Our UHN programs and services are among the most advanced in the world. We have grouped our physicians, staff, services and resources into 10 medical programs to meet the needs of our patients and help us make the most of our resources.
University Health Network is a health care and medical research organization in Toronto, Ontario, Canada. The scope of research and complexity of cases at UHN has made us a national and international source for discovery, education and patient care.
Our 10 medical programs are spread across eight hospital sites – Princess Margaret, Toronto General, Toronto Rehab’s five sites, Toronto Western – as well as our education programs through the Michener Institute of Education at UHN. Learn more about the services, programs and amenities offered at each location.
Maps & Directions
Find out how to get to and around our nine locations — floor plans, parking, public transit, accessibility services, and shuttle information.
Ways You Can Help
Being touched by illness affects us in different ways. Many people want to give back to the community and help others. At UHN, we welcome your contribution and offer different ways you can help so you can find one that suits you.
The Newsroom is the source for media looking for information about UHN or trying to connect with one of our experts for an interview. It’s also the place to find UHN media policies and catch up on our news stories, videos, media releases, podcasts and more.
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We specialize in the assessment, follow-up and management of patients requiring surgery for aortic disease. Patients referred to this clinic include those with aneurysms and/or dissections involving the thoracic and thoracoabdominal aorta. With expertise in state-of-the-art open, endovascular and hybrid repair techniques, our team tailors the plan for each patient using a multi-disciplinary approach.
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what you can expect when you have a clinic appointment.
The Patient & Family Education Program at UHN offers valuable resources to help you understand your condition.
health information section.
Administrative Team: Liza Fabian, Victoria de Melo, Leah Gabriel
Medical Imaging Consultant: Dr. Kong Teng Tan
Nurse Practitioner: Connie Xu
Research Coordinators: Karamvir Deol, Rifat Islam
At the Thoracic Aortic Surgery Clinic (TASC), we aim to improve the clinical outcomes of not only our current patients but also our future patients with aortic disease. This drives us to be involved in a wide range of clinical and basic science research to better understand what factors lead to life-threatening aortic complications and how to identify and treat patients at risk. We also explore the role of novel cutting-edge technologies in the surgical treatment of aortic disease.
The current research projects at TASC are:
Aorta BiomechanicsThis study examines the material properties of aortic tissue, characterizing it and testing it for vulnerability to dissection and rupture. This study has improved our understanding of how aortic tissue behaves and aims to identify a mechanics-based marker for aneurysm risk prediction.
Biomechanical and Metabolic Properties of Proximal Aortic Aneurysms in Patients with Bicuspid Aortic Valves (BAV_MRPET)This study evaluates the role of an innovative hybrid imaging modality, combined Positron Emission Tomography and Magnetic Resonance Imaging (PET/MR), in predicting areas of aneurysms that may be unstable and prone to rupture and/or dissection.
Treatment In Thoracic Aortic Aneurysm Surgery versus Surveillance (TITAN: SvS)This multicentre study is the first randomized controlled trial that compares two strategies for ascending aortic aneurysms that are not yet at the traditional size threshold for surgery: early surgery or ongoing surveillance.
The International Registry of Aortic Dissection (IRAD)We participate in the largest international multicentre registry for acute dissections (Type A and Type B). This registry has provided us with foundational knowledge on the outcomes following aortic dissection.
Montalcino Aortic Consortium (MAC): Precision Medicine for Heritable Thoracic Aortic DiseaseWe participate in this multicentre registry to better characterize the known causative gene mutations for heritable thoracic aortic disease and to identify novel genes that lead to heritable thoracic aortic disease.
DARTS: A Postmarket StudyThis study investigates the performance and clinical benefits of the innovative Ascyrus™ Medical Dissection Stent (AMDS) to treat patients with certain types of aortic dissection.
Thoraflex Hybrid Post-Market Study (THOR)The purpose of this study is to follow patients who have received a Thoraflex™ Hybrid device in treatment of aortic arch aneurysms and dissections.
For more information on any of the above studies, please contact our research coordinator,
You will be contacted with information about your first appointment.
Please bring the following to your appointment. Not all of these items may be needed for your appointment. Our clinic or your referring doctor will let you know what you must bring.
Please arrive 15 minutes before your appointment.
When you arrive, you will sign in with the receptionist. You will need your health card (OHIP card) to sign-in. If you do not have an OHIP card, please bring another form of government-issued photo ID, such as a driver’s license or passport.
You may be given a Measuring Health Equity Questionnaire to fill out. This form contains questions about your background. We collect this information to find out who we serve and what unique needs you may have. The form is voluntary and you can choose ‘prefer not to answer’ to any or all questions. However, the information you choose to give us will help us improve the quality of care for you and others.
First appointments take longer than follow-up appointments. Your first appointment can take 2 hours or more. Follow-up appointments usually take 15 to 30 minutes. We do everything we can to stay on time but sometimes unforeseen circumstances may delay your appointment.
At the end of your first appointment, the nurse or doctor will give you a contact list for your health care team. If you don’t get a contact list, feel free to ask for it.
After every appointment, a member of your health care team will tell you about your next visit. Be sure you understand what is going to happen next. For example, know the time and place of your next visit or if someone will call you with this information.
If you are unsure about what your next steps are, don’t be afraid to ask a member of your team. We are here to help you.
We understand that reaching us by phone can sometimes be difficult. Often our phone lines are busy or are turned over to the message centre so our staff can prepare for clinic visits or help other patients. We make every effort to return your call within 24 hours. Our staff will try to reach you 2 times. If we are not able to reach you directly you may need to call us again.