Evidence map›Paper›PMID 27217284›Full record

ArticleBMJ open2016

Comparison of the force applied on oral structures during intubation attempts by novice physicians between the Macintosh direct laryngoscope, Airway Scope and C-MAC PM: a high-fidelity simulator-based study.

Taizo Nakanishi, Takashi Shiga, Yosuke Homma, Yasuaki Koyama, Tadahiro Goto

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.1field-weighted citation impact, top 22% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
  2. Observational
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Taizo NakanishiDepartment of Emergency Medicine, Fukui Prefectural Hospital, Fukui, Japan.
Takashi ShigaDepartment of Emergency Medicine, Tokyo Bay Urayasu/Ichikawa Medical Center, Noguchi Hideyo Memorial International Hospital, Urayasu, Japan.
Yosuke HommaDepartment of Emergency Medicine, Tokyo Bay Urayasu/Ichikawa Medical Center, Noguchi Hideyo Memorial International Hospital, Urayasu, Japan.ORCID 0000-0002-0473-9617
Yasuaki KoyamaDepartment of Emergency and Critical Care Medicine, University of Tsukuba Hospital, Tsukuba, Japan.
Tadahiro GotoDepartment of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
Fukui Prefectural Hospital · JPMassachusetts General Hospital · USUniversity of Tsukuba Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe examined whether the use of Airway Scope (AWS) and C-MAC PM (C-MAC) decreased the force applied on oral structures during intubation attempts as compared with the force applied with the use of Macintosh direct laryngoscope (DL).

designProspective cross-over study.

participantsA total of 35 novice physicians participated.

interventionsWe used 6 simulation scenarios based on the difficulty of intubation and intubation devices. OUTCOME MEASURES: Our primary outcome measures were the maximum force applied on the maxillary incisors and tongue during intubation attempts, measured by a high-fidelity simulator.

resultsThe maximum force applied on maxillary incisors was higher with the use of the C-MAC than with the DL and AWS in the normal airway scenario (DL, 26 Newton (N); AWS, 18 N; C-MAC, 52 N; p<0.01) and the difficult airway scenario (DL, 42 N; AWS, 24 N; C-MAC, 68 N; p<0.01). In contrast, the maximum force applied on the tongue was higher with the use of the DL than with the AWS and C-MAC in both airway scenarios (DL, 16 N; AWS, 1 N; C-MAC, 7 N; p<0.01 in the normal airway scenario; DL, 12 N; AWS, 4 N; C-MAC, 7 N; p<0.01 in the difficult airway scenario).

conclusionsThe use of C-MAC, compared with the DL and AWS, was associated with the higher maximum force applied on maxillary incisors during intubation attempts. In contrast, the use of video laryngoscopes was associated with the lower force applied on the tongue in both airway scenarios, compared with the DL. Our study was a simulation-based study, and further research on living patients would be warranted.

Indexed as

IncisorLaryngoscopesStress, MechanicalAdultClinical CompetenceCross-Over StudiesEquipment DesignFemaleHumansIntubation, IntratrachealLaryngoscopyMaleManikinsMaxillaProspective StudiesACCIDENT & EMERGENCY MEDICINEANAESTHETICSMEDICAL EDUCATION & TRAINING

Identifiers

PMID27217284
PMCPMC4885424
OpenAlexW2403479645

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.