A randomised comparison of InnoScope and Macintosh laryngoscope in simulated difficult tracheal intubation in manikins.
Anaesthesia
; 68(2): 167-74, 2013 Feb.
Article
in En
| MEDLINE
| ID: mdl-23153175
ABSTRACT
We conducted a crossover randomised study to evaluate the performance of a novel optical stylet, the InnoScope, for tracheal intubation in simulated normal and difficult airways. Twenty-five anaesthetists attempted tracheal intubation on a SimMan 3G simulator using the InnoScope first followed by the Macintosh laryngoscope or vice versa. Three airway scenarios were tested (1) normal airway; (2) difficult airway with swollen pharynx; and (3) limited neck movement. In each scenario, the laryngeal view, duration of and success rate for tracheal intubation were recorded. Compared with the Macintosh laryngoscope, the use of InnoScope increased the percentage of glottic opening seen by 17% in normal airway, 23% in the difficult airway and 32% with limited neck movement, p < 0.01. Despite this better laryngeal view, successful tracheal intubation achieved with the InnoScope (88.0%) was lower than that for the Macintosh laryngoscope (98.7%), p = 0.008. Using the InnoScope, tracheal intubation during the first attempt was only successful in 48% of cases with difficult airway. In this scenario, the median (interquartile range [range]) duration of tracheal intubation was significantly longer with [corrected] InnoScope compared with the Macintosh laryngoscope, (70 (19-120 [15-120)] s vs 30 [21-58 (15-120)] s, [corrected] p = 0.01. We conclude that an improved laryngeal view with the use of the InnoScope did not translate into better conditions for tracheal intubation.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Laryngoscopes
/
Airway Obstruction
/
Intubation, Intratracheal
Type of study:
Clinical_trials
Language:
En
Journal:
Anaesthesia
Year:
2013
Document type:
Article
Affiliation country:
Hong Kong