View clinical trials related to Venous Thrombosis.
Filter by:Blood clots that form in the extremities (deep venous thrombosis) and lungs (pulmonary embolus) are feared complications of reconstructive surgery. One in ten patients with symptomatic pulmonary embolus will be dead in 60 minutes. Patients with deep venous thrombosis can develop the post-thrombotic syndrome, known to be a major driver of poor quality of life. These phenomena, broadly known as venous thromboembolism (VTE), have substantial downstream ramifications, and the US Surgeon General and the American Society of Plastic Surgeons (ASPS), among others, have underscored the importance of VTE prevention in surgical patients. Reconstructive surgery, most commonly performed to fix traumatic injuries or defects after cancer excision, often involves borrowing tissue from adjacent or distant areas on the body; reconstructive surgery patients can routinely have surgical injury involving 20% or more of their total body surface area. Injury and resultant inflammation are known to increase metabolism of certain drugs, including those used to prevent VTE after surgery. Enoxaparin is a blood-thinning medication that decreases likelihood of blood clot formation. Previous research has shown that reconstructive surgery patients who are given enoxaparin after surgery are less likely to develop VTE. However, despite receiving of a standard dose of enoxaparin, many patients still develop this life-threatening complication. The investigators believe that patients metabolize enoxaparin differently based on the degree of surgical injury created during reconstruction, and seek to critically examine enoxaparin metabolism in reconstructive surgery patients. The proposed research will evaluate how enoxaparin affects the blood based on standard, ASPS-recommended dosing after reconstructive surgeries; the investigators will also examine whether the extent of surgical injury alters metabolism as well. Enoxaparin effectiveness will be tracked using anti-Factor Xa (aFXa) levels. If subtherapeutic aFXa levels are observed, the study will also design, implement and test a clinical enoxaparin dose-adjustment protocol to achieve appropriate post-operative aFXa levels. Further research based on these data will examine reduction in VTE risk when aFXa-driven enoxaparin dosing is used.
The invesigators seek to devise a strategy for the assessment of Rivaroxaban activity in trauma and Emergency General Surgery (EGS) patients available as point-of-care testing. Thromboelastography (TEG) is a point of care, viscoelastic measurement of coagulation that is widely used in trauma and is viewed by many as superior to standard coagulation studies for the assessment of coagulopathy following injury and may be useful in detecting rivaroxaban effect in trauma and EGS patients to assess the degree of functional factor Xa impairment.
Ongoing registration of deep venous obstructive disease patients treated by means of percutaneous transluminal angioplasty (PTA) and stenting with or without endophlebectomy (surgical desobstruction, also termed endovenectomy) of the common femoral vein and/or arteriovenous fistula creation.
To investigate the incidence of pre- and early postoperative deep venous thrombosis in patients undergoing hepatobiliopancreatic surgery, as well as potential corresponding risk factors with special attention to circulating tumor cells.
To evaluate whether there is a difference in symptomatic thromboembolism events in the subset of patients with a history of, or risk factors for thromboembolic disease for topically applied tranexamic acid in total joint arthroplasty.
The purpose of this study is to determine the effect and safety of anticoagulation after endoscopic therapy in cirrhotic patients with portal vein thrombosis and to explore its effect on long-term rebleeding rate and mortality.
Anticoagulant therapy is generally recommended for all patients presenting with acute symptomatic splanchnic vein thrombosis, starting with either low-molecular weight heparin (LMWH) or unfractionated heparin and continuing with the vitamin K antagonists in most patients. Rivaroxaban is approved for the treatment of deep vein thrombosis and pulmonary embolism, but no studies have assessed the safety of rivaroxaban in the setting of splanchnic vein thrombosis. The investigators aim to collect prospective information on the safety of rivaroxaban in a pilot cohort of 100 patients with acute splanchnic vein thrombosis without liver cirrhosis.
Hospitalization in pregnancy and childbirth greatly increases the thromboembolic risk of these patients. The application of a protocol for assessing the risk of VTE reduces mortality and morbidity of these phenomena.
Adverse events are frequent in Neonatal Intensive Care Units' (NICU) patients and account for a high morbidity and mortality. Possible severe adverse events are central line associated bloodstream infections (CLABSI), ventilator and catheter associated adverse events and medication errors. Severity of the patient's outcome after an adverse event can be classified using the National Coordinating Council for Medication Error Reporting and Preventing (NCC MERP) Index for categorizing medication errors. The study will test the hypothesis that rates of adverse events in NICU patients will be reduced by the implementation of an educational program for the NICU caregivers (nurses and physicians), consisting of strategies for recognizing and preventing adverse events in their unit. These strategies will be oriented to prevent CLABSI, medication errors, skin and nasal complications and ventilator and catheter-associated adverse events. This trial has a stepped wedge cluster design, in which the NICUs from 12 hospitals in France will be randomized to the timing of implementation of the educational program. In order to describe the adverse events occurring during the study period, an anonymous voluntary adverse event reporting system will be provided to the caregivers of the participating units. A nested study will examine how caregivers communicate with the patients' parents in case of adverse event (disclosure or not, and caregivers' reasons). The rates of adverse events will be measured retrospectively using a neonatal NICU trigger tool.
Observational. Retrospective cohort.