Difficult Airway Prediction by Integrating STOP-BANG Criteria
Pakistan233 participantsStarted 2026-03-09
Plain-language summary
This study is being done to determine the diagnostic accuracy of the STOP-BANG questionnaire in predicting difficult mask ventilation and intubation among obese patients.
During the preoperative assessment, eligible participants will be enrolled in the study. The modified Mallampati score, thyromental distance, mouth opening, and upper lip bite tests will be performed along with STOP-Bang scores.
Later in the operating room, general anesthesia will be given, and bag-mask ventilation and intubation grade will be assessed and recorded. A correlation will be assessed between the difficult airway assessment findings, along with the STOP-BANG score and the bas-mask difficulty scores and intubation grades.
Who can participate
Age range
18 Years – 60 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Male \& Female aged 18-60 years.
* Body mass index 30 or more
* American Society of Anesthesiologists (ASA) status II-III.
* Scheduled for elective surgery under general anesthesia with endotracheal intubation.
Exclusion Criteria:
* Patients' refusal to participate.
* American Society of Anesthesiologists (ASA) IV \& V.
* Neuromuscular diseases or facial abnormalities.
* Cardiothoracic, head and neck, or emergency surgery.
* Previously diagnosed with OSA (by polysomnography) will be excluded.
* Any airway-related anatomical deformity (e.g., Down's syndrome).
* History of radiation exposure.
* Patient with mouth opening \<2 fingers
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Adequate Bag-Mask Ventilation
Timeframe: Only once, after giving general anesthesia but before an endotracheal tube is put in the trachea
2
Difficult Tracheal Intubation
Timeframe: Only once, after giving general anesthesia and 3-minute bag-mask ventilation for adequate muscle relaxation effect, then direct laryngoscopy will be performed to put the endotracheal tube in the trachea
Trial details
NCT IDNCT07493356
SponsorSindh Institute of Urology and Transplantation