Are We Cutting Ourselves Short? Laser Lithotripsy Performance Based on Differences in Fiber-tip Preparation.
Urology
; 134: 79-83, 2019 Dec.
Article
em En
| MEDLINE
| ID: mdl-31476349
ABSTRACT
OBJECTIVE:
To better understand the impact of laser fiber-tip configuration on lithotripsy performance, we undertook an in vitro study comparing 3 fiber-tip configurations (1) new (single-use), (2) cleaved (reusable), and (3) coated (cut with scissors).METHODS:
Lithotripsy was performed using a HoYAG laser utilizing fragmentation (1 Jâ¯×â¯10 Hz) and dusting (0.5 Jâ¯×â¯20 Hz) settings. BegoStones were fragmented with a laser fiber advancing at a speed of 1 mm/s (220 seconds of activation). Three fiber-tip configurations were tested new single-use standard (242 µm core) and cleaved (272 µm core), compared to the same fiber-tip coated/cut flush with scissors, respectively. Study outcome was difference in stone mass before and after each experiment. Power output was measured using a power meter.RESULTS:
Fragmentation for new or cleaved fibers was greater than the coated/cut flush fiber-tip (P <.05). For 1 Jâ¯×â¯10 Hz and 0.5 Jâ¯×â¯20 Hz settings, fragmentation was 59% and 75% higher with new fiber-tip compared to the coated/cut flush fiber-tip, respectively. For 1Jâ¯×â¯10 Hz and 0.5 Jâ¯×â¯20 Hz settings, fragmentation was 51% and 45% higher with cleaved fiber-tip compared to the coated/cut flush fiber-tip, respectively. Power output at the end of laser activation was higher for new and cleaved fiber-tips.CONCLUSION:
New and cleaved laser fibers demonstrated superior lithotripsy performance compared to fibers that were coated/cut flush with scissors. Cutting single-use laser fibers risks damaging the fiber-tip which can disperse the energy and reduce lithotripsy efficiency.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cálculos Urinários
/
Litotripsia a Laser
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Desenho de Equipamento
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Lasers de Estado Sólido
Limite:
Humans
Idioma:
En
Revista:
Urology
Ano de publicação:
2019
Tipo de documento:
Article