Congenital arteriovenous fistula
MONDO:0020296A congenital vascular disorder characterized byan abnormal connection between an artery and a vein, appearing as varicose veins with port wine discoloration, leading to a bypass of the capillary bed. Signs and symptoms include palpable continuous thrill in the dilated vessels, continuous machinery murmur with systolic accentuation, collapsing arterial pulse, Nicoladoni Branham sign, as well as local gigantism and hot ulcers due to hypoxia, among others.
Also known as: congenital arteriovenous shunt
190 clinical trials for this condition and its sub-types.
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Broader categories
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New weekly shot could help severely obese heart patients shed pounds
Disease control OngoingThis Phase 3 study tests a weekly injection called retatrutide in about 1,946 people with severe obesity (BMI ≥35) and established heart disease. The goal is to see if it helps with weight loss and improves heart-related health measures over 113 weeks compared to a placebo. Parti…
Phase: PHASE3 • Sponsor: Eli Lilly and Company • Aim: Disease control
Last updated Jun 27, 2026 12:37 UTC
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Could a weekly shot slash heart attack risk? major trial underway
Disease control OngoingThis study tests whether a weekly injection of CagriSema (a combination of two drugs) can reduce the risk of heart attacks, strokes, and other heart-related events in people with established cardiovascular disease. About 7,100 participants will receive either CagriSema or a place…
Phase: PHASE3 • Sponsor: Novo Nordisk A/S • Aim: Disease control
Last updated Jun 27, 2026 12:35 UTC
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New balloon could save dialysis patients from repeat surgeries
Disease control OngoingThis study tests a special balloon coated with the drug paclitaxel to treat blockages in arm fistulas used for dialysis. The balloon is inflated to open the narrowed blood vessel and release the drug to help keep it open. Researchers will check if the fistula stays open without n…
Phase: NA • Sponsor: Boston Scientific Corporation • Aim: Disease control
Last updated Jun 27, 2026 12:30 UTC
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New drug aims to cut heart attacks in High-Risk patients
Disease control OngoingThis phase 3 trial tests whether a monthly injection of pelacarsen can reduce major heart problems like heart attacks and strokes in people with high levels of Lp(a), a genetic risk factor. Over 8,000 participants with existing heart disease are being followed for several years. …
Phase: PHASE3 • Sponsor: Novartis Pharmaceuticals • Aim: Disease control
Last updated Jun 27, 2026 12:29 UTC
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Can tighter blood pressure control save hearts in diabetes? massive trial aims to find out
Disease control OngoingThis large study is testing whether a lower blood pressure target can reduce major heart problems like heart attacks, strokes, and heart failure in people with type 2 diabetes. About 9,500 participants with high blood pressure and high cardiovascular risk are being randomly assig…
Phase: NA • Sponsor: Hospital Israelita Albert Einstein • Aim: Disease control
Last updated Jun 27, 2026 12:01 UTC
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New balloon could help dialysis patients avoid repeat procedures
Disease control OngoingThis study looks at a special balloon coated with medicine that is used to open up blocked dialysis fistulas in the arm. The goal is to see if it keeps the fistula working longer and safely. About 213 people took part in this global study.
Phase: NA • Sponsor: C. R. Bard • Aim: Disease control
Last updated Jun 27, 2026 11:02 UTC
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Gut bacteria capsules may shield heart surgery patients from organ damage
Disease control ENROLLING_BY_INVITATIONThis study tests whether giving patients capsules containing gut bacteria (called Probacine) before and after heart surgery can reduce gut injury and organ failure. Researchers will enroll 500 adults undergoing cardiovascular surgery. The goal is to see if changing the gut microb…
Phase: NA • Sponsor: Nanjing Medical University • Aim: Disease control
Last updated Jun 27, 2026 08:09 UTC
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New stent aims to keep dialysis lifelines flowing
Disease control OngoingThis study looks at a special stent called WRAPSODY used to treat narrowed or blocked veins in people on dialysis. About 500 participants will be followed for up to 24 months to see how well the stent keeps the access site open and safe. The goal is to improve long-term dialysis …
Sponsor: Merit Medical Systems, Inc. • Aim: Disease control
Last updated Jun 27, 2026 08:03 UTC
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New wrist surgery could make dialysis easier for kidney patients
Disease control OngoingThis study tests a new surgical method called RADAR for creating blood vessel connections needed for dialysis in 200 people with end-stage kidney disease. The goal is to see if this technique leads to fewer blockages and better long-term function compared to the standard approach…
Phase: NA • Sponsor: Centre Hospitalier Universitaire de Nice • Aim: Disease control
Last updated Jun 27, 2026 08:01 UTC
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New balloon treatment aims to keep dialysis access open longer
Disease control OngoingThis study is testing a special balloon coated with a drug to treat blockages in the blood vessels used for dialysis. The balloon is inflated inside the narrowed area to open it up and release medication that may help keep it from closing again. Researchers are following 240 adul…
Sponsor: Medtronic • Aim: Disease control
Last updated Jun 27, 2026 07:55 UTC
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Leg movement may predict heart risk in seniors
Diagnosis OngoingThis study explores whether a simple, non-invasive leg movement test can measure blood vessel health in older adults. Researchers will use ultrasound to track blood flow changes after a passive leg movement, comparing young healthy people and older patients undergoing heart tests…
Sponsor: VA Office of Research and Development • Aim: Diagnosis
Last updated Jun 27, 2026 08:01 UTC
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Massive study tests if daily pills can ward off cancer and heart attacks
