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Effects of tip‐manipulated stylet angle on intubation using the GlideScope ® videolaryngoscope in children: A prospective randomized controlled trial
Author(s) -
Lee JiHyun,
Cho SungAe,
Choe HyunWoo,
Ji SangHwan,
Jang YoungEun,
Kim EunHee,
Kim JinTae,
Kim HeeSoo
Publication year - 2021
Publication title -
pediatric anesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.704
H-Index - 82
eISSN - 1460-9592
pISSN - 1155-5645
DOI - 10.1111/pan.14206
Subject(s) - medicine , intubation , stylet , anesthesia , interquartile range , confidence interval , endotracheal tube , tracheal intubation , visual analogue scale , area under the curve , surgery
Background An optimal endotracheal tube curve can be a key factor in successful intubation using the GlideScope videolaryngoscope. Aims This study aimed to evaluate the effects of tube tip‐modified stylet curve on the intubation time in children. Methods Children aged 1‐5 years were randomly assigned to either the standard curve (group S, n = 60) or tip‐modified curve (group T, n = 60) groups. In group S, the endotracheal tube curve was similar to that in the GlideScope. In group T, a point approximately 1.5 cm from the tube tip was additionally angled to the left by 15°‐20°. The primary outcome was the total intubation time, and the secondary outcomes were incidence of successful intubation in the first attempt, number of additional manipulations of the stylet curve, and visual analog scale (VAS) score for the easiness of intubation. Results The mean total intubation time was significantly longer in group S than that in group T (13.9 [10.8] vs. 9.0 [3.4] sec, mean difference, 4.9 s; 95% confidence interval [CI], 2.0‐7.8; p = .001). All patients in group T were successfully intubated in the first attempt, whereas those in group S were not (100% vs. 93.3%, relative risk [RR], 0.11; 95% CI, 0.01‐2.02; p = .1376). Three patients in group S could be intubated after modifying the ETT curve similar to that in group T. Operators reported that tracheal intubation was easier in group T than in group S (median [interquartile range] for VAS; 1 [1‐2] vs. 2 [1‐3]; p < .001). Conclusions Having additional angle of the endotracheal tube tip to the left could be a useful technique to facilitate directing and advancing endotracheal tube into the vocal cords.