Research and practice in thrombosis and haemostasis · 2024
Safety and efficacy of anticoagulant treatment in patients with ovarian vein thrombosis: a systematic review and meta-analysis of observational studies.
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Riva Nicoletta, Muscat-Baron Lorna, Vassallo Carine, Ageno Walter, Rottenstreich Amihai, Sauvé Nadine, Wysokinski Waldemar E, Goldberg Gary L, Salomon Ophira, Labropoulos Nicos, Foulon Arthur, AlSheef Mohammed, Gatt Alex, Calleja-Agius Jean
Аннотация
BACKGROUND: The role of anticoagulation in ovarian vein thrombosis (OVT) is uncertain.
OBJECTIVES: We aimed to evaluate safety and efficacy of anticoagulant treatment in OVT patients.
METHODS: A systematic search was conducted in MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials databases up to April 2024. Eligible studies included randomized controlled trials and observational studies enrolling at least 10 adult patients with objectively diagnosed OVT and treated with any anticoagulants. The protocol was prospectively registered in the International Prospective Register of Systematic Reviews (CRD42021270883).
RESULTS: We included 17 observational studies (621 anticoagulated and 376 nonanticoagulated OVT patients); 9 studies enrolled mainly pregnancy/puerperium-related OVT. Most patients received heparins alone (45.7%) or proceeded to vitamin K antagonists (39.2%). The average treatment duration was ≤3 months in 8 studies (47.1%), >3 to ≤6 months in 6 studies (35.3%), and >6 months in 3 studies (17.6%). In treated patients, mortality rate was 2.43% (95% CI, 0.54%-5.41%; I2 = 53.8%; 12/406 patients; 13 studies), major bleeding was 1.27% (95% CI, 0.48%-2.38%; I2 = 2.5%; 7/583 patients; 15 studies), recurrent venous thromboembolism (VTE) was 3.49% (95% CI, 1.12%-6.95%; I2 = 63.5%; 22/482 patients; 15 studies), and vessel recanalization was 89.4% (95% CI, 74.6%-98.6%; I2 = 80.6%; 163/184 patients; 8 studies). The rate of recurrent VTE in untreated patients was 8.65% (95% CI, 2.61%-17.35%); however, the difference compared with treated patients was not statistically significant (risk ratio, 0.70; 95% CI, 0.36-1.37). At subgroup analyses, the rates of major bleeding and recurrent VTE were 0.80% (95% CI, 0.0-2%.17%) and 3.81% (95% CI, 0.42%-9.63%) in pregnancy/puerperium-related OVT, respectively, and 1.12% (95% CI, 0.32%-2.34%) and 1.78% (95% CI, 0.62%-3.46%), respectively, when analyzing only full-text studies.
CONCLUSION: There is paucity of literature regarding OVT. Our results suggest that anticoagulation is associated with low rates of major bleeding and recurrent VTE.
OBJECTIVES: We aimed to evaluate safety and efficacy of anticoagulant treatment in OVT patients.
METHODS: A systematic search was conducted in MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials databases up to April 2024. Eligible studies included randomized controlled trials and observational studies enrolling at least 10 adult patients with objectively diagnosed OVT and treated with any anticoagulants. The protocol was prospectively registered in the International Prospective Register of Systematic Reviews (CRD42021270883).
RESULTS: We included 17 observational studies (621 anticoagulated and 376 nonanticoagulated OVT patients); 9 studies enrolled mainly pregnancy/puerperium-related OVT. Most patients received heparins alone (45.7%) or proceeded to vitamin K antagonists (39.2%). The average treatment duration was ≤3 months in 8 studies (47.1%), >3 to ≤6 months in 6 studies (35.3%), and >6 months in 3 studies (17.6%). In treated patients, mortality rate was 2.43% (95% CI, 0.54%-5.41%; I2 = 53.8%; 12/406 patients; 13 studies), major bleeding was 1.27% (95% CI, 0.48%-2.38%; I2 = 2.5%; 7/583 patients; 15 studies), recurrent venous thromboembolism (VTE) was 3.49% (95% CI, 1.12%-6.95%; I2 = 63.5%; 22/482 patients; 15 studies), and vessel recanalization was 89.4% (95% CI, 74.6%-98.6%; I2 = 80.6%; 163/184 patients; 8 studies). The rate of recurrent VTE in untreated patients was 8.65% (95% CI, 2.61%-17.35%); however, the difference compared with treated patients was not statistically significant (risk ratio, 0.70; 95% CI, 0.36-1.37). At subgroup analyses, the rates of major bleeding and recurrent VTE were 0.80% (95% CI, 0.0-2%.17%) and 3.81% (95% CI, 0.42%-9.63%) in pregnancy/puerperium-related OVT, respectively, and 1.12% (95% CI, 0.32%-2.34%) and 1.78% (95% CI, 0.62%-3.46%), respectively, when analyzing only full-text studies.
CONCLUSION: There is paucity of literature regarding OVT. Our results suggest that anticoagulation is associated with low rates of major bleeding and recurrent VTE.