Southlake leads global conversation on coronary physiology

Southlake Health’s Regional Cardiac Program was selected to perform a live case at the Transcatheter Cardiovascular Therapeutics (TCT) Conference, the world’s largest and most prestigious conference for interventional cardiology. More than 10,000 clinicians from around the world watched Steven Miner, MD operate live on a patient at Southlake as he demonstrated the industry-leading comprehensive coronary physiology testing. The livestreamed case performed on October 26, marked a first for Southlake, achieving a milestone recognition for Canadian heart care at the Regional Cardiac Program. 

The live case demonstrated advanced diagnostic techniques that are used to better understand and treat coronary artery disease, one of the most common causes of heart-related illness and death in Canada. Dr. Miner, a world leader in performing this cardiac procedure, used his expertise to teach fellow cardiologists how to leverage the Coroventis CoroFlow technology for better patient outcomes. 

Understanding coronary artery disease beyond blockages 

Coronary artery disease occurs when the arteries that supply blood to the heart become narrowed or blocked, restricting blood flow and oxygen. This can lead to chest pain, shortness of breath, and even heart attacks. However, not all patients fit this traditional pattern. Many experience chest discomfort or symptoms of heart disease without a visible blockage. For decades, these patients were left without clear answers, but Southlake stepped up to overcome this challenge. 

In 2015, Southlake leaders approved the creation of the Cardiovascular Integrated Physiology program. The first procedure was performed in 2016, making Southlake the only hospital in Canada to offer comprehensive coronary physiology testing at that time. 

Initially using older technology, the process was updated in 2023 when Southlake became the first hospital in Canada to adopt the approved Coroventis CoroFlow system, distributed by Abbott. This advanced technology evaluates how coronary arteries function beyond what can be seen on a traditional angiogram. The system provides a complete physiological picture of both the large (epicardial) vessels and the microcirculation of blood through the smallest blood vessels, helping diagnose patients who show signs of heart disease despite having normal-looking arteries. By revealing hidden issues, physicians can better understand what is causing the patient’s heart symptoms and tailor treatments. This innovation positions Southlake’s regional cardiac program at the forefront of precision diagnostics and personalized heart care in Canada, and in the world, improving outcomes and quality of life for patients. 

A Canadian leader on the global stage 

Southlake has been performing this advanced work for nearly a decade, treating approximately 800 patients and publishing more than 30 research papers through the program. In 2025, the Canadian Association of Interventional Cardiologists appointed Dr. Miner the national Chair of the Canadian Coronary Physiology Registry. Since then, 24 Canadian cardiac sites have committed to adopting the Southlake protocol and contributing to the registry. This collaboration will facilitate ongoing national and international research with Southlake leading the way. 

The invitation to perform a live case at TCT was a major recognition of Southlake’s expertise and leadership. The annual event attracts more than 10,000 cardiovascular specialists from around the world, offering demonstrations, clinical breakthroughs, hands-on training, and innovation sessions from top cardiovascular centres. By teaching other physicians how to perform these advanced procedures and showcasing ground-breaking technology, the expertise at this conference has the potential to help save patients around the world and help them lead healthier lives. 

Southlake continues to push the boundaries of cardiac care, staying at the forefront of innovation through groundbreaking procedures and a growing list of cardiac firsts.