Cybermedlife - Therapeutic Actions Laser puncture

Effects of laser reflex therapy on a motor function of the gall bladder and physical properties of bile in patients with chronic acalculous cholecystitis

Abstract Title: [Effects of laser reflex therapy on a motor function of the gall bladder and physical properties of bile in patients with chronic acalculous cholecystitis]. Abstract Source: Ter Arkh. 2009;81(2):57-61. PMID: 19334492 Abstract Author(s): N M Burduli, L G Raniuk Abstract: AIM: To study effects of laser puncture in combined treatment of chronic non-calculous cholecystitis on motor function of the gallbladder, bile physical characteristics and clinical symptoms. MATERIAL AND METHODS: 73 patients with chronic non-calculous cholecystitis were divided into two groups: 35 patients received standard therapy alone (control group) and 38 patients were exposed to laser puncture as a component of combined treatment. RESULTS: Laser radiation on acupuncture points has a positive therapeutic result, i.e. shorter clinical symptoms, correction of motor function of the gallbladder and bile physical characteristics. CONCLUSION: Laser puncture is an effective method of acalculous cholecystitis treatment and can be included in relevant combined schemes.   Article Published Date : Jan 01, 2009
Therapeutic Actions Laser puncture

NCBI pubmed

Calyceal Fluid Temperature During High-Power Holmium Laser Lithotripsy in an In Vivo Porcine Model.

Related Articles Calyceal Fluid Temperature During High-Power Holmium Laser Lithotripsy in an In Vivo Porcine Model. J Endourol. 2018 Jun 15;: Authors: Aldoukhi AH, Hall TL, Ghani KR, Maxwell AD, MacConaghy B, Roberts WW Abstract INTRODUCTION: With increasing use of high-power laser settings for lithotripsy, the potential exists to induce thermal tissue damage. In vitro studies have demonstrated that temperature elevation sufficient to cause thermal tissue damage can occur with certain laser and irrigation settings. The objective of this pilot study was to measure calyceal fluid temperature during high-power laser lithotripsy in an in vivo porcine model. METHODS: Four female pigs (30-35 Kg) were placed under general anesthesia and positioned supine. Retrograde ureteroscopy with entry into upper or middle calyces was performed. Thermocouples were placed into the calyx by open exposure and puncture of the kidney or retrograde alongside the ureteroscope. A 242 μm laser fiber was positioned in the center of the calyx and activated (0.5 J, 80 Hz = 40 W) for 60 seconds with high, medium, or no irrigation delivered in each trial. Finite element simulations of laser-induced heating in a renal calyx were also performed. RESULTS: Peak temperatures of 84.8, 63.9, and 43.6 ˚C were recorded for no, medium, and high irrigation, respectively. Mean time to reach threshold of thermal injury (t43 of 120 minutes) was 12.7 and 17.8 seconds for no and medium irrigation. Thermal damage thresholds were not reached in high irrigation trials. Numerical simulations revealed similar results with peak spatial average fluid temperatures of >100, 58.5, and 37.5 ˚C during 60 seconds of laser activation for 0.1, 15, and 40 mL/min irrigation, respectively. CONCLUSIONS: High-power holmium laser settings (40W) can induce potentially injurious temperatures in the porcine in vivo model, particularly with slower irrigation rates. Characterization of thermal dose across a broader range of laser parameter settings is underway to map out the thermal safety envelope. PMID: 29905092 [PubMed - as supplied by publisher]