Excessive dynamic airway collapse: A condition behind the veil

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World Journal of Methodology

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2222-0682

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World J Methodol. Mar 20, 2026; 16(1): 108381
Published online Mar 20, 2026. doi: 10.5662/wjm.v16.i1.108381

Table 2 FEMOS classification of excessive dynamic airway collapse

Components	Grade
Components	I (normal)	II (mild)	III (moderate)	IV (severe)
Functional class	Asymptomatic	Symptomatic on exertion	Symptomatic with regular activity	Symptomatic at rest
Extent	No abnormality	Focal	Multifocal	Diffuse
Morphology	Crescent
Origin	Idiopathic or secondary
Severity	0%-50% EAC	50%-75% EAC	75%-100% EAC	100% EAC with airway walls making contact

EAC: Esophageal adenocarcinoma.

Citation: Paudyal V, Thapa R, Itani A, Sharma M, Rayamajhi R, Ratnani I, Surani S. Excessive dynamic airway collapse: A condition behind the veil. World J Methodol 2026; 16(1): 108381
URL: https://www.wjgnet.com/2222-0682/full/v16/i1/108381.htm
DOI: https://dx.doi.org/10.5662/wjm.v16.i1.108381

Paudyal V, Thapa R, Itani A, Sharma M, Rayamajhi R, Ratnani I, Surani S. Excessive dynamic airway collapse: A condition behind the veil. World J Methodol 2026; 16(1): 108381 [PMID: 41809150 DOI: 10.5662/wjm.v16.i1.108381]

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