Skip to main content
OpenTrials
Completed

NCT Number: NCT05735106

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

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.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Difficult / Failed Intubation

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Observational

Primary location

KRL Hospital

Islamabad, ICT, 44090, Pakistan

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

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

Exclusion criteria

  • non consenting
  • ASA class greater than III,
  • patients undergoing general anesthesia without tracheal intubation or under regional anesthesia,
  • 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.

Treatment and study plan

Primary outcomes

  1. Predictability of difficult airway

    Time frame: 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

Sponsors and collaborators

Lead sponsor

KRL Hospital, Islamabad

Other

Registry information

Official study title

Neck Circumference to Thyromental Distance Ratio As a Reliable Indicator for Predicting Difficult Intubation in Obese Patients for Elective Surgery Under General Anesthesia

Important dates

Study start
2021
Primary completion
2022
Study completion
2022
First posted
Feb 21, 2023
Registry last updated
Oct 10, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.