Clinical Trial: The Association Between Pulmonary Function Tests and Difficult Airway

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: The Association Between Pulmonary Function Tests and Difficult Airway

Brief Summary: The airflow moving from mouth to the lungs, which can be measured by pulmonary function tests, may be affected by the anatomic disorders of the upper airway. Difficult airway can be considered as the anatomic disorder of the upper airway as well. Therefore, there can be a relationship between difficult airway and pulmonary function tests. The purpose of this study is to elucidate the association between the pulmonary function tests and difficult airway.

Detailed Summary:

After approval of the Gaziosmanpasa University Clinical Trials Ethics Committee, patients those admitted to the anesthesiology outpatient unit will informed about the study. And pulmonary function tests by using Spirodoc® will be performed to those willing to participate in the study. Measurements of the pulmonary function tests, and measurements belong to difficult airway will be recorded.

In the operating theatre, after induction of anesthesia, the difficult intubation measurements will be recorded.

Normality and variance will be tested using One Sample Kolmogorov-Smirnov test, skewness, kurtosis and histograms for each variable. Quantitative data will present as means and standard deviation, and qualitative data as frequency and percentage. Depending on these results, Spearman's correlation analysis will perform to show the association between pulmonary function tests and difficult airway measurements. Analyses were conducted using the Statistical Package for Social Sciences program (SPSS Inc., Chicago, IL), version 20.0. Statistical significance for all analyses was set at p < 0.05.


Sponsor: Tokat Gaziosmanpasa University

Current Primary Outcome: Pulmonary function test differences between Mallampati 3 and 4 patients [ Time Frame: eighteen months ]

Original Primary Outcome: Same as current

Current Secondary Outcome:

  • Cormack-Lehane grade [ Time Frame: eighteen months ]
    Cormack-Lehane grade
  • Maximum mouth opening [ Time Frame: eighteen months ]
    Maximum mouth opening
  • Percentage of glottic opening [ Time Frame: eighteen months ]
    Percentage of glottic opening
  • Upper lip bite test score [ Time Frame: eighteen months ]
    Upper lip bite test score
  • Measurement of neck circumference [ Time Frame: eighteen months ]
    Measurement of neck circumference
  • Sterno-mental distance [ Time Frame: eighteen months ]
    Sterno-mental distance
  • Thyromental distance [ Time Frame: eighteen months ]
    Thyromental distance
  • Mean inspiratory flow [ Time Frame: eighteen months ]
  • The ratio of forced expiratory flow 25% to forced expiratory flow 75% [ Time Frame: eighteen months ]


Original Secondary Outcome: Same as current

Information By: Tokat Gaziosmanpasa University

Dates:
Date Received: December 11, 2014
Date Started: December 2013
Date Completion:
Last Updated: February 10, 2016
Last Verified: February 2016