Preserved ratio impaired spirometry in a spirometry database
A Schwartz, N Arnold, B Skinner, J Simmering… - Respiratory …, 2021 - rc.rcjournal.com
BACKGROUND: Spirometry results can yield a diagnosis of normal air flow, air flow
obstruction, or preserved ratio impaired spirometry (PRISm), defined as a reduced FEV1 or
FVC in the setting of preserved FEV1/FVC. Previous studies have estimated the prevalence
of PRISm to be 7–12%. Our objective was to examine the prevalence of PRISm in a
spirometry database and to identify factors associated with PRISm. METHODS: We
performed a retrospective analysis of 21,870 spirometries; 1,616 were excluded because of …
obstruction, or preserved ratio impaired spirometry (PRISm), defined as a reduced FEV1 or
FVC in the setting of preserved FEV1/FVC. Previous studies have estimated the prevalence
of PRISm to be 7–12%. Our objective was to examine the prevalence of PRISm in a
spirometry database and to identify factors associated with PRISm. METHODS: We
performed a retrospective analysis of 21,870 spirometries; 1,616 were excluded because of …
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