Airway Ultrasound Assessment in the Prediction of Difficult Airway

Review of Classical Predictors and Role of Airway Ultrasound in the Prediction of Difficult Airway

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04816435

Enrollment

200

Registered

2021-03-25

Start date

2021-01-01

Completion date

2022-01-01

Last updated

2021-03-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Airway Complication of Anesthesia, Anesthesia Intubation Complication

Brief summary

To assess whether the thickness of pre-tracheal fat, greater than 28 mm, and measured by ultrasound, constitutes a reliable parameter in the prediction of a difficult airway.

Interventions

DIAGNOSTIC_TESTUltrasound test

Ultrasound evaluation of airway

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Patients risk ASA I-IV * Non-urgent surgery under general anesthesia with orotracheal intubation * Acceptance to participate and grant written consent

Exclusion criteria

* Urgent surgery * Patients with a history of craniocervical pathology (trauma, tumor, malformations) * Pregnancy * Patient Refusal

Design outcomes

Primary

Measure	Time frame	Description
Pretracheal fat thickness for intubation complexity	5 minutes	The pretracheal fat at the level of the vocal cords will be evaluated with ultrasound, to discern if a certain thickness is related to a difficult laryngoscopic vision (understood as cormack 3 or 4)

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 7, 2026