Dr. Adrian Petzl of the Montreal Heart Institute carried out Canada’s inaugural operation that treats a blood clot and atrial fibrillation in a single session on Monday, September 14, 2026. The patient, who could not be placed on standard anticoagulant medication, underwent the combined intervention at the institute’s cardiac centre.
Atrial fibrillation, a common heart‑rhythm disorder, typically obliges patients to take anticoagulants to lower the risk of clot formation and subsequent stroke. In cases where anticoagulants are contraindicated, physicians have limited options, often resorting to separate procedures or accepting higher risk. The new technique merges clot extraction with an arrhythmia‑targeted treatment, aiming to resolve both problems without the need for blood‑thinning drugs.
The procedure involved removing the clot while simultaneously addressing the irregular electrical activity that characterises atrial fibrillation. While specific technical details have not been disclosed, the approach represents a coordinated effort to manage two interrelated cardiac threats in one operative window.
Early outcomes from the intervention were reported as highly encouraging, with a 90 percent success rate noted in the initial assessment. Success was measured by effective clot removal and restoration of normal heart rhythm, providing immediate therapeutic benefit to the patient who otherwise faced limited alternatives.
The dual‑treatment method could broaden therapeutic choices for a subset of atrial‑fibrillation patients who are unable to tolerate anticoagulants. By offering a single‑session solution, the technique may reduce hospital stays and procedural risk, potentially reshaping standard care pathways for complex cardiac cases across Canada.