Active clinical trials for "Thromboembolism"

TACT is a "real world" randomized controlled trial of tecarfarin, a novel vitamin K antagonist, vs. warfarin. The quality of anticoagulation control will be compared for the two groups of subjects who require chronic oral anticoagulation for a broad panel of indications.

AECOPD increases the risk of VTE.VTE prevention is a long way to go for high-risk VTE patients in China.The incidence of AECOPD complicated with VTE in Asian population is high and the mortality rate is high.Rivaroxaban, a new oral anticoagulant, has been widely used in the treatment and prevention of VTE.However the question about the efficacy and safety of new oral anticoagulant compared with LMWHs for the prevention of symptomatic VTE and VTE-related death post-hospital discharge in high-risk AECOPD patients is still unknown. Thus this study is to evaluate if the prophylactic anticoagulation effect by Rivaroxaban is non-inferiority than Enoxaprine in high risk AECOPD and to evaluate the safety of using Rivaroxaban to prevent VTE in high risk AECOPD comparing with Enoxaprine.

This study is an international, multicenter, academically sponsored, observational study, that focusses on fertile female patients with proven symptomatic deep vein thrombosis of the legs (DVT) or acute pulmonary embolism (PE). The incidence and severity of abnormal menstrual bleeding will be assessed for each menstrual period and correlated to quality of life. Causes of abnormal menstrual bleeding other than active anticoagulant treatment will be assessed. Treatment of abnormal menstrual bleeding (all within routine clinical care) will be evaluated for efficacy and safety.

The primary objective of this study is to verify, through a randomized, blinded, parallel clinical trial, the efficacy of bovine heparin from Bergamo Laboratory ACTIPARIN ® product when compared to porcine heparin APP Pharmaceutical in patients undergoing surgery cardiovascular disease and who require cardiopulmonary bypass, through the control of hemostasis during and after surgery, based on measurements of markers of coagulation ACT, aPTT, anti-Xa heparin levels and the excessive blood loss (hemorrhage) after the end of surgery.

There is a clear link between obstructive sleep apnea (OSA) and cardiovascular disease. However, there has been no clear link between OSA and venous thromboembolism (VTE). The objective of this study is to evaluate such a link.

This study was designed to assess the safety and efficacy of GW813893 in the prophylaxis of VTE following TKR and to provide evidence to enable the selection of the appropriate dose(s) and dose regimen of GW813893 for future investigation.

This trial aims at determining if dabigatran is effective in the treatment of malignancy associated VTE. Tolerance and safety of dabigatran will also be assessed. This is a single armed trial of dabigatran in patients with malignancy associated VTE. The target recruitment is 99 consecutive patients with active malignancy and newly diagnosed VTE (deep vein thrombosis and/or pulmonary embolism) in Queen Mary Hospital. Tinzaparin 175 iu/kg daily will be started after the diagnosis of VTE is confirmed (duplex Doppler ultrasonography for deep vein thrombosis, and computed tomography for pulmonary embolism), and a written consent is obtained. Patients will be switched to dabigatran 150mg twice daily from day 6 onwards. The first dose of dabigatran will be given within 2 hours before the time that the next dose of tinzaparin would have been due. Anticoagulation will be continued as long as malignancy is active. If patients achieve a complete remission of their underlying malignancies, dabigatran will be continued for 6 months further.

Venous Thromboembolic Disease (VTE) in SCI patients is very common, its prevalence is 60 to 80% against 10-20% in the general population. The risk of VTE is very important in the first weeks after spinal cord injury, and then declines with a prevalence of VTE slightly higher than the general population after 12 weeks. However there is no prospective study of incidence of VTE in SCI patients after 3 months. The investigators wish to conduct such a study during the year following spinal cord injury with performing venous Doppler ultrasound of the lower limbs 6, 9 and 12 months of the initial injuryassociated with a standardized clinical assessment, to know the incidence of VTE and determine prognostic factors for VTE.

Standard weight-based IV heparin for normal weight patients is based on actual body weight (ABW). However, no well-defined guidelines have been established for patients considered to be obese or morbidly obese. In current practice, the calculated ABW based heparin initial bolus dose and infusion rates are quite high, and therefore often not used for obese/morbidly obese patients for fear of bleeding. Heparin is distributed in the body approximately the same as blood and does not get distributed to adipose tissue. There are some studies suggesting that lean body weight (LBW) might be a better basis for dosing heparin. LBW is a calculated weight that excludes the weight of fat. The investigators hypothesize that intravenous heparin dosing based on the Lean body weight of obese/morbidly obese patients would be safe and effective in achieving a therapeutic level of heparin in 24 hours compared to the usual practice in this patient population.

Inferior vena cava (IVC) filter is an important therapeutic device used in the management of venous thrombo-embolism (VTE) in patients that are contra-indicated for anti-coagulation therapy. While there has been significant increase in the use of filters , unfortunately there are no standardized collection of data to track, compare outcomes, report safety and efficacy.