ABSTRACT
Introducción: En la actualidad existen 3 modalidades técnicas de endolitotricia con láser Holmium:YAG (Ho:YAG) consideradas básicas (fragmentación, pulverización, "pop-corn"). Presentamos la técnica de fragmentación dirigida por discontinuidades preferentes (FDDP), un nuevo concepto de endolitotricia con láser Ho:YAG. Material y métodos: La técnica de FDDP se basa en la aplicación selectiva (dirigida a un punto concreto preseleccionado) de la energía sobre una zona visualmente proclive a la formación de una línea de fractura o discontinuidad preferente (condicionada por la anisotropía de la urolitiasis). El régimen energético (setting) idóneo consiste en un elevado rango de energía de trabajo (2-3J) con un muy bajo rango de frecuencia (5-8 Hz) y pulso de amplitud corta. Entre enero del 2015 y febrero del 2017 se ha realizado la técnica de FDDP en 37 procedimientos (7 NLP, 16 RIRS, 12 URS, 2 cistolitotomía), con un láser Ho:YAG (Lumenis Pulse 120H(R), Tel-Aviv, Israel). Potencia máxima empleada: 24 W (3 J/8Hz) con fibras de 365 y 273 mi. (URS, RIRS), y 32 W (4 J/8Hz) con fibras de 550 mi. (NLP, cistolitotomía). Resultados: Con técnica de FDDP se obtuvo en todos los casos una mejora estratégica para continuar la endolitotricia o extraer fragmentos. No se registraron complicaciones derivadas de la aplicación de esta modalidad. Conclusiones: La FDDP puede ser considerada como una opción complementaria en combinación con las modalidades básicas de fragmentación y pulverización. En nuestra experiencia, significa un avance para optimizar el rendimiento de la endolitotricia con láser Ho:YAG
Introduction: There are currently 3holmium laser, YAG (Ho:YAG) endolithotripsy procedures that are considered basic (fragmentation, pulverisation, "pop-corn" technique). We present the technique of fragmentation targeted at preferred discontinuities (FTPD), a new concept of endolithotripsy by Ho:YAG laser. Material and methods: The FTPD technique is based on the selective application of energy (targeting a specific preselected point) to an area that is visually prone to the formation of a fracture line or preferred discontinuity (conditioned by the anisotropy of the urolithiasis). The ideal energy regimen (setting) is a high range of working energy (2-3J) with a very low frequency range (5-8Hz) and short pulse width. Between January 2015 to February 2017, the FTPD technique was used in 37 procedures (7 NLP, 16 RIRS, 12 URS, 2 cystolithotomies), with a Ho:YAG laser (Lumenis Pulse 120H (R), Tel-Aviv, Israel). Maximum power used: 24W (3J/8Hz) with fibres of 365 mi. and 273 mi. (URS, RIRS), and 32W (4J/8Hz) with fibres of 550 mi. (NLP, cystolithotomy). Results: Strategic improvement was achieved in all cases using the TFPD technique to continue the endolithotripsy or remove fragments. No complications were recorded after the use of this method. Conclusions: FTPD can be considered a complementary option in combination with the basic methods of fragmentation and pulverisation. In our experience, it constitutes significant progress in optimising the performance of Ho:YAG laser endolithotripsy
Subject(s)
Humans , Lithotripsy, Laser/methods , Laser Therapy , Urinary Calculi/metabolism , Urinary Calculi/therapy , Ultrasonic Surgical Procedures/methods , Lithotripsy, Laser/instrumentation , Ultrasonic Surgical Procedures/instrumentationABSTRACT
INTRODUCTION: There are currently 3holmium laser, YAG (Ho:YAG) endolithotripsy procedures that are considered basic (fragmentation, pulverisation, "pop-corn" technique). We present the technique of fragmentation targeted at preferred discontinuities (FTPD), a new concept of endolithotripsy by Ho:YAG laser. MATERIAL AND METHODS: The FTPD technique is based on the selective application of energy (targeting a specific preselected point) to an area that is visually prone to the formation of a fracture line or preferred discontinuity (conditioned by the anisotropy of the urolithiasis). The ideal energy regimen (setting) is a high range of working energy (2-3J) with a very low frequency range (5-8Hz) and short pulse width. Between January 2015 to February 2017, the FTPD technique was used in 37 procedures (7 NLP, 16 RIRS, 12 URS, 2 cystolithotomies), with a Ho:YAG laser (Lumenis Pulse 120H®, Tel-Aviv, Israel). Maximum power used: 24W (3J/8Hz) with fibres of 365µ and 273µ (URS, RIRS), and 32W (4J/8Hz) with fibres of 550µ (NLP, cystolithotomy). RESULTS: Strategic improvement was achieved in all cases using the TFPD technique to continue the endolithotripsy or remove fragments. No complications were recorded after the use of this method. CONCLUSIONS: FTPD can be considered a complementary option in combination with the basic methods of fragmentation and pulverisation. In our experience, it constitutes significant progress in optimising the performance of Ho:YAG laser endolithotripsy.
