Transmyocardial Laser Revascularization (TMR)

Transmyocardial laser revascularization (TMR) uses a laser beam to improve blood flow to heart muscle. TMR is typically performed along with coronary artery bypass graft (CABG or bypass) surgery. But TMR is not commonly used. And it is not the right treatment for everyone.

In this technique, a laser beam is used to create tiny channels in the wall of the heart. The initial concept of TMR was that blood supply would flow through these channels and supply oxygen to the heart muscle. TMR may relieve angina. But how TMR works is not well understood.

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