Thrombotic disease

This trial tests whether adding laser therapy to standard gum surgery improves treatment of advanced periodontitis. Adults with stage I to III periodontitis who still have deep pockets after initial non-surgical care will receive open flap debridement, a procedure that lifts the …

This study tests whether using a patient's genetic information to choose anti-platelet drugs can lower bleeding risks compared to standard care. About 1,760 high-risk patients receiving a heart stent will be assigned to either a personalized drug plan or usual therapy. The goal i…

This study compares two blood thinners—apixaban (Eliquis) and warfarin (Coumadin)—in 460 people with advanced heart failure who have a HeartMate 3 heart pump. The goal is to see which drug better prevents strokes, pump clots, and serious bleeding. Participants must have had their…

This trial tests three experimental antibodies—REGN9933, REGN7508, and REGN9533—in people with end-stage kidney disease who are on hemodialysis. The goal is to see if these antibodies can safely reduce blood clot risk during dialysis, potentially offering an alternative to standa…

This study tracks how well the FLOWRUNNER Aspiration System removes symptomatic blood clots from veins in the arms or legs during routine care. About 218 adults with deep-vein clots will be followed to see if the device safely restores blood flow and reduces clot-related disabili…

This study tests two experimental drugs, REGN7508 and REGN9933, to see if they can prevent blood clots in people who have a peripherally inserted central catheter (PICC). People with PICCs are at higher risk for venous thromboembolism (VTE), which can be serious. The trial compar…

This study tests a new procedure for people with a completely blocked main portal vein who have had at least two episodes of dangerous variceal bleeding. Doctors will use ultrasound to guide a needle into a vein in the gut, then try to reopen the blocked vein or create a new bypa…

This study tests whether patients with a heart pump (LVAD) can safely stop taking aspirin while continuing warfarin. The goal is to reduce bleeding problems without increasing dangerous clots. About 370 participants will be randomly assigned to receive either aspirin or a placebo…

This study tests whether the blood thinner rivaroxaban can safely improve outcomes in people with liver cirrhosis who have both a blood clot in the portal vein and a high risk of variceal bleeding. About 175 participants will receive rivaroxaban or standard care starting 48 hours…

This pilot study looks at people with a blood clot in the heart (left ventricular thrombus) who have been on blood thinners for at least 3 months. Half will stop their medication and half will continue, to see which approach is safer. The goal is to find the best treatment durati…

This study will compare aspirin tablets to daily injections of low molecular weight heparin (LMWH) for preventing dangerous blood clots in people who break their hip. Over 21,000 patients aged 60 and older across 96 UK hospitals will take part. Hospitals will switch between the t…

Researchers are testing an experimental PET imaging tracer called 18F-S2P to see how well it detects inflamed plaques in people with large-artery atherosclerosis. About 200 adults aged 40 to 80 with suspected atherosclerosis receive an intravenous dose of the tracer and then unde…

This study compares two ways to diagnose bleeding problems during surgery: a quick bedside test (viscoelastic test) and standard lab tests. The goal is to see which method gives faster results, helping doctors treat bleeding sooner. About 210 adults having high-risk surgeries (li…

This study looks at 22 children with congenital heart disease who are getting a blood thinner called heparin. Doctors want to see if taking blood from a central line (a special IV) gives the same results as taking blood from an artery. They will compare three different ways of dr…

This study will measure normal blood clotting values in 240 children under 18 who are having surgery or a procedure with anesthesia. The goal is to establish reference ranges for the Quantra system, a device that checks how well blood clots. This information will help doctors bet…

Heparin-induced thrombocytopenia (HIT) is a rare immune reaction that makes heparin dangerous, yet heart bypass surgery normally depends on heparin to keep the machine from clotting. Doctors at 11 French cardiac surgery centers are reviewing past cases where patients with confirm…

This study is a large international registry that will look back at the medical records of about 1,000 adults who were treated with the AngioVac system, a device that uses suction to remove blood clots, infected tissue, or other unwanted material from the heart and major blood ve…

This observational study will track 87 people who are already scheduled to receive treatment with the Recana Thrombectomy Catheter System for blocked veins in their legs. The goal is to see how safe the device is and how well it works at clearing the blockages during the procedur…

This observational study examines how antiplatelet medications affect platelet function in people over 80 with atrial fibrillation who have received a Watchman implant. Researchers will measure various markers of platelet reactivity before and after treatment to see if clotting r…

This study looks at whether a routine blood test measuring D-dimer levels can predict if the immunotherapy drug cemiplimab will control advanced cutaneous squamous cell carcinoma. Researchers will follow 116 patients starting cemiplimab in regular care, comparing disease control …

This study looks at how well platelets work in patients on a life-support machine called ECMO, which helps people with severe lung or heart problems. The goal is to understand why these patients often have dangerous bleeding. Researchers will measure platelet function over time a…

This study looks at whether a hospital rehab and prosthetic training program helps people who lost a leg due to diabetes or blood vessel disease use their artificial limb regularly. Researchers will review past patient records and follow new patients for up to 6 months after they…

This study aims to find out how often hospitalized patients develop blood clots related to common catheters (PICC, FICC, CICC, and midline). Researchers will use ultrasound to check 500 adults who have had a catheter for at least 7 days. The goal is to better understand how many …

This study will look at 800 patients who had aortic surgery to understand why some develop dangerous blood clots inside the repaired artery. Researchers want to find out how common these clots are, what puts patients at risk, and how they affect recovery. The goal is to improve c…

This study will follow about 2,500 adults with liver cirrhosis to learn who gets dangerous blood clots in the liver's main vein, how these clots affect survival, and whether blood-thinner medications are safe and helpful. Participants receive no experimental treatment—just routin…

This study looks at whether certain natural markers on red blood cells, called Lewis antigens, are more common in people who have had blood clots in their veins. Researchers will test 100 adults with a history of deep vein thrombosis and record their other clot risk factors. The …

This study looks at blood clots removed from 500 stroke patients to understand their composition and how they relate to blood markers, treatment success, and patient recovery. The goal is to learn more about stroke causes and find new ways to dissolve clots. Participants are adul…

This study will collect blood samples from 30,000 adults in the UK with various health conditions, including blood clots, infections, heart disease, diabetes, and more. The samples will be used to develop and fine-tune new diagnostic tests for the cobas® lumira device, which allo…

This study looks back at the medical records of 50 adult ICU patients with COVID-19 who needed a life-support machine called ECMO. The goal is to understand how often bleeding and dangerous blood clots happen, and how blood transfusions and blood thinners affect their care. The f…

This study looks at how artificial sweeteners (saccharin, sucralose) and a natural one (erythritol) affect blood sugar control, blood clotting, and heart disease risk in 80 adults with prediabetes. Participants will be randomly assigned to take one sweetener or water for two week…

This study aims to understand why some people's coronary artery disease gets worse quickly while others' stays stable. Researchers will compare medical history, lab results, and imaging from 52 patients—34 with rapidly progressive disease and 18 with non-rapidly progressive disea…