Transmyocardial Laser Revascularization

Evaluation of myocardial perfusion and left ventricular function six months after percutaneous transmyocardial laser revascularization: Comparison of two Ho‐YAG laser systems with the same wavelength, but different energy delivery and navigation systems

“…Surgical laser studies revealed significant improvements in the anginal class and exercise capacity, and an overall improvement in the quality of life [1][2][3][4]. As concerns the mechanism of TMLR, that is, direct blood flow through the laser channels [1,5], conflicting data have been published [6][7][8][9]. However, the clinical improvements observed after TMLR were not negligible; thus, other mechanisms were suggested, such as myocardial denervation through small local infarcts caused by laser injury, the prevention of left ventricular remodeling of the chronic ischemic area, and laser-triggered neoangiogenesis [10][11][12].…”