Effect Of Left Head Rotation On Glottic View During Video Laryngoscopy In Obese Adults
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Difficult Airway, Obesity Difficult Airway Airway Management. Basic parameters: 18 years — 65 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Effect of Left Head Rotation Manoeuvre on Glottic View as Assessed With Percentage of Glottic Opening (POGO) Score During Video Laryngoscopy in Obese Adult Patients: A Prospective Observational Study
Overview
This study aims to evaluate whether the Left Head Rotation (LeHeR) maneuver improves visualization of the vocal cords during video laryngoscopy in obese adult patients undergoing general anesthesia. Obesity is associated with increased difficulty in airway management due to excess upper airway soft tissue and altered anatomy, which may impair visualization during intubation. In this prospective observational study, 50 adult patients with a body mass index (BMI) ≥30 kg/m² will undergo video laryngoscopy using a C-MAC D-blade. The glottic view will be assessed using the Percentage of Glottic Opening (POGO) score in the standard sniffing position and after rotating the head 45 degrees to the left (LeHeR maneuver). A difference in POGO score between the two positions will be analyzed. Secondary outcomes include ease of intubation, number of attempts, time to successful intubation, and occurrence of complications such as desaturation or airway trauma. The study is expected to determine whether the LeHeR maneuver is a simple and effective technique to improve airway visualization in obese patients.
Primary outcome measures
- Change in Percentage of Glottic Opening (POGO) Score between Sniffing Position and Left Head Rotation [Time frame: Baseline during induction of anaesthesia at the time of video laryngoscopy on Day 1 (single intra-operative assessment)]
Secondary outcome measures (5)
- Time to Successful Intubation [Time frame: During induction of anesthesia on Day 1]
- Ease of Intubation [Time frame: During tracheal intubation on Day 1]
- Number of Intubation Attempts [Time frame: During tracheal intubation on Day 1]
- Requirement of Airway Adjuncts [Time frame: During tracheal intubation on Day 1]
- Incidence of Peri-intubation Complications [Time frame: During induction of anesthesia and tracheal intubation on day 1]
Eligibility criteria
Inclusion criteria
- Adult patients aged 18-65 years
- Body mass index (BMI) ≥30 kg/m²
- ASA physical status I-III
- Scheduled for elective surgical procedures under general anesthesia requiring endotracheal intubation
Exclusion criteria
- Anticipated need for nasal intubation
- Facial or upper airway pathology preventing laryngoscope insertion
- Cervical spine instability or contraindication to head movement
- Pregnant patients
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Case-control
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT07590739 · MoH/CSR/26/31800