Surgeon Q&A: Treating Aneurysms, Bicuspid Aortic Valves and Connective Tissue Disorders

Written By: Allison DeMajistre, BSN, RN, CCRN

Medical Expert: Chris Malaisrie, MD, Cardiac Surgeon, Northwestern Medicine, Chicago, Illinois

Reviewed By: Adam Pick, Patient Advocate, Author & Website Founder

Published: August 14, 2025

When patients have a dual diagnosis of bicuspid aortic valve and a connective tissue disorder, it can have a consequential impact on the cardiovascular system. A bicuspid aortic valve is a congenital condition characterized by the aortic valve having only two leaflets, rather than the normal three-leaflet formation, which can lead to aortic stenosis, regurgitation, and aneurysm due to the resulting abnormal blood flow. In some connective tissue disorders, genetic mutation can cause structural weaknesses, particularly to the aorta and the aortic wall. The combination of these two conditions can significantly compromise the aorta over time.

We recently received a patient question from Lily, who brings attention to this vital topic of connective tissue disorders and bicuspid aortic valves. Lily asks, “I have a connective tissue disorder. Are people with bicuspid aortic valves more susceptible to additional aneurysms throughout their bodies?” Adam Pick, founder of HeartValveSurgery.com, met with Dr. Chris Malaisrie, a leading cardiac surgeon at Northwestern Medicine in Chicago, Illinois, to answer Lily’s question.

 

 

Facts About Bicuspid Aortic Valves, Connective Tissue Disorders and Aneurysms

Here are the key insights shared by Dr. Malaisrie:

  • The location of aneurysms is essential. “Patients with bicuspid aortic valve are susceptible to having aneurysms in other parts of the body, not only the aorta, but also the branches off the aorta,” said Dr. Malaisrie. He explained that it’s important to use diagnostic testing to find out where the aneurysms coexist so they can be treated. “For bicuspid valves, the aneurysm usually exists in the ascending aorta as the aorta comes out of the heart,” he said. “We can fix the aortic valve and replace that aneurysmal part of the aorta.”

 

Aortic Valve and Aneurysm Replacement

 

  • How do you and your team fix an aneurysm in the aorta? “The aneurysm is not repaired; it is actually resected,” he said. “We completely take out that diseased part of the aorta and in its place, we put a Dacron graft, which is a pre-manufactured plastic tube.”

Thanks Dr. Malaisrie and Northwestern Medicine!

On behalf of all the patients in our community, thank you, Dr. Chris Malaisrie, for everything you and your team are doing at Northwestern Medicine in Chicago, Illinois!

Related links:

Keep on tickin,
Adam

P.S. For the deaf and hard-of-hearing members of our patient community, we have provided a written transcript of our interview with Dr. Malaisrie below.

Written by Adam Pick
- Patient & Website Founder

Adam Pick, Heart Valve Patient Advocate

Adam Pick is a heart valve patient and author of The Patient's Guide To Heart Valve Surgery. In 2006, Adam founded HeartValveSurgery.com to educate and empower patients. This award-winning website has helped over 10 million people fight heart valve disease. Adam has been featured by the American Heart Association and Medical News Today.

Adam Pick is a heart valve patient and author of The Patient's Guide To Heart Valve Surgery. In 2006, Adam founded HeartValveSurgery.com to educate and empower patients. This award-winning website has helped over 10 million people fight heart valve disease. Adam has been featured by the American Heart Association and Medical News Today.

Video Transcript:

Adam Pick: Hi everybody. It’s Adam with HeartValveSurgery.com and we’re in Los Angeles, California at the Society of Thoracic Surgeons Conference. I am thrilled to be joined by Dr. Chris Malaisrie, who is a leading cardiac surgeon at Northwestern Medicine in Chicago, Illinois.

Dr. Malaisrie, you and I have known each other for a long time. It is great to see you again here at STS.

Dr. Chris Malaisrie: Good to see you again, Adam.

Adam Pick:  There’s a lot of new research and data coming out here. We’re also getting questions from patients all over the world. This comes at us from Lily, all about connective tissue disorder and bicuspid aortic valves. Lily asks, “I have a connective tissue disorder. Are people with bicuspid aortic valves susceptible to additional aneurysms throughout their body?”

Dr. Chris Malaisrie: Patients with bicuspid aortic valve are susceptible to having aneurysms in the other parts of the body, not only the aorta, but also the branches off of the aorta. In addition, bicuspid aortic valve patients and connective tissue disorders, we diagnostically where these aneurysms coexist, because there’s treatments for those.

For bicuspid valves, the aneurysm usually exists in the ascending aorta. As the aorta comes out of the heart, we can fix the aortic valve and also replace that aneurysm part of the aorta.

Adam Pick: Dr. Malaisrie, to fix an aneurysm in the aorta, how do you and your team do that?

Dr. Chris Malaisrie: Right, so the aneurysm is not repaired, the aneurysm is actually resected, we completely take out that diseased part of the aorta and in its place we put a Dacron graft, which is pre manufactured, it’s a plastic tube,

Adam Pick: Lily, I hope that helped you. I know it helped me and Dr. Malaisrie, as always, thanks to you and your team at Northwestern Medicine in Chicago for everything you’re doing to help patients with heart valve disease, connective tissue disorders, and aneurysm.

Thanks so much for being with me today.

Dr. Chris Malaisrie: Thanks very much, Adam.