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BackgroundThe treatment of distal (below the knee) deep vein thrombosis (DVT) is not clearly established. Distal DVT can either be treated with anticoagulation, or monitored with close follow-up to detect progression to the proximal veins (above the knee), which requires anticoagulation. Proponents of this monitoring strategy base their decision to withhold anticoagulation on the fact that progression is rare and most people can be spared from potential bleeding and other adverse e ects of anticoagulation. ObjectivesTo assess the e ects of di erent treatment interventions for people with distal (below the knee) deep vein thrombosis (DVT). Search methodsThe Cochrane Vascular Information Specialist searched the Cochrane Vascular Specialised Register, CENTRAL, MEDLINE, Embase and CINAHL databases and World Health Organization International Clinical Trials Registry Platform and ClinicalTrials.gov trials registers to 12 February 2019. We also undertook reference checking to identify additional studies. Selection criteriaRandomised controlled trials (RCTs) for the treatment of distal DVT. Data collection and analysisTwo review authors independently selected trials and extracted data. We resolved disagreements by discussion. Primary outcomes of interest were recurrence of venous thromboembolism (VTE), DVT and major bleeding and follow up ranged from three months to two years. We performed fixed-e ect model meta-analyses with risk ratio (RRs) and 95% confidence intervals (CIs). We assessed the certainty of the evidence using GRADE. Main resultsWe identified eight RCTs reporting on 1239 participants. Five trials randomised participants to anticoagulation for up to three months versus no anticoagulation. Three trials compared anticoagulation treatment for di erent time periods. Anticoagulant compared to no intervention or placebo for distal DVT treatmentAnticoagulation with a vitamin K antagonist (VKA) reduced the risk of recurrent VTE during follow-up compared with participants receiving no anticoagulation (RR 0.34, 95% CI 0.15 to 0.77; 5 studies, 496 participants; I 2 = 3%; high-certainty evidence), and reduced the risk of Treatment of distal deep vein thrombosis (Review)

Objective: To provide an updated estimate of the global prevalence of CVD and to comprehensively evaluate risk factors associated with this condition. Background: CVD is an important cause of morbidity internationally, but the global burden of this condition is poorly characterized. The burden of CVD must be better characterized to optimize service provision and permit workforce planning to care for patients with different stages of CVD. Methods: A systematic search in Ovid MEDLINE and Embase (1946-2019) identified 1271 articles. Full-text, English language articles reporting on the epidemiology of CVD in a general adult population were included. Data extraction was performed by 2 independent reviewers, in accordance with a preregistered protocol (PROSPERO: CRD42019153656). STATA and Review Manager were used for quantitative analysis. A crude, unadjusted pooled prevalence was calculated for each Clinical (C) stage in the Clinical, Etiologic, Anatomic, Pathophysiologic classification and across different geographical regions. Qualitative analysis was performed to evaluate associated risk factors in CVD. Results: Thirty-two articles across 6 continents were identified. Nineteen studies were included in the overall pooled prevalence for each Clinical (C) stage; pooled estimates were:

BackgroundThe treatment of distal (below the knee) deep vein thrombosis (DVT) is not clearly established. Distal DVT can either be treated with anticoagulation, or monitored with close follow-up to detect progression to the proximal veins (above the knee), which requires anticoagulation. Proponents of this monitoring strategy base their decision to withhold anticoagulation on the fact that progression is rare and most people can be spared from potential bleeding and other adverse e ects of anticoagulation. ObjectivesTo assess the e ects of di erent treatment interventions for people with distal (below the knee) deep vein thrombosis (DVT). Search methodsThe Cochrane Vascular Information Specialist searched the Cochrane Vascular Specialised Register, CENTRAL, MEDLINE, Embase and CINAHL databases and World Health Organization International Clinical Trials Registry Platform and ClinicalTrials.gov trials registers to 12 February 2019. We also undertook reference checking to identify additional studies. Selection criteriaRandomised controlled trials (RCTs) for the treatment of distal DVT. Data collection and analysisTwo review authors independently selected trials and extracted data. We resolved disagreements by discussion. Primary outcomes of interest were recurrence of venous thromboembolism (VTE), DVT and major bleeding and follow up ranged from three months to two years. We performed fixed-e ect model meta-analyses with risk ratio (RRs) and 95% confidence intervals (CIs). We assessed the certainty of the evidence using GRADE. Main resultsWe identified eight RCTs reporting on 1239 participants. Five trials randomised participants to anticoagulation for up to three months versus no anticoagulation. Three trials compared anticoagulation treatment for di erent time periods. Anticoagulant compared to no intervention or placebo for distal DVT treatmentAnticoagulation with a vitamin K antagonist (VKA) reduced the risk of recurrent VTE during follow-up compared with participants receiving no anticoagulation (RR 0.34, 95% CI 0.15 to 0.77; 5 studies, 496 participants; I 2 = 3%; high-certainty evidence), and reduced the risk of Treatment of distal deep vein thrombosis (Review)

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