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Titolo:
Nd-YAG laser damage to metal and silicone endobronchial stents - Delineation of margins of safety using an in vitro experimental model
Autore:
Dalupang, JJ; Shanks, TG; Colt, HG;
Indirizzi:
Univ Calif San Diego, Intervent Pulm Serv, Pulm & Crit Care Med Div, La Jolla, CA 92037 USA Univ Calif San Diego La Jolla CA USA 92037 ed Div, La Jolla, CA 92037 USA
Titolo Testata:
CHEST
fascicolo: 3, volume: 120, anno: 2001,
pagine: 934 - 940
SICI:
0012-3692(200109)120:3<934:NLDTMA>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
FLEXIBLE BRONCHOSCOPY; MANAGEMENT; STENOSIS; AIRWAY;
Keywords:
bronchoscopy; complications; laser physics; laser/tissue interactions; metal stents; Nd-YAG laser resection; power density; silicone stents;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
31
Recensione:
Indirizzi per estratti:
Indirizzo: Colt, HG Univ Calif San Diego, Intervent Pulm Serv, Pulm & Crit Care Med Div, 9310 Campus Point Dr, La Jolla, CA 92037 USA Univ Calif San Diego 9310 Campus Point Dr La Jolla CA USA 92037 A
Citazione:
J.J. Dalupang et al., "Nd-YAG laser damage to metal and silicone endobronchial stents - Delineation of margins of safety using an in vitro experimental model", CHEST, 120(3), 2001, pp. 934-940

Abstract

Study objective: To identify margins of safety within which bronchoscopic Nd-YAG laser resection can be performed without damaging indwelling tracheobronchial stents. Design: Experimental in vitro study simulating a patient-care environment. Methods: Uncovered and covered metal Wallstent (Schneider; Zurich, Switzerland) and Dumon (Bryan Corporation; Woburn, MA) silicone stents were deployed in the tracheobronchial tree of a ventilated and oxygenated (fraction ofinspired oxygen, 40%) heart-lung block of a dead canine. Rigid bronchoscopic Nd-YAG (1,064 nm) laser procedures were performed in order to deliver laser energy using fiber-to-target distances of 10 mm and 20 mm, and noncontact, continuous-mode, 1-s pulses at power settings of 10 W, 30 W, and 40 W. The major outcome measure was laser-induced stent damage, defined as discoloration, ignition, or breakage. This was assessed using six power densities: 75 W/cm(2), 172 W/cm(2), 225 W/cm(2), 300 W/cm(2), 518 W/cm(2), and 690 W/cm(2). Results: The uncovered Wallstent and the silicone stent remained intact atpower densities of 75 W/cm(2) (10 W, 20 mm) and 172 W/cm(2) (10 W, 10 mm),but were damaged at power densities > 225 W/cm2 (30 W, 20 mm). The coveredWallstent was damaged at all power densities tested. Conclusion: Uncovered Wallstent and silicone stents are not damaged when Nd-YAG laser energy is delivered using power densities less than or equal to172 W/cm(2) (10 W, 10 mm). Covered Wallstents, however, had a high likelihood of ignition at all power densities studied.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 05:17:37