Urology
An in vitro model study on the temperature changes in the central area of ureteroscopic holmium laser lithotripsy
Hui Liang, Yin Yu, Xiaozhong Liang, Zhangguo Zhu, Chaoguo Wang, Bin Huang, Lijian Liang
Published 2017-12-08
Cite as Chin J Exp Surg, 2017, 34(12): 2078-2080. DOI: 10.3760/cma.j.issn.1001-9030.2017.12.020
Abstract
ObjectiveTo explorer the temperature changes in the central area of ureteroscopic holmium laser lithotripsy.
Methods(1) In vitro test tube model: By measuring the saline temperature changes after 15 s of continuous working of 30 W holmium laser (group A); after 15 s of continuous working of 20 W holmium laser (group B); and after 10 s of continuous working of 20 W holmium laser (group C). (2) In vitro rubber tube model (simulating human urinary tract): By measuring the saline temperature changes after 5 s of continuous working of 30 W holmium laser in rubber tube (group D); after 3 s of continuous working of 30 W holmium laser in rubber tube (group E); after 5 s of continuous working of 20 W holmium laser in rubber tube (group F); and after 3 s of continuous working of 20 W holmium laser in rubber tube (group G).
ResultsThe saline temperature in group A was significantly higher than that in group B (P=0.000). The temperature in group B was higher than that in group C[(69.80±3.23), (63.20±2.26), (57.10±2.31) ℃, P=0.000]. The temperature in group D was higher than that in group E (P=0.000), and that in group F was higher than that in group G (P=0.000). The temperature in group D was higher than that in group F (P=0.000), and that in group E was higher than that in group G [(82.30±4.33), (75.50±2.41), (67.40±1.36), (58.20±3.43) ℃, P=0.000].
ConclusionThis study indicated that the working of holmium laser will heat the saline in working area. The lower working power and the shorter time the laser continuously worked, the less the water temperature of laser working area would rise.
Key words:
Holmium laser; Lithotripsy; Ureteroscopy; Local temperature
Contributor Information
Hui Liang
Department of Urology, Xinchang Hospital of Traditional Chinese Medicine, Xinchang 312500, China
Yin Yu
Xiaozhong Liang
Zhangguo Zhu
Chaoguo Wang
Bin Huang
Lijian Liang