Optimizing laser therapy parameters in pharyngeal tonsil diseases in children

Abstract

To analyze treatment outcomes in children with chronic inflammatory diseases of the pharyngeal lymphoid ring in out-patient settings using standard methods of LT (by localization, technique, and time of laser exposure) with different lasers. A total of 214 patients aged 1-15 years with chronic inflammatory diseases of the pharyngeal lymphoid ring were included in the study. The patients were divided into three main groups (1-3) and received LT using different lasers on the Lasmik device and a control group without LT. Parameters of laser radiation sources (groups) were the following: Group 1 wavelength (λ) 635 nm, pulsed mode (PM), pulse width 100 ns, pulse power (PP) 5 W, mean power (MP) 0.04 mW; Group2 λ=904 nm, PM, PP=5 W, MP=0.04 mW; Group 3 λ=635 nm, continuous mode, MP=15 mW. The outcomes were assessed by clinical improvement. A comparative analysis of the comprehensive treatment outcomes showed significantly better outcomes in the 1-3 groups compared to the control group. A higher efficiency of pulsed low-intensity laser radiation (LIRI) in comparison with a continuous mode, mostly red spectrum (λ=635 nm, PM, MP=5 W) was shown. This laser exposure results in faster improvement and allows performing LIRI exposure percutaneously without using light guides, which require sterilization and are quickly degrading.