, and the adjusted HR was 0.63 (95% CI, 0.42-0.96; p = .03) in patients receiving heparin thromboprophylaxis.
CONCLUSION: The 30-day cumulative incidence of VTE after hysterectomy for benign conditions was low overall (0.19%). Laparoscopic hysterectomy and vaginal hysterectomy carry a lower risk than the abdominal procedure. Postoperative heparin thromboprophylaxis significantly reduces the risk of VTE and should be considered, especially if risk factors are present.
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