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
57 clinical trials for this condition and its sub-types.
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Broader categories
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Dialysis dilemma: catheter or fistula for the elderly?
Disease control Not yet recruitingThis study compares two common ways to access the blood for dialysis: a tunneled catheter (a tube placed in a large vein) versus a surgically created fistula (connecting an artery to a vein). The trial will enroll 220 patients aged 60 or older (or younger but with multiple health…
Phase: NA • Sponsor: Medical University of Vienna • Aim: Disease control
Last updated Jun 27, 2026 14:00 UTC
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Super-Strength balloon aims to keep dialysis lifelines open
Disease control Not yet recruitingThis early study tests a new ultra-high-pressure balloon designed to widen narrowed blood vessels in people on dialysis. About 35 participants will receive the balloon treatment to see if it safely restores blood flow and improves dialysis access. The goal is to fix the narrowing…
Phase: NA • Sponsor: Cardionovum GmbH • Aim: Disease control
Last updated Jun 27, 2026 08:09 UTC
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New coil device aims to stop bleeding without surgery
Disease control Not yet recruitingThis study tests a special coil device designed to block abnormal blood vessels in the arms or legs. The device is inserted through a small tube and placed into the target vessel to stop blood flow. About 139 people with conditions like bleeding, malformed vessels, or aneurysms w…
Phase: NA • Sponsor: Suzhou Zenith Vascular Scitech Co., Ltd. • Aim: Disease control
Last updated Jun 26, 2026 14:04 UTC
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Could a simple breathing pattern take the sting out of dialysis?
Symptom relief Not yet recruitingThis study tests whether a 4-7-8 breathing exercise can reduce pain when needles are inserted into the arm for hemodialysis. About 80 adults on dialysis will either learn the breathing technique or receive standard care. The goal is to see if this easy, drug-free method makes the…
Phase: NA • Sponsor: Izmir Kavram Vocational School • Aim: Symptom relief
Last updated Jul 17, 2026 00:00 UTC
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Wearable listens to dialysis veins: could it predict problems?
Knowledge-focused Not yet recruitingThis early study tests a wearable device that listens to the sound of blood flow in the arm of people on dialysis. The goal is to see if the device can accurately measure the same signals as a standard stethoscope. Six adults with mature fistulas will wear the device weekly for 8…
Phase: NA • Sponsor: Mario Negri Institute for Pharmacological Research • Aim: Knowledge-focused
Last updated Jun 27, 2026 08:11 UTC