Persistent Shortness of Breath in Post-COVID-19 Patients: Inducible Laryngeal Obstruction Can Be a Cause.
J Voice
; 2024 Feb 22.
Article
en En
| MEDLINE
| ID: mdl-38395655
ABSTRACT
BACKGROUND:
Inducible laryngeal obstruction (ILO) is the adduction of the true vocal folds during inspiration or, less frequently, expiration. Its etiology is unknown.PURPOSE:
This study aimed to identify ILO as a possible cause of shortness of breath (SOB) in post-COVID-19 patients.METHODS:
A retrospective study was conducted on 59 post-COVID-19 adults complaining of SOB. We collected the cases' clinical and chest imaging data, including demographic data, pulmonary function test (PFT), CT chest, and laryngeal endoscopic examination. A visual score was used to assign the severity of the glottic obstruction. The grades of this score ranged from 0 (complete patency) to 3 (almost complete closure).RESULTS:
ILO was detected in 8 out of 59 cases (13.5%). Two cases out of eight had glottic closure grade 1, while five cases had glottic closure grade 2, and one had glottic closure grade 3. There was a positive correlation between ILO grades (the severity of glottic closure) and PFT results (the degree of upper airway restriction). PFTs in ILO have a specific pattern. It was typical for the expiratory loop to be normal and the inspiratory loop to be flattened.CONCLUSION:
ILO is a possible cause of SOB in post-COVID-19 adult cases. It should be considered during evaluation and management.
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Bases de datos:
MEDLINE
Idioma:
En
Revista:
J Voice
Asunto de la revista:
OTORRINOLARINGOLOGIA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Egipto