NCT07894692Completed
Association of WWI With Difficult Intubation
Association of Weight-Adjusted Waist Index With Difficult Intubation: A Prospective Observational Cohort Study
Source: ClinicalTrials.gov · Last updated 26 Oct 2026
Brief summary (registry, in English)
Difficult intubation remains a clinically significant challenge in anesthetic practice, particularly among patients with obesity and altered body composition. Traditional predictors such as BMI and neck circumference have limitations in accurately identifying at-risk patients. The weight-adjusted waist circumference index (WWI), introduced by Park et al., provides a measure of age-related changes in body composition, including loss of muscle mass and retention or increase in fat mass. Some researchers have proposed a cut-off value of 10.4 cm/√kg in men and 10.5 cm/√kg in women to identify unhealthy body composition. WWI provides a clearer picture of fat distribution, especially in individuals with varying body sizes, making it a more reliable tool for assessing health risks related to abdominal fat. After a thorough literature review, studies correlating WWI with DI remain limited. Therefore, the present study aimed to assess the correlation between WWI and DI in 50 patients scheduled for elective surgeries requiring endotracheal intubation under direct laryngoscopy.
- Status (registry)
- Completed
- Study type
- Observational
- Enrollment
- 50 (actual)
- First submitted
- 15 Jun 2026
- Start date
- 1 Nov 2025
- Primary completion date
- 25 Mar 2026
- Lead sponsor
- Cairo University
- Diseases
- Obesity
- NCT number
- NCT07894692
What you commit to
- Study type: Observational
- Participants enrolled: 50
- From 1 Nov 2025 to the primary completion date, 25 Mar 2026
- 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
- Patients' refusal.
- Patients with a history of difficult intubation.
- Patients with obstructive sleep apnea.
- Emergency surgeries
- Patients with known or suspected airway pathology (e.g., tumors, trauma)
- Syndrome-related difficult airways.
- Temporomandibular joint (TMJ) ankylosis.
- Traumatic facial injuries.
- Facial burns.
- Pregnant.
- Conditions with reduced functional residual reserve e.g. moderate to severe ascites or preoperative SpO2 at room air \<95%.
- Cervical spine diseases
Who the study is looking for
- Patients scheduled for elective surgical procedures requiring endotracheal intubation under general anesthesia using direct laryngoscopy.
Age in the registry: 18 years to - · 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 Alainy hospital Coordinator of this site? Confirm its status | Cairo | Egypt | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.