NCT07642206Not yet recruiting
Combined Ultrasound and Upper Lip Bite Test Assessment of Difficult Laryngoscopy in Obese Patients
Ultrasound-Measured Hyomental Distance Ratio Combined With the Upper Lip Bite Test as a Predictor of Difficult Laryngoscopy in Obese Patients: A Prospective Observational Study
Source: ClinicalTrials.gov · Last updated 12 Jun 2026
Brief summary (registry, in English)
The aim of this observational study is to evaluate the accuracy of the HMDR combined with the ULBT as a predictor of difficult laryngoscopy in obese patients undergoing elective surgery under general anesthesia, regarding: * Correlation of HMDR-ULBT values with Cormack-Lehane grades during laryngoscopy. * Comparison of HMDR-ULBT with standard HMDR in predicting difficult laryngoscopy.
- Status (registry)
- Not yet recruiting
- Study type
- Interventional
- Enrollment
- 134 (estimated)
- First submitted
- 7 Jun 2026
- Start date
- 1 Jul 2026
- Primary completion date
- 1 Feb 2027
- Lead sponsor
- Cairo University
- Diseases
- Obesity
- NCT number
- NCT07642206
What you commit to
- Study type: Interventional
- Planned participants: 134
- From 1 Jul 2026 to the primary completion date, 1 Feb 2027
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other illness
- History of maxillofacial trauma, surgery, or congenital facial anomalies affecting mandibular movement or neck anatomy.
- Patients with limited neck mobility (e.g., cervical spine disease or immobilization).
- Temporomandibular joint disorders or restricted mandibular mobility.
Other
- Known or suspected difficult airway requiring awake intubation.
- Pregnancy.
Who the study is looking for
- Adult obese patients aged 18 to 65 years.
- Both sexes.
- American Society of Anesthesiologists (ASA) physical status II- III.
- Body Mass Index (BMI) ≥ 30 kg/m² (classified as obese).
- Scheduled for elective surgical procedures requiring general anesthesia with endotracheal intubation.
- Ability to understand and provide informed written consent.
- Cooperative and able to perform the ULBT on command.
- Normal dentition (presence of upper and lower incisors to perform ULBT accurately).
Age in the registry: 18 years to 65 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Kasr Al-Ainy Hospital, Cairo University Coordinator of this site? Confirm its status | Cairo | Egypt | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.