The predictive factors that total laser energy consumed during retrograde intrarenal surgery (RIRS): stone area and density

• Published in: Lasers in medical science 2023-05, Vol.38 (1), p.128-128, Article 128
• Main Authors: Kaygısız, Onur, Aydın, Yavuz Mert, Çiçek, Mehmet Çağatay, Polat, Rıdvan, Coşkun, Burhan, Ocakoğlu, Gökhan, Kılıçarslan, Hakan
• Format: Article
• Language: English
• Subjects: Age factors; Body mass; Body mass index; Body size; Calculi; Density; Dentistry; Energy; Energy consumption; Gender; Holmium; Humans; Kidney Calculi - surgery; Lasers; Lasers, Solid-State - therapeutic use; Lithotripsy; Lithotripsy - methods; Lithotripsy, Laser; Localization; Medicine; Medicine & Public Health; Nephrolithiasis; Optical Devices; Optics; Original Article; Photonics; Quantum Optics; Retrospective Studies; Sheaths; Shock waves; Surface area; Surgery; Treatment Outcome; YAG lasers
• ISSN: 1435-604X; 0268-8921; 1435-604X
• DOI: 10.1007/s10103-023-03792-4

Holmium: YAG (Ho: YAG) laser lithotripsy with flexible ureterorenoscopy can be used with high stone-free and low complication rates for renal stones. This study aimed to determine the factors affecting the total laser energy in cases with provided stone-free status after a single session of retrograde intrarenal surgery (RIRS). Data of 222 patients who underwent RIRS between October 2017 and March 2020 were evaluated retrospectively. After exclusion criteria, the study was carried out with 184 stone-free cases. All cases were performed without using a ureteral access sheath (UAS), and dusting was preferred as the lithotripsy method. The effects of age, gender, body mass index (BMI), previous RIRS history, previous shock wave lithotripsy (SWL) history, stone localization, number of stones, stone surface area, and stone density on total laser energy were analyzed. There was no significant correlation between total laser energy with gender, BMI, previous RIRS history, previous SWL history, stone localization, and the number of stones ( p :0.347, p :0.482, p :0.119, p :0.167, p :0.907, p :0.933 respectively). There was a significant correlation between age and total laser energy ( p = 0.032), but it was not observed when the effect of the stone surface area was removed ( p = 0.354). There were significant correlations between total laser energy and stone surface area, stone density, and total laser time ( p