Evidence map›Paper›PMID 40750886›Full record

Observational studyBMC surgery2025

The effect of postoperative weight loss on difficult intubation in bariatric surgery patients: a prospective observational study.

Bahar Uslu Bayhan, Kazım Ersin Altınsoy

Abstract readObservational Study
In one paragraph

Observational study in BMC surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. Review
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

2 authors.

Bahar Uslu BayhanDepartment of Anesthesia and Reanimation, Gaziantep City Hospital, Gaziantep, Turkey.ORCID http://orcid.org/0009-0009-3052-2604
Kazım Ersin AltınsoyDepartment of Emergency Medicine, Gaziantep City Hospital, Gaziantep Islam Science and Technology University, Gaziantep, Turkey. ersinaltinsoy@gmail.com.ORCID http://orcid.org/0000-0002-5707-7645

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveAnatomical changes related to obesity-such as increased neck circumference, limited neck mobility, and excess soft tissue-may obstruct glottic visualization and increase the risk of difficult intubation. This study aims to evaluate whether weight loss following bariatric surgery leads to a measurable improvement in airway parameters, particularly the modified Cormack-Lehane (MCL) score.

methodsIn this prospective observational study, 129 patients undergoing bariatric surgery were included. Preoperative assessments included BMI, neck circumference, neck mobility, snoring score, modified Mallampati score (MMS), and MCL score. Postoperative reassessments were conducted at the 1st, 3rd, 6th, and 9th months. ROC curve analysis was performed to evaluate the predictive value of preoperative parameters for difficult intubation.

resultsNeck mobility was found to be significantly associated with both difficult airway (p < 0.001) and difficult intubation (p = 0.000) based on univariate analysis. Significant reductions were observed in BMI, neck circumference, MMS, and MCL scores over the follow-up period (all p < 0.001). Difficult intubation incidence decreased from 10.9% at baseline to 2.3% at the 9th month. ROC analysis revealed that the preoperative modified Cormack-Lehane (MCL) score had the highest predictive value for difficult intubation, with an AUC of 0.975, sensitivity of 88.4%, and specificity of 84.6%.

conclusionWeight loss following bariatric surgery results in measurable improvement in airway classification scores and reduces the incidence of difficult intubation. These findings support the value of postoperative airway reassessment in obese patients prior to subsequent anesthetic procedures.

Indexed as

Bariatric SurgeryIntubation, IntratrachealObesity, MorbidWeight LossAdultFemaleHumansMaleMiddle AgedPostoperative PeriodProspective StudiesROC CurveBariatric surgeryCormack-Lehane scoreDifficult airwayMallampati scoreObesity

Identifiers

PMID40750886
PMCPMC12315392

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Registered trials

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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.