Please note that clinic appointments may be virtual visits. The clinic team will let you know what type of appointment is appropriate for your care. Learn more about virtual visits at UHN »

 What We Do

Hyperbaric oxygen therapy uses 100 percent oxygen, administered at an increased atmospheric pressure. It increases the amount of oxygen that is carried by the blood, to areas of the body with compromised blood supply. Other effects of hyperbaric oxygen therapy include growth of new vessels, optimization of  white blood cell function, and restoration of tissue metabolic balance.

Using a large, 8-person chamber, as well as three single person chambers, our unit offers:

  • Elective hyperbaric therapy
  • Urgent care hyperbaric therapy
  • Wound assessments
  • Transcutaneous oximetry

The Hyperbaric Medicine Unit follows treatment guidelines that have been established by the Undersea and Hyperbaric Medical Society (UHMS).​

Conditions Treated

  • Acute thermal burn injury
  • Air or gas embolism
  • Arterial insufficiencies (central retinal artery occlusion; Enhancement of healing in selected problem wounds)
  • Carbon monoxide poisoning
  • Carbon monoxide poisoning complicated by cyanide poisoning
  • Clostridial myositis and myonecrosis (gas gangrene)
  • Compromised grafts and flaps
  • Crush injury, compartment syndrome and other acute traumatic ischemias
  • Decompression sickness
  • Delayed radiation injury (soft tissue and bony necrosis)
  • Idiopathic Sudden Sensorineural Hearing Loss (Approved on October 8, 2011, by the UHMS Board of Directors)
  • Intracranial abscess
  • Necrotizing soft tissue infections
  • Osteomyelitis (refractory)
  • Severe anemia​​​​​​​​​​​​

How to Prepare

Your first appointment can take 2 hours or more. Follow-up appointments usually take 15 to 60 minutes.​

Learn more about what you can expect when you have a clinic appointment.

 Materials and Resources to Help You

Resources from the Patient & Family Education Program PDF Icon

* These material(s) are also available in other languages.

​Visit our Health Information section and find dedicated resources to help you understand your condition. Find the information​ you'r​e looking for.​​​​​​​​​

 Meet Our Team

​​​​Under the direction of the medical director, our certified hyperbaric technologists, respiratory therapist and nurses will provide your hyperbaric treatment.​ The medical director and all staff physicians are from the Department of Anesthesia.

Medical Director: Dr. Rita Katznelson
Phone: 416 340 4800 ext. 6273​

Charge Therapist​: Ray Janisse (

Administration Office: Sara Cibaj​


Staff Physicians or Specialists

Staff Respiratory Therapists/CHTs

  • Julia Avrutski
  • Nicole Brown
  • Sarah Chan
  • Andrew Cheeatow
  • Jessica Davis
  • Jas Dhillon
  • Stephanie Dorner
  • Sean Doyle
  • Samira Fard
  • Tara Fowler
  • Philip Graham
  • Elise Greer
  • Laura Hadley
  • Ray Janisse
  • Peter Kruzyk
  • Christine Lao
  • Mike Long
  • Mary Rose Lynch
  • Julie Malone
  • Cassandra McBride
  • Megan Mihail
  • Martha Montano
  • ​Martin Necpal
  • Aaron Rockman
  • George Saab
  • Kugan Sivaganeshan
  • Tiffany Tram
  • Mustafa Wahaj
  • Tina Yan
  • Jingli Yang

 Upcoming Courses

Image of Hyperbaric Medicine Unit 

Introductory Course in Hyperbaric Medicine

University Health Network – ​Toronto General Hospital is pleased to be offering a 40-hour introductory course in Hyperbaric Medicine.​


Why should I take this course?

  • ​Approved by the Undersea and Hyperbaric Medical Society (UHMS) for 40 CME credits
  • Recognized by the National Board of Diving and Hyperbaric Medical Technology (NBDHMT) as an approved CHT training course for 40 CME credits
  • ​​Health care providers may obtain certification as a Certified Hyperbaric Technologist (CHT) with the NBDHMT, after course completion​
  • Gain understanding of how Hyperbaric Therapy may benefit patients in a clinical environment
  • ​Faculty consists of UHN Hyperbaric Medicine Unit physicians, respiratory therapists and certified hyperbaric technicians

Who should take this course?​

  • Physicians, Surgeons, Residents, Fellows
  • Nurses, Wound Care Specialists, Paramedics, Respiratory Therapists
  • Non-health cavre providers with an interest in hyperbaric medicine

Upcoming Course Dates

Please note, due to the current situation, courses may change to on online format in the foreseeable future.

  • November 24 – 28, 2020: Online
  • March 30 – April 3, 2021: TBD online/in-person
  • November 23 – 27, 2021: TBD online/in-person


Please download​ and complete ​the registration form​.
Chrome users: Please note that you will need to download and open this form using Adobe Acrobat Reader in order to save your data and submit via email. You will not be able to submit the form unless it has been downloaded.​

Registration deadline: For all courses, please register 1 month prior to the start date.
Payment by credit card (Visa, MC, AmEx) accepted.​​

Phone: 416 340 3598


UHN employees: $750.00
Non-UHN employees and external applicants: $1,250.00​

Course Objective

The UHN Introductory Hyperbaric Medicine Course will provide participants the basic competencies to practice in hyperbaric medicine. The course will provided education on the indications and contraindications for hyperbaric treatments; it will provide them guidelines on the usage of treatment tables. The course will allow for hands-on clinical practice of these skill sets, in addition to learning how to manage the chamber and clinical emergencies during hyperbaric treatments, as well as theory and historical background. The UHN Introductory Hyperbaric Medicine Course is a comprehensive course for participants interested in entering into hyperbaric medicine practice.​

Topics to be Covered

  • History of diving and hyperbaric chambers
  • Diving physics
  • UHMS-approved indications
  • Diving anatomy and physiology
  • Emergency medical management
  • Contraindications to hyperbaric therapy
  • Treatment tables
  • Patient management
  • ​And much more
For more information about upcoming courses, please contact Ray Janisse, RRT, CHT, Practice Lead.

Designation Statement: The Undersea and Hyperbaric Medical Society designates this Live Activity for a maximum of 40 AMA PRA Category 1 Credit(s)™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Full Disclosure Statement: All faculty members and planners participating in continuing medical education activities sponsored by University Health Network-Toronto General Hospital, Hyperbaric Medicine Unit are expected to disclose to the participants any relevant financial relationships with commercial interests. Full disclosure of faculty and planner relevant financial relationships will be made at the activity.

UHMS Disclaimer: The information provided at this CME activity is for Continuing Medical Education purposes only. The lecture content, statements or opinions expressed however, do not necessarily represent those of the Undersea and Hyperbaric Medical Society (UHMS), its affiliates or its employees.

Accreditation Statement: This activity has been planned and implemented in accordance with the accreditation requirements and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint providership of Undersea and Hyperbaric Medical Society and University Health Network-Toronto General Hospital, Hyperbaric Medicine Unit. The Undersea and Hyperbaric Medical Society is accredited by the ACCME to provide continuing medical education for physicians.