Heyde Syndrome: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Heyde Syndrome?
Heyde syndrome is usually managed by a cardiologist, a heart doctor, working with a gastroenterologist, a doctor who treats the digestive system. Care often takes a team. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is Heyde syndrome?
Heyde syndrome links three problems. The first is aortic stenosis, a problem with the aortic valve of the heart. The second is bleeding from angiodysplasia, which means abnormal small blood vessels in the digestive tract. The third is acquired von Willebrand syndrome, a bleeding problem caused by a loss of a protein that helps blood clot.
It mostly affects older adults, usually people over 65.
Symptoms
Bleeding in the digestive tract is the main problem. It can range from no symptoms to:
- Vomiting blood, which needs emergency care.
- Bright red blood in the stool, or black stools.
- Belly pain or pale skin.
The bleeding is usually painless. It is usually long-lasting or keeps coming back. Sudden heavy bleeding with low blood pressure is rare.
Aortic stenosis can cause shortness of breath with activity and tiredness. Fainting can also happen, and so can chest pain with activity. Easy bruising can point to a bleeding problem.
Causes and who gets it
Blood pushed through a narrowed aortic valve is under strong force. This changes von Willebrand factor, a protein that helps platelets stick to vessel walls. An enzyme then breaks the protein into pieces that are too small. Without enough of it, clotting does not work well, and abnormal blood vessels in the gut can bleed.
Aortic stenosis is common in older people because of age-related buildup of calcium on the valve. The abnormal gut blood vessels mostly occur in people over 60. Serious bleeding is not found in everyone with aortic stenosis. It is estimated to happen in 1 to 3 percent of people with moderate to severe aortic stenosis.
Pain relievers called NSAIDs, blood thinners, aspirin, and similar medicines can make bleeding worse.
How doctors diagnose it
Doctors look for all three parts: aortic stenosis, bleeding blood vessels in the gut, and signs of acquired von Willebrand syndrome. They ask about past bleeding and medicines. An echocardiogram, an ultrasound of the heart, shows how severe the aortic stenosis is.
Blood tests include a complete blood count and clotting tests. A stool test can find hidden blood. A platelet function test is often the first screen for acquired von Willebrand syndrome. A test of the size of von Willebrand factor pieces can confirm it, but it is slow and costly.
Scope exams of the upper and lower digestive tract can look for the source of bleeding. If the bleeding is hidden in the small bowel, a video capsule or a deeper scope exam may be needed.
Treatment
Treatment has two parts: controlling the bleeding and looking at the aortic valve. It is based on expert opinion, because there are few strong studies.
The first steps for bleeding are the same as for any other digestive bleeding. A person may get fluids through a vein and blood transfusions. Doctors treat bleeding vessels they find during a scope exam, for example with argon plasma coagulation (energy from ionized argon) or with clips. Iron pills and blood transfusions may be used for anemia, a shortage of red blood cells.
Replacing the aortic valve can stop the bleeding. Valve replacement appears to offer the best hope of long-term resolution of the bleeding. It can be done with open surgery. It can also be done with TAVR, where a new valve is placed through a thin tube in a blood vessel. TAVR is the treatment of choice for people at intermediate to high risk from open surgery.
Bleeding can come back if the new valve does not fit the person well, such as a leak around the valve. Bleeding in the gut can also happen after TAVR. The risk is higher when several blood-thinning medicines are used together. Doctors try to limit blood thinners when they can. Do not stop or change any medicine on your own. Follow your doctor's instructions.
When to see a doctor
Call 911 or go to the emergency room if you vomit blood, have bleeding that will not stop, faint, or have chest pain or discomfort lasting two minutes or more.
Black, tarry stools or blood in the stool can be signs of bleeding in the digestive tract. Have a doctor check them, especially if you have aortic stenosis.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. A direct primary care or concierge doctor can look into black stools or tiredness, order first blood tests, review medicines that raise bleeding risk, and help coordinate your heart and digestive specialists.
Common questions
Who gets Heyde syndrome?
Heyde syndrome mostly affects older adults, usually people over 65.
Does replacing the aortic valve stop the bleeding?
Replacing the aortic valve often stops the bleeding, but not always. Bleeding can come back if the new valve does not fit well. Studies comparing valve replacement with other care are lacking, so doctors weigh the choices for each person.
Why does a narrowed heart valve cause bleeding in the gut?
Blood pushed through the narrowed valve damages a clotting protein called von Willebrand factor. Without enough of it, platelets do not work well. Abnormal blood vessels in the gut can then bleed.
Sources
- World Journal of Gastroenterology - Aortic stenosis and Heyde's syndrome: A comprehensive review
- Cureus - Medical Management of Heyde Syndrome
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
