An observational study in Ultrasound, sponsored by Ain Shams University. Active, not recruiting at 1 site in Egypt. Open to participants aged 1 Month to 12 Months, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-04-13.
Sponsored by Ain Shams University · Observational
Evaluation the role of ultrasound measured hyomental distance to tongue thickness ratio in predicting difficult intubation in infants
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.
Ain Shams University is the lead sponsor of 1,932 studies on the registry; 433 are open to participants now.
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Infants aged 1 to 12 months
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Both sexes.
Physical status ASA I or II
Exclusion Criteria:
role of ultrasound measured hyomental distance to tongue thickness ratio in predicting difficult intubation in infants.
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.
Time frame: 2 to 3 minutes after induction of anaesthesia and intubation
Plan to share: Yes — all data will be shared once study is completed
Time frame: before 1/2026
Access criteria: free
No publications or documents are linked to this record.
Started Jan 2025 (actual). Primary completion is estimated for Jul 2025, 6 months after the start.
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This study is active, not recruiting, as verified in Mar 2025. You cannot join it, but the record below documents what was studied.
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