Ultrasound Measured Hyomental Distance to Tongue Thickness Ratio as a Predictor of Difficult Intubation in Infants

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT06925165

Enrollment

Registered

2025-04-13

Start date

2025-01-29

Completion date

2025-07-29

Last updated

2025-04-13

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

Conditions

Ultrasound

Brief summary

Evaluation the role of ultrasound measured hyomental distance to tongue thickness ratio in predicting difficult intubation in infants

Detailed description

Sonographic assessment of the airway after induction of anesthesia and Master Degree Thesis / MFA/ISRO/ Faculty Of Medicine/ASU Page 6 intubation: All infants will be placed in a supine position with their heads slightly extended. Then, the low-frequency probe (curved) will be first placed under the chin in the midsagittal plane and adjusted to show a clear view of the entire tongue outline and the border of the mandible and hyoid bone on the screen. The image will be frozen and stored. On the image the tongue thickness will be measured, which is the maximum vertical distance from the sub mental skin to the tongue surface (Yao W, Wang B 2017). After that, the HMDE will be measured, which is the distance from the lower border of the mentum of the mandible to the upper border of the hyoid bone.

Interventions

None listed

Study design

Observational model

OTHER

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

1 Months to 12 Months

Healthy volunteers

Yes

Inclusion criteria

* Infants aged 1 to 12 months Both sexes. Physical status ASA I or II

Exclusion criteria

* Restricted mobility of temporomandibular joint * Absent anesthesia or surgical consent * Maxillofacial trauma or tumors * A large mass or scar under the chin

Design outcomes

Primary

Measure	Time frame	Description
role of ultrasound measured hyomental distance to tongue thickness ratio in predicting difficult intubation in infants.	2 to 3 minutes after induction of anaesthesia and intubation	Difficult intubation can be a significant life threatening problem in anesthesia which can lead to serious complications like hypoxia, aspiration, esophageal intubation, emergency surgical airway, cardiovascular instability, cardiac arrhythmias, ischemic encephalopathy, and death. In the study investigators will use hyomental distance and tongue thickness measured by ultrasound to suspect difficult intubation in infants aged 1 to 12 month.

Countries

Egypt

Outcome results