Prevention OngoingThis large study tested whether taking daily vitamin D3 and omega-3 (fish oil) supplements can lower the risk of developing cancer, heart disease, or stroke. Over 25,000 healthy older adults (men 50+, women 55+) took the supplements or placebos for about 5 years. The goal is to s…
Phase: PHASE3 • Sponsor: Brigham and Women's Hospital • Aim: Prevention
Last updated Jun 27, 2026 07:56 UTC
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Heart rehab gets personal: new program targets Women's sexual Well-Being
Symptom relief OngoingThis study tests a nurse-led education program designed to help women in cardiac rehab address sexual concerns after a heart event. Sixty-six women will be randomly assigned to either the program or usual care. The goal is to see if the program improves sexual function, mood, and…
Phase: NA • Sponsor: Hospital Universitario Virgen Macarena • Aim: Symptom relief
Last updated Jun 27, 2026 12:33 UTC
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Kidney dialysis drug study pulled before it started
Knowledge-focused TerminatedThis study was designed to see how a low dose of bevacizumab (Avastin) behaves in the body and whether it safely lowers a certain protein (VEGF-A) in people with kidney failure on dialysis. The goal was to gather information for a future trial on preventing dialysis access failur…
Phase: EARLY_PHASE1 • Sponsor: Mayo Clinic • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:02 UTC
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Heart Patients' hidden danger: risky drug mixes under the microscope
Knowledge-focused OngoingThis study tracks 120 adults with heart disease and at least two other long-term illnesses to see how often dangerous drug interactions happen. Researchers check medications, including over-the-counter and herbal products, and follow participants for a year. The goal is to unders…
Sponsor: National Medical Research Center for Therapy and Preventive Medicine • Aim: Knowledge-focused
Last updated Jun 27, 2026 14:00 UTC
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Dialysis access anesthesia study pulled before starting
Knowledge-focused TerminatedThis study was designed to see if different types of anesthesia could help a surgically created blood vessel connection (called a fistula) work better for dialysis patients. The plan was to compare three methods: a nerve block in the armpit, a nerve block in the neck, and local a…
Phase: NA • Sponsor: McMaster University • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:07 UTC
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Heart patients face bleeding and clot risks after joint surgery – new study investigates
Knowledge-focused OngoingThis study tracks over 1,700 heart patients who had hip or knee replacement surgery. Researchers want to see how often bleeding or blood clots happen in the months after surgery. The goal is to find better ways to prevent these complications.
Sponsor: I.M. Sechenov First Moscow State Medical University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:32 UTC
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Florida launches brain disease biobank to fuel future discoveries
Knowledge-focused OngoingThis study is creating a statewide collection of blood samples and medical information from people with various brain blood vessel diseases, such as stroke and dementia. The goal is to build a resource that scientists can use in future research to better understand and potentiall…
Sponsor: Mayo Clinic • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:32 UTC
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200,000 heart patients enrolled in massive 5-Year fitness tracking study
Knowledge-focused ENROLLING_BY_INVITATIONThis study will observe 200,000 Chinese adults with heart disease to see how their heart and lung function changes over 5 years. Participants will take a special exercise test to measure their fitness. Researchers hope to find better ways to predict future heart problems like hea…
Sponsor: Guangdong Provincial People's Hospital • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:24 UTC
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Heart disease study aims to unlock genetic secrets of dilated cardiomyopathy
Knowledge-focused OngoingThis study follows 2000 people with dilated cardiomyopathy (a weakened, enlarged heart) over several years to learn how genetics and heart scarring affect the disease. Participants give blood for genetic testing and have heart MRI scans. The goal is to improve diagnosis and pave …
Sponsor: Imperial College London • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:00 UTC
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ICU stay throws body clocks out of sync, new study reveals
Knowledge-focused OngoingThis study looks at how being in a hospital intensive care unit (ICU) after heart surgery affects your body's natural sleep-wake cycle. Researchers will track sleep patterns and thinking ability in 15 adults to see if disrupted rhythms slow down recovery. The goal is to understan…
Sponsor: University of Pennsylvania • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:13 UTC
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Study on faster recovery after heart procedure pulled before starting
Knowledge-focused TerminatedThis study aimed to see if using a special pad along with a standard closure device could help patients get out of bed sooner after a heart catheterization. It was planned for adults having the procedure through the groin. However, the study was withdrawn before any participants …
Phase: NA • Sponsor: University of California, Los Angeles • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:05 UTC
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New study aims to predict swallowing trouble after heart surgery
Knowledge-focused OngoingThis study follows 347 heart surgery patients to understand why some develop swallowing problems (dysphagia). Researchers will use special camera tests to watch how patients swallow and look for risk factors. The goal is to create simple tools that doctors can use at the bedside …
Sponsor: University of Florida • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:54 UTC
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10,000 heart scans could unlock secrets of cardiovascular disease
Knowledge-focused OngoingThis study is following 10,000 adults who are having a heart MRI for medical reasons. Researchers want to see if the MRI results can help predict who will have heart problems in the future, like heart attacks or heart failure. The goal is to better understand how MRI scans can gu…
Sponsor: Manchester University NHS Foundation Trust • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:52 UTC