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.
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There are at UHN:
The Toronto CTEPH Program receives referrals from physicians for patients who have suspected diagnosis of CTEPH. Led by
Dr. de Perrot, the program offers multidisciplinary assessment by the surgeons and respirologists who have expertise in the field of pulmonary hypertension.
Being the largest Canadian centre for the pulmonary thromboendarterectomy (PEA) surgery, the program receives referrals from across the country. Our program is involved in:
All patients with the history of pulmonary emboli who remain symptomatic with dyspnea despite 3 months of therapeutic anticoagulation should undergo a ventilation-perfusion scan (V/Q scan). If the ventilation-perfusion scan shows mismatched perfusion defects, patients should be referred to our center for definitive evaluation and treatment.
Considering that a proportion of patients with CTEPH do not have a history of pulmonary emboli, the presence of dyspnea with mismatch perfusion defects on V/Q scan should also warrant referral to our center for evaluate the possibility of CTEPH.
CTEPH is a type of pulmonary hypertension that is caused by the unresolved or recurrent pulmonary emboli leading to chronic pulmonary vascular obstruction by an organized clot. The disease progresses despite adequate anticoagulation as a result of secondary arteriopathy eventually leading to the right heart failure and death. Recognition of CTEPH in patients with history of pulmonary emboli is important to achieve timely diagnosis and appropriate follow up/referral.
Patients with CTEPH can present with acute pulmonary emboli. CTEPH should be suspected in the presence of:
Pulmonary thromboendarterectomy is the treatment of choice for CTEPH. The PEA surgery leads to major clinical improvements due to improved hemodynamic parameters and oxygenation, and reduction in dead space ventilation. The surgery can be also curative in the large number of patients with resolution of the pulmonary hypertension. Majority of the patients experience significant functional recovery and are able to return to their baseline physical activity level without supplemental oxygen use.
If PEA surgery is not right for the patient, the CTEPH team will assess the patient to find other treatment options that may include:
More information for physicians can be found here.
First appointments can take 2 hours or more. During the first appointment, you will meet several health professionals who will do a detailed assessment of your health. You may also have some investigations on the same day before your clinic visit. Follow-up appointments usually take 30 to 45 minutes.
Learn more about what you can expect when you have a clinic appointment.
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Dr. Marc de Perrot
Thoracic Surgeon: Dr. Laura Donahoe
Nurse Practitioner: Anastasia Bykova
Clinical Coordinator: Jennifer Monroy
Clinic Nurse Educator: Marilena Rutka
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.