Algorithm for Spirometry Interpretation

Algorithm that aids in the interpretation of spirometry by presenting the criteria and flow-volume curves that define normal, obstructive, and restrictive patterns. It also includes an additional section with clinical cases to assist in the interpretation of spirometry in various contexts.

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Last updated:2025-02-05

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Algorithm that supports the interpretation of spirometry presenting the criteria and flow-volume curves that define a normal vs obstructive vs restrictive pattern

Spirometry interpretation

Normal

Small airway obstruction

Obstructive ventilation defect with positive bronchodilation

Severe obstructive ventilation defect with negative bronchodilation

Restrictive ventilation defect

Fixed obstruction and variable obstruction

Pulmonary vascular disease

https://cdn.publisher.gn1.link/jornaldepneumologia.com.br/pdf/Suple_139_45_11%20Espirometria.pdf

https://pubmed.ncbi.nlm.nih.gov/15023009/

https://pubmed.ncbi.nlm.nih.gov/14621232/

https://www.uptodate.com/contents/image?imageKey=PULM/96311