View clinical trials related to Thrombosis.
Filter by:The purpose of this study is to evaluate blood clots after Percutaneous ASD Closure in different age, sexuality and defective diameter; evaluating the relationship of blood clotting with Occluder, injury of intima and inflammation;comparation of the effect and safety between different anticoagulation after Percutaneous ASD Repair; explore propose an optimal anticoagulation plan.
Reload of high dose statin may have potential for preventing deep vein thrombosis (DVT) in patients on statin undergoing total knee replacement arthroplasty. A body of evidence have been reported that reloading of atorvastatin have efficacy in reducing periprocedural myocardial infarction and contrast induced nephropathy. These effects are considered to be mainly due to their antioxidant anti-thrombotic and anti-inflammatory property. We, therefore, hypothesize that high dose atorvastatin re-loading may prevent DVT.
The purpose of this study is to determine whether adding clopidogrel to aspirin after coronary bypass operation (CABG) improves graft patency, in patients that have preoperatively increased platelet activity(hypercoagulable) and therefore greater risk of graft occlusion( thrombosis).
1. The use of LMWH following open reduction and internal fixation of ankle fractures will reduce the number of thrombi formed. 2. The rates of clinically significant DVT will be equivalent between two groups.
Deep vein thrombosis (DVT)is devastating disease which influencing the mortality and morbidity of patients at-risk like those undergoing orthopedic surgery. Recent publication suggested HMO-co-A reductase inhibitor (statin) may reduce the occurrence rate of venous thromboembolism in apparently healthy persons. The pleiotropic property of statin like antioxidant, antithrombotic, anti-inflammatory may have effect on the positive results. We are investigating whether rosuvastatin is associated with lower incidence of deep vein thrombosis (DVT) in patients undergoing total knee replacement arthroplasty(TKRA)who are at-high risk for developing DVT
Prostaglandin E1 (PGE1 )has been shown to have vasodilatation and anti-thrombosis effects, so it is used by some surgeons after microsurgery to keep the patency of the anastomosed small vessels. However, PGE 1 may also causes some complications, like pleural effusion or deep vein thrombosis. Therefore, it remains uncertain whether a routine use of PGE 1 after head and neck microsurgery is justified. We aim to test the hypothesis that PGE 1 increases postoperative vessel patency rate in patients undergoing head and neck microsurgery, with a comparable complication rate as the control group.
In order to avoid to use a traumatic and iatrogenic examen (phlebography), the purpose of the study is to validate echography doppler in the diagnosis of asymptomatic related catheter related thrombosis.
Background: During the repair process of deep venous thrombosis, capillary formation is seen from day 18 to day 25. Contrast agent investigation is well known to detect small vessels in arterial disease. We intend to use this method to detect early vascularisation in the thrombus, in order to get more information about the evolution of the thrombosis in vivo. Aims of the study: Investigation of a newly diagnosed occluding venous thrombus with duplexsonography, using contrast agent and compare the degree of vascularization in the same patient after 3 weeks and 3 months. The relative signal intensity difference (baseline to peak) of the time intensity curve (TIC) is measured in defined region of interests (ROI). Comparison of the visibility of revascularisation between color duplexsonography, power mode and contrast agent will be done. Method: Patients with venous thrombosis of the proximal limb veins (femoral or popliteal vein) will be investigated with ultrasound agent in supine position. 5 ml of the contrast agent sulfur hexafluoride is given intravenously into a vein of the dorsal foot. The measurements are done in a defined area, where the thrombus is fully occluding in color Doppler investigation. The regions of interest will be the vessel walls and the centre of the thrombus in cross section view. The signal intensities are measured at baseline and peak (in decibel) in the centre and in the peripheral part of the vein. 20 patients with acute deep venous thrombosis will be included in this pilot study and investigated at baseline, after 3 weeks and 3 months. Previously (before contrast agent application), the veins are investigated with color - and power Doppler to test visibility in comparison to the contrast agent investigation.
Patients who have undergone placement of coronary stents require dual antiplatelet therapy with Plavix and aspirin to prevent the serious complication of in-stent thrombosis. Some of these patients will require surgery while on dual antiplatelet therapy. This poses a challenge because being on Plavix is associated with higher risks of perioperative bleeding, but stopping Plavix puts patients at increased risk for in-stent thrombosis. Currently, the ACC/AHA guidelines recommend discontinuation of Plavix five days prior to surgery to prevent bleeding complications. However, there are no universal recommendations for preventing in-stent thrombosis. Some experts recommend the use glycoprotein IIb/IIIa inhibitors (short-acting antiplatelet agents) as "bridging therapy" during the high-risk perioperative period. Although these agents should be beneficial based on theory, there is currently no published data on their effectiveness for this purpose. The current study proposes to evaluate the value of Aggrastat (a short-acting intravenous platelet glycoprotein IIb/IIIa inhibitor) in decreasing the risk of in-stent thrombosis without increasing the risk of perioperative bleeding.
The ATORVO study is designed to determine whether atorvastatin (Lipitor) can improve vision, when compared to placebo