Glottic Width and Respiratory Flow in Patients With Various Lung Diseases

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT02460757

Enrollment

Registered

2015-06-02

Start date

2014-02-28

Completion date

Unknown

Last updated

2015-12-09

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

Conditions

Lung Diseases

Keywords

glottic movement, emphysema, copd, vocal cord

Brief summary

In this study the investigators examine the glottic width and the respiratory flow at rest in patients with various lung disease. The investigators postulated that a positive expiratory pressure is created through the narrowing of the glottic width in patients with hyperinflation.

Interventions

OTHERLaryngoscopy

Observation of glottic width in different arms

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* Clinical indication for a bronchoscopy * Minimum age of 18 years * Signed informed consent

Exclusion criteria

* Patients requiring mechanical ventilation during bronchoscopy * Disease of the larynx * Inability to breathe through the mouthpiece

Design outcomes

Primary

Measure	Time frame
Angle of the glottic width	18 Months

Countries

Germany

Outcome results

None listed

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