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Observing the distance between chest notch and chin and correlating with ease of airway securing in adult patients.

Sternomental Distance Ratio as a Predictor for Difficult Intubation in Adult Surgical Patients Undergoing Endotracheal Intubation: A Observational Study - NIL

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2025/10/096719
Enrollment
196
Registered
2025-10-31
Start date
Unknown
Completion date
Unknown
Last updated
2025-11-17

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

Conditions

Health Condition 1: 4- Measurement and Monitoring

Interventions

Intervention1: nil: nil Control Intervention1: Cormack Lehane Grade: It is the best view seen by the intubating person during laryngoscopy.

Sponsors

SRM Institute Of Science And Technology
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Patients undergoing Elective surgical procedure requiring tracheal intubation, ASA physical status I–III, Patient providing written consent to participate in the study

Exclusion criteria

Exclusion criteria: Patients with Known airway abnormalities, patients with limited mouth opening, Facial deformities or prior head and neck surgeries, Edentulous patients, Pregnant patients, Unwilling Patients

Design outcomes

Primary

MeasureTime frame
The outcome of this study is to evaluate the diagnostic accuracy of the Sternomental Distance Ratio (SMDR) in predicting difficult intubation. This will be assessed by calculating the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of SMDR compared to the Modified Cormack-Lehane (MCL) grading system. The study aims to determine an optimal cutoff value for SMDR that maximizes predictive performance. Timepoint: Measured preoperatively (for SMDR) and during intubation (for Cormack–Lehane grade)

Secondary

MeasureTime frame
To assess the correlation of sternomental distance ratio with the number of intubation attempts and time taken for successful intubationTimepoint: During the intubation procedure until successful placement of the endotracheal tube

Countries

India

Contacts

Public ContactMOHAMED ASLAM S

Department of Anesthesia, SRM Institute of Science and Technology, Kattankulathur – 603203, Tamil Nadu, India

mirunalg@srmist.edu.in9486131643

Outcome results

None listed

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