The effects of laser beams with different wave lengths on left anterior descending coronary artery

Introduction: Lasers have found a wide field of use after. Theodore Maiman developed first operating laser in 1960. Health sector is one of these fields. Applications in cardiovascular surgery field are yet new and promising applications. Material and Method: The aim was to investigate the usability of lasers in different wavelength (980 nm and 1470 nm fiber laser) in coronary artery surgery. The effects of 980 nm and 1470 nm fiber lasers on left anterior descending coronary artery (LAD) were evaluated. Sheep LAD was used in the experiments as their dimensions and thickness is close to human LAD and easy reachability. The hearts of the sheep cut only for consumption, not for experiment, were bought from the cutting center and brought to the laboratory in half an hour to be examined. Result: Using 980 nm fiber laser, application was made with 6.8 W power, low pressure and constant contact. Overpenetration was provided through full-thickness penetration in LAD. Using 1470 nm fiber laser, application was made with 11.4 W power, low pressure and constant contact. Full-thickness penetration was not acquired in LAD and overpenetration couldn't be provided. Discussion: Coronary artery surgery is one of the most important application fields of cardiovascular surgery. In our study evaluating the usability of 980 nm and 1470 nm fiber lasers in coronary artery surgery, we detected that 980 nm fiber laser had a higher effect on LAD intima layer compared to 1470 nm fiber laser and was more compatible with LAD tissue. Endoscopic application of coronary artery surgery by using laser can provide many advantages to the patients such as fast wound recovery, less pain and shortened discharge duration. But more comprehensive studies using more data are required in this field.