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compare the ratio of height to thyromental distance with neck circumference to thyromental distance. This study focuses on non-obese patients to see which ratio predicts better. The goal is to find the simplest, most accurate way to foresee airway problems.

Comparison of ratio of body height to thyromental distance vs ratio of neck circumference to thyromental distance in prediction of difficult airway in non obese patients - Nil

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2025/08/092239
Enrollment
150
Registered
2025-08-04
Start date
Unknown
Completion date
Unknown
Last updated
2026-06-22

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

Conditions

Health Condition 1: O- Medical and Surgical

Interventions

Intervention1: Nil: Nil Intervention2: Nil: Observational

Sponsors

Department of Anaesthesiology School of medical sciences and research
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Patient having following criteria wil be included in the study Age between 18 to 60 years of either sex ASA class I II scheduled for surgery under general anaesthesia with endotracheal intubation

Exclusion criteria

Exclusion criteria: Patients having following criteria will be excluded from the study Head and neck deformity History of trauma or burn with scar over face and neck and upper part of chest Mass or tumor or oedema over neck or face or oral cavity Pathological restricted neck movement like in cervical spondylitis Severely restricted mouth opening like in lock jaw BMI more than 25kg per meter square Pregnant patient

Design outcomes

Primary

MeasureTime frame
To find out relationship between ratios of body height to thyromental distance vs ratio of neck circumference to thyromental distance in predicting difficult airwayTimepoint: 18 months—

Secondary

MeasureTime frame
To find out optimum cut-off value of both ratios to predict difficult airway To find out relationship of two ratios with other airway predictorsTimepoint: 18 months—

Countries

India

Contacts

Public ContactDr Shaista Jamil

School of medical sciences and research Sharda Hospital Sharda University

mahendra.kumar@sharda.ac.in8287188449

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Jun 29, 2026