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CompletedNCT04140981Updated Dec 20, 2019

Comparison of Ultrasonographic and Anthropometric Measurements in Difficult Airway Evaluation

An observational study in Difficult Airway Intubation, sponsored by Kırıkkale University. Completed at 1 site in Turkey. Open to participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2019-12-20.

Sponsored by Kırıkkale University · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
127
Ages
18 Years to 75 Years
Sex
All
01

Study summary

In this study, anthropometric measurements (clinical measurements) will be applied in all patient groups; expected (to be difficult to provide airway patency as a result of detailed history, physical examination and evaluation tests performed by an experienced anesthesiologist), and unexpected (although it was not predicted that a difficulty was encountered). And ultrasounographic measurements will be applied in all patients. The aim of this study is to evaluate the predictive accuracy of ultrasonographic measurements.

Read the detailed description

In the preoperative period, the following clinical tests will be performed before the patient arrives in the operating room and when the patient arrives, the measurements will be made by ultrasonography.

  1. Mallampati classification
  2. Determination of mouth opening (interinsizer distance)
  3. Thyromental distance
  4. Sternomental distance

Preoperative evaluation of the patients and clinical results of the airway tests (mentioned above) will be recorded. The cervical soft tissue thickness will be measured and recorded at 3 levels (thyrohyoid membrane, vocal cord, hyoid bone) with the help of ultrasonography (mentioned above). In addition, since all patients will be under general anesthesia, laryngoscopic images (laryngoscopic evaluation according to Cormack Lehane classification) routinely recorded on the anesthesia follow-up sheet will be recorded.

02

Conditions studied

  • Difficult Airway Intubation
03

In context

Lead sponsor

Kırıkkale University is the lead sponsor of 112 studies on the registry; 25 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

ASA 1-2-3, 18-75 aged, patients undergoing general anesthesia

Inclusion criteria

  • patients under general anesthesia
  • ASA 1-2-3

Exclusion criteria

Exclusion Criteria:

  • Patients who will undergo emergency surgery,
  • pregnant women,
  • children,
  • patients who may have difficulty in airway management due to cervical instability,
  • patients with trauma or malignancy in the neck region
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
127 participants (actual)
Patient registry
No

Groups and cohorts

  • group 1

    difficult intubation according to antropometric measurements

    Device: ultrasounography

  • group 2

    not difficult intubation according to antropometric measurements

    Device: ultrasounography

  • group 3

    difficult intubation according to ultrasound measurements

    Device: ultrasounography

  • group 4

    not difficult intubation according to ultrasound measurements

    Device: ultrasounography

Interventions

  • Deviceultrasounography

    in preoperative period, airway ultrasounagraphy for all patients will be made

06

What researchers measure

Primary outcomes

  1. Cormack Lehane classification

    Laryngoscopic evaluation according to Cormack Lehane classification

    Time frame: during the intubation period

Secondary outcomes

  1. ultrasonographic measurement

    Preoperative ultrasonographic measurement will be made

    Time frame: 15 min before the operation

07

Study locations

1 site
  • Kırıkkale Univercity Faculty of Medicine Hospital
    Kırıkkale, 71450, Turkey
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 20, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04140981
Lead sponsor
Kırıkkale University
Responsible party
Kevser Peker (assitant professor, Kırıkkale University) — Principal investigator
First posted
Oct 28, 2019
Start date
Oct 1, 2019
Primary completion
Dec 1, 2019
Completion
Dec 1, 2019
Last update
Dec 20, 2019

Study contacts

Kevser Peker
principal investigator · Kırıkkale University Faculty of Medicine

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2019. You cannot join it, but the record below documents what was studied.

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