Body plethysmography for measuring airway resistance in patients with bilateral vocal fold immobility.

Autor: Sairin ME; Department of Otorhinolaryngology, Head and Neck Surgery, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia., Mat Baki M; Department of Otorhinolaryngology, Head and Neck Surgery, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia. Electronic address: marinamatbaki@ppukm.ukm.edu.my., Manap RA; Respiratory Unit, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia., Puteh SEW; Community Health Department, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia., Azman M; Department of Otorhinolaryngology, Head and Neck Surgery, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia., Mohamed AS; Department of Otorhinolaryngology, Head and Neck Surgery, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia.
Jazyk: angličtina
Zdroj: Auris, nasus, larynx [Auris Nasus Larynx] 2020 Oct; Vol. 47 (5), pp. 842-848. Date of Electronic Publication: 2020 Apr 06.
DOI: 10.1016/j.anl.2020.03.004
Abstrakt: Objective: This study investigated the reliability of body plethysmography in comparison to spirometry in objectively measuring upper airway functions.
Methods: The study population consisted of 53 participants, 23 patients with BVFI after endolaryngeal laser posterior cordectomy and 30 healthy volunteers. All of them had body plethysmography (airway resistance, Raw), spirometry (ratio of forced expiratory flow at 50% to forced inspiratory flow at 50%, FEF 50 /FIF 50 and peak inspiratory flow, PIF), 6 min-walking-test (6MWT) and Medical Research Council (MRC) dyspnea scale measurements. The tests were repeated and reliability was evaluated using intraclass correlation (ICC) and Spearman correlation.
Results: The reliability of Raw was high with ICC of 0.92, comparable to the spirometry measurements: FEF 50 /FIF 50 (ICC = 0.72) and PIF (ICC = 0.97). The mean of Raw was significantly higher in patient group. A strong significant correlation between Raw and MRC dyspnea scale (r = 0.79; p<0.05) and a moderate negative correlation between Raw and 6MWT (r = 0.4; p<0.05) was demonstrated.
Conclusion: Body plethysmography (Raw) is a reliable tool in objective measurement of upper airway resistance that reflects the patient's perception of breathlessness. A larger number of participants are necessary to confirm this finding.
Competing Interests: Declaration of Competing Interest The funding of this study was provided by the Fundamental Grant of Faculty of Medicine of Universiti Kebangsaan Malaysia.
(Copyright © 2020. Published by Elsevier B.V.)
Databáze: MEDLINE
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