Physical activity and risk of venous thromboembolism: systematic review and meta-analysis of prospective cohort studies

AbstractThe inverse association between physical activity and arterial thrombotic disease is well established. Evidence on the association between physical activity and venous thromboembolism (VTE) is divergent. We conducted a systematic review and meta-analysis of published observational prospective cohort studies evaluating the associations of physical activity with VTE risk. MEDLINE, Embase, Web of Science, and manual search of relevant bibliographies were systematically searched until 26 February 2019. Extracted relative risks (RRs) with 95% confidence intervals (CIs) for the maximum versus minimal amount of physical activity groups were pooled using random effects meta-analysis. Twelve articles based on 14 unique prospective cohort studies comprising of 1,286,295 participants and 23,753 VTE events were eligible. The pooled fully-adjusted RR (95% CI) of VTE comparing the most physically active versus the least physically active groups was 0.87 (0.79 –0.95). In pooled analysis of 10 studies (288,043 participants and 7069 VTE events) that reported risk estimates not adjusted for body mass index (BMI), the RR (95% CI) of VTE was 0.81 (0.70–0.93). The associations did not vary by geographical location, age, sex, BMI, and methodological quality of studies. There was no evidence of publication bias among contributing studies. Pooled observational prospective cohort studies support an association between regular physical activity and low incidence of VTE. The relatio...
Source: European Journal of Epidemiology - Category: Epidemiology Source Type: research

Related Links:

ConclusionIncidence of complications is higher when a graft is used over a native AVF. However, close surveillance and prompt intervention can lead to multiple successful salvage procedures thus prolonging the lifespan of the graft. As in our case we were able to prolong the lifespan of the AVG with multiple successful interventions.
Source: International Journal of Surgery Case Reports - Category: Surgery Source Type: research
Authors: Suzuki-Inoue K Abstract Patients with cancer have an increased risk of thromboembolism, which is the second leading cause of death in these patients. Several mechanisms of the prothrombotic state in these patients have been proposed. Among them are a platelet activation receptor, C-type lectin-like receptor 2 (CLEC-2), and its endogenous ligand podoplanin, which are the focus of this review. CLEC-2 is almost specifically expressed in platelets/megakaryocytes in humans. A membrane protein, podoplanin is expressed in certain types of cancer cells, including squamous cell carcinoma, brain tumor, and osteosarc...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Stein BL, Martin K Abstract Thrombotic and hemorrhagic complications are prevalent in patients with essential thrombocythemia, polycythemia vera, and myelofibrosis. Given the impact on morbidity and mortality, reducing the risk of thrombosis and/or hemorrhage is a major therapeutic goal. Historically, patients have been risk stratified on the basis of traditional factors, such as advanced age and thrombosis history. However, multiple factors contribute to the thrombotic tendency, including gender, mutational profile, inflammatory stress, and abnormal cell adhesion. Management includes cardiovascular risk r...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Al-Samkari H, Connors JM Abstract The association between malignancy and thrombosis has been recognized for over a century and a half. Patients with cancer have an elevated risk of both initial and recurrent venous thromboembolism (VTE) compared with patients without cancer owing to cancer- and patient-specific factors. Recurrent VTE is common despite anticoagulation, presenting additional management challenges. Patients with cancer also have an increased risk of bleeding when on anticoagulants compared with patients without cancer. This bleeding risk is heightened by the thrombocytopenia common in patient...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Sarode R Abstract Direct oral anticoagulants (DOACs) are increasingly used in the treatment and prophylaxis of thromboembolism because of several advantages over vitamin K antagonists, including no need for laboratory monitoring. However, it has become increasingly important in certain clinical scenarios to know either actual DOAC concentration (quantitative) or presence of DOAC (qualitative). These clinical conditions include patients presenting with major bleeding or requiring urgent surgery who may need a reversal or hemostatic agent, extremes of body weight, failed therapy, etc. Prothrombin time and ac...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Cohen AT, Hunt BJ Abstract The direct oral anticoagulants (DOACs) have transformed the management of thrombotic disorders. Large clinical trials have demonstrated that DOACs can replace vitamin K antagonists (VKAs) in the 2 existing major indications for anticoagulation: the prevention of stroke in atrial fibrillation and the acute treatment and secondary prevention of venous thromboembolism (VTE); this literature is widely known. In this article, we will concentrate on the less well-discussed benefits of the use of DOACs-using low doses as primary and secondary prophylaxis in both venous and arterial thro...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Muffly L, Curran E Abstract Observational findings demonstrating improved survival for younger adults following pediatric, as opposed to adult, acute lymphoblastic leukemia (ALL) regimens have been translated into international, prospective multicenter clinical trials testing the pediatric regimen in young adult ALL. The results of these studies confirm the feasibility of delivering the pediatric regimen in the adult oncology setting and establish the superiority of this approach relative to historical adult cooperative group regimen results. Specific toxicities, including thrombosis, hepatotoxicity, and o...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Hisada Y, Mackman N Abstract Cancer patients have an increased risk of venous thromboembolism (VTE). The rate of VTE varies with cancer type, with pancreatic cancer having one of the highest rates, suggesting that there are cancer type-specific mechanisms of VTE. Risk assessment scores, such as the Khorana score, have been developed to identify ambulatory cancer patients at high risk of VTE. However, the Khorana score performed poorly in discriminating pancreatic cancer patients at risk of VTE. Currently, thromboprophylaxis is not recommended for cancer outpatients. Recent clinical trials showed that facto...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: James AH Abstract This is the obstetrician's view on 3 different clinical scenarios involving bleeding and thrombotic disorders. In the first scenario, an 18 year old with a history of heavy menstrual bleeding since menarche presents with abdominal pain and ultrasound findings suggestive of a hemorrhagic ovarian cyst. The association with an underlying bleeding disorder is recognized. The goals of management, which are controlling hemorrhage and preserving fertility, are stated. Ovarian suppression, the most effective method to prevent recurrent hemorrhagic ovarian cysts, is outlined. Long-term management ...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
Authors: Peterson EA, Lee AYY Abstract Malignancy is associated with a high risk of venous thromboembolism (VTE), and treatment with anticoagulant therapy is associated with a high risk of bleeding. Thus, accurate and timely VTE diagnosis in cancer patients is essential for identifying individuals who would benefit from anticoagulant therapy and for avoiding unnecessary treatment that can cause anticoagulant-related bleeding. The approach to the diagnosis of VTE in non-cancer patients involves a stepwise process beginning with an assessment of the pretest probability (PTP) of VTE using a validated clinical predicti...
Source: Hematology ASH Education Program - Category: Hematology Tags: Hematology Am Soc Hematol Educ Program Source Type: research
More News: Epidemiology | Science | Study | Thrombosis