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The Association Between Pulmonary Function Tests and Difficult Airway

The Association Between Pulmonary Function Tests and Difficult Airway

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02325076
Enrollment
202
Registered
2014-12-24
Start date
2013-12-31
Completion date
2015-02-28
Last updated
2016-02-11

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

Conditions

Airway Obstruction

Keywords

Airway Management, intubation, pulmonary function test

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 description

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.

Interventions

DEVICESpirodoc

A device to detect the physical condition of the lungs

Sponsors

Tokat Gaziosmanpasa University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
No

Inclusion criteria

* Patients whose admitted to the Gaziosmanpasa University, Medical Faculty, Anesthesiology and Reanimation outpatient unit * Patients whose will be planned to undertake a surgical operation under general anesthesia and those performed tracheal intubation to secure the airway. * An American Society of Anesthesiologists score of 1 or 2

Exclusion criteria

* Patient whose planned to undertake a surgical operation in the departments of ear-nose-throat, cardiac and vascular surgery, plastic and reconstructive surgery * Patients with a history of chronic obstructive lung diseases * Patients with a history of surgery on the neck * Patients with a history of mandibular surgery

Design outcomes

Primary

MeasureTime frame
Pulmonary function test differences between Mallampati 3 and 4 patientseighteen months

Secondary

MeasureTime frameDescription
Maximum mouth openingeighteen monthsMaximum mouth opening
Percentage of glottic openingeighteen monthsPercentage of glottic opening
Upper lip bite test scoreeighteen monthsUpper lip bite test score
Measurement of neck circumferenceeighteen monthsMeasurement of neck circumference
Cormack-Lehane gradeeighteen monthsCormack-Lehane grade
Thyromental distanceeighteen monthsThyromental distance
Mean inspiratory floweighteen months
The ratio of forced expiratory flow 25% to forced expiratory flow 75%eighteen months
Sterno-mental distanceeighteen monthsSterno-mental distance

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026