scholarly journals Comparison of two different shapes of stylets for intubation with the McGrath MAC® video laryngoscope: a randomized controlled trial

2020 ◽  
Vol 48 (10) ◽  
pp. 030006052096295
Author(s):  
Hyunyoung Lim ◽  
Yun-Byeong Cha ◽  
Kyoung-Ho Ryu ◽  
Sung Hyun Lee ◽  
Eun-Ah Cho

Objective This study was performed to compare two different shapes of stylets, 60° and J-shaped stylets, for intubation using the McGrath MAC® video laryngoscope (MVL). Methods Two hundred twenty-two patients undergoing surgery under general anesthesia were randomly allocated to Group J (n = 111) or Group 60° (n = 111) and intubated using the MVL with the stylet bent into the allocated shape. The time to intubation (TTI) and other intubating profiles were compared between the groups. Multivariate regression analysis was used to determine the relationship between factors related to difficult intubation and TTI. Results The TTI was not different between the two groups. There were also no differences in the intubating profiles between the two groups. In both groups, the TTI was longer with a modified Mallampati score (mMS) of ≥3 and percentage of glottic opening (POGO) score of <50. In Group J, the TTI was longer with a body mass index (BMI) of ≥30 kg/m2. Conclusion The TTI during tracheal intubation with the MVL was not different between the two groups. The TTI was longer with an mMS of ≥3 and POGO score of <50. In Group J, the TTI was longer with a BMI of ≥30 kg/m2.

2021 ◽  
Author(s):  
Yu Yamamoto ◽  
Shohei Kimura ◽  
Hideki Kuniyoshi ◽  
Takanori Hiroe ◽  
Takako Terui ◽  
...  

Abstract BackgroundDuring endotracheal intubation training, only providing verbal guidance to students may result in inadequate recognition of the inner larynx and cause delays in mastering endotracheal intubation. Therefore, we introduced a deliberate practice approach to the education of residents in endotracheal intubation. For this purpose, a video laryngoscope was used to give the residents detailed feedback of the anesthesiology faculty. We hypothesized that if the anesthesiology faculty could provide sufficient and precise feedback of the larynx through the video monitor, the residents’ intubation skills would be retained for a more extended period.MethodsThis cluster randomized controlled study enrolled first-year residents who completed a two-month rotation at our department. Each rotation group (2–4 residents) was assigned to the Macintosh laryngoscope (ML) group or the McGRATH MAC video laryngoscope (MML) group. Endotracheal intubation skills were evaluated on a simulated mannequin immediately after the rotation, three months later, and six months later. The primary endpoint was the time required for intubation. The secondary endpoint was the percentage of glottic opening (POGO) score.ResultsForty-six residents participated in this study and were assigned to the ML group (n = 23) or the MML group (n = 23). The time required for intubation was significantly shorter in the MML group than in the ML group. The POGO score did not show any significant differences between the two groups; however, the POGO score of the MML group had a relatively narrower confidence interval than the ML group.ConclusionsWhen comparing endotracheal intubation training using the Macintosh laryngoscope and video laryngoscope, the McGRATH MAC video laryngoscope shortened the intubation procedure and facilitated long-term skill retention.Trial registrationClinical registry and trial number, URL: https://www.umin.ac.jp, UMIN000036643 date of registration: 2019/05/03, This study was retrospectively registered.


2018 ◽  
Author(s):  
Hyun-Young Lim ◽  
Mi-Suk Lee ◽  
Kyoung-Ho Ryu ◽  
Sung Hyun Lee ◽  
Eun-Ah Cho

Abstract Background: Adequate shapes for videolaryngoscopes are important for safer, faster, and successful intubation. The aim of this study was to compare two different shapes of stylets, the 60º and J-shape stylets, for intubation with the McGrath MAC®. Methods: In this multicenter, prospective, randomized controlled study, patients undergoing elective surgery under general anesthesia were randomly assigned into the 60º group or the J group. After anesthetic induction, subjects in both groups were intubated with an endotracheal tube bent into a specific shape according to the group allocation. Time to intubation, difficulty of intubation, glottic view grade, use of external manipulation, and number of intubation attempts were recorded. Results: One hundred and eight patients in the J group and 110 patients in the 60º group were enrolled. Time to intubation in the J group [23.1 (20.6-28.0)] was not different from the 60º group [24.8 (20.5-28.3), P = 0.623). There were no differences in difficulty of intubation, glottic view grade, use of external manipulation, and number of intubation attempts between the two groups. Conclusions: Adding extra curvature to the tube to resemble the shape of the blade did not improve the intubation conditions of the McGrath MAC®.


2021 ◽  
pp. 1-7
Author(s):  
Alastair J. Flint ◽  
Kathleen S. Bingham ◽  
Nicholas H. Neufeld ◽  
George S. Alexopoulos ◽  
Benoit H. Mulsant ◽  
...  

Abstract Background Little is known about the relationship between psychomotor disturbance (PMD) and treatment outcome of psychotic depression. This study examined the association between PMD and subsequent remission and relapse of treated psychotic depression. Methods Two hundred and sixty-nine men and women aged 18–85 years with an episode of psychotic depression were treated with open-label sertraline plus olanzapine for up to 12 weeks. Participants who remained in remission or near-remission following an 8-week stabilization phase were eligible to participate in a 36-week randomized controlled trial (RCT) that compared the efficacy and tolerability of sertraline plus olanzapine (n = 64) with sertraline plus placebo (n = 62). PMD was measured with the psychiatrist-rated sign-based CORE at acute phase baseline and at RCT baseline. Spearman's correlations and logistic regression analyses were used to analyze the association between CORE total score at acute phase baseline and remission/near-remission and CORE total score at RCT baseline and relapse. Results Higher CORE total score at acute phase baseline was associated with lower frequency of remission/near-remission. Higher CORE total score at RCT baseline was associated with higher frequency of relapse, in the RCT sample as a whole, as well as in each of the two randomized groups. Conclusions PMD is associated with poorer outcome of psychotic depression treated with sertraline plus olanzapine. Future research needs to examine the neurobiology of PMD in psychotic depression in relation to treatment outcome.


Author(s):  
Zinab Adelmand ◽  
Fatemeh Adelmand ◽  
Tahmineh Adelmand ◽  
Maryam Zarnaghash

<p>The aim of this study was to investigate the effect of social capital on 15-to-19-year-old juveniles’ delinquency. Regarding this objective, Yang internet addiction questionnaire (1996) was used to collect the data. This questionnaire contains 20questions classified in some groups. Results of Multivariate Regression Analysis for explaining delinquency indicate that among the variables selected in the analytical model of this study, 5 factors(religious life style, modern life style (friends network), family control, communications (the relationship between social capital and the groups), the respondents’ fathers’ income) have had a significant effect on delinquency and have remained in the equation. After entering these five variables, the entry of new variables have been stopped. In fact, these five variables totally explain 36/1% changes of the dependent variable (delinquency.</p><p> </p><p>Keywords: delinquency, Social Capital</p>


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