NC/TMD Ratio As a Difficult Airway Predictor in Obese Patients

Completed

• Conditions: Difficult / Failed Intubation

• Registration Number: NCT05735106
• Lead Sponsor: KRL Hospital, Islamabad

Brief Summary

To assess accuracy of NC/TM distance ratio in terms of sensitivity, specificity, negative predictive value (NPV) and positive predictive value (PPV) for predicting difficult intubation in obese patient with Intubation difficulty score (IDS) as gold standard.

Detailed Description

At Preanaesthesia clinic patients , neck circumference to Thyromental distance ratios of obese patients with BMI \>30Kg/m2 will be calculated and patients will be divided into two groups on the basis of Nc/TMD ratio as anticipated easy intubation ( NC/TMD\<5) And anticipated difficult intubation ( NC/TMD ≥5).

Intra-operatively, patients Intubation difficulty scale score will calculated and the data obtained from IDS score will be compared with NC/TMD ratio as a predictor of difficult Intubation and diagnostic accuracy of NC/TMD as a reliable indicator of difficult intubation in obese patients will be calculated by statistical analysis.

Study Timeline

• Study Start: 2021-10-21
• Primary Completion: 2022-04-21
• Study Completion: 2022-05-21
• Study First Submitted: 2023-02-09
• Study First Submitted QC: 2023-02-09
• Study First Posted: 2023-02-21
• Status Verified: 2024-10
• Last Update Submitted: 2024-10-08
• Last Update Posted: 2024-10-10

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 220

Inclusion Criteria

1. ASA physical status I to III
2. Body Mass Index (BMI) of 30kg/m2 or more
3. age 18-65 years

Exclusion Criteria

1. non consenting
2. ASA class greater than III,
3. patients undergoing general anesthesia without tracheal intubation or under regional anesthesia,
4. patients with upper airway pathology such as maxillofacial fractures, upper airway tumors or cervical spine fracture, obstetric patients, refusal of the patient, previous head and neck surgery or radiotherapy.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Predictability of difficult airway	During anaesthesia induction	At the preanaesthetic examination neck circumference to thyromental distance ratio will be caculated in obese patients with BMI ≥ 30KG/m2 and the predictability of difficult airway will be evaluated by statistical analysis

Trial Locations

Locations (1)

KRL Hospital; 🇵🇰 Islamabad, ICT, Pakistan