Laser, irrigation, and suction settings to optimize intra-renal temperature and pressure during automated laser lithotripsy in an ex vivo study part I.

ABSTRACT: This study evaluated the effects of various laser, irrigation, and suction parameters on intra-renal temperature (IRT) and pressure (IRP) using an ex vivo porcine kidney. We introduced a novel Laser: Stop ratio (LS ratio), which automatically balances activation and resting periods. Only kidneys with a 10 mL pelvo-calyceal volume were used to assess the parameters [Thulium fiber laser (TFL) and Holmium: Yttrium-Aluminum-Garnet (Ho: YAG): 1.0 J/20Hz, 0.5 J/40Hz], pump-based irrigation of 30 mmHg (P30) and 50 mmHg (P50), LS ratios from 2:4 to 12:4, and continuous laser activation, with or without the flexible and navigable suction ureteral access sheath (FANS-UAS). With FANS-UAS, a Laser: Active suction: Rest ratio of 4:2:4 was applied at 200 mmHg suction. IRT and IRP were recorded every 30 

SUBMITTER: Lee H 

PROVIDER: S-EPMC12808707 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature