Laser Revascularization Method Could Help Where Bypasses Can’t

A laser technique that uses pulses of infrared light to blast channels into the heart muscle has long been the last hope for patients whose arteries are so clogged and constricted that they cannot benefit from bypass surgery. The technique, called transmyocardial laser revascularization, or TMR, has remained a niche procedure for 20 years, practiced only on patients with no other options....