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To study the effect of measurements of the face and neck on difficulty in seeing the larynx during anaesthesia in adults

Evaluation of thyromental height, ratio of height to thyromental distance and thyromental distance as predictors of difficult laryngoscopy (and difficult intubation) in adult patients

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2016/09/007313
Enrollment
300
Registered
2016-09-27
Start date
Unknown
Completion date
Unknown
Last updated
2021-11-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: - Health Condition 2: null- Difficult laryngoscopy

Interventions

Sponsors

Safdarjung Hospital
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: American Society of Anaesthesiologists physical status grade I or II adult patients, scheduled to undergo elective surgery under general anaesthesia with tracheal intubation.

Exclusion criteria

Exclusion criteria: 1. Patients with obvious abnormality of the airway requiring awake tracheal intubation 2. Post burn contracture neck, neck swelling 3. Interâ??incisor distance 4. Patients at increased risk of aspiration 5. Unstable cervical spine

Design outcomes

Primary

MeasureTime frame
To determine the prediction index (cut-off value) and validity indices for thyromental heightTimepoint: At time of laryngoscopy and intubation

Secondary

MeasureTime frame
1. To determine the validity indices for ratio of height to thyromental distance and thyromental distance for prediction of difficult laryngoscopy in adult patients. 2.To compare the thyromental height, ratio of height to thyromental distance and thyromental distance as predictors of difficult laryngoscopy in adult patients Timepoint: At time of laryngoscopy and intubation

Countries

India

Contacts

Public ContactSmita Prakash

Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India

drsunilprakash@gmail.com09810347125

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026