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Letter to the editor in response to Hoskote Corrected formula for rectangular area ratio (RAR), a parameter used to quantify airflow limitation on expiratory flow-volume curves Respiratory Medicine 2022; 204: 107032

RESPIRATORY MEDICINE (2023)

Corrected formula for rectangular area ratio (RAR), a parameter used to quantify airflow limitation on expiratory flow-volume curves

Sumedh S. Hoskote

Summary: This study reveals that the formula used in the original research to calculate the rectangular area ratio (RAR) is inaccurate and presents a correct formula. The implications of this study extend to the validity of data in the original paper and other studies using the same formula.

RESPIRATORY MEDICINE (2022)

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Article Physiology

Dynamic airway function during exercise in COPD assessed via impulse oscillometry before and after inhaled bronchodilators

Nicholas B. Tiller et al.

Summary: This study utilized impulse oscillometry (IOS) to assess dynamic changes in airway function during exercise in COPD patients before and after inhaled bronchodilators. Strong correlations were found among IOS variables, dynamic hyperinflation, and changes in the shape of the expiratory flow-volume curve. Exercise-induced increases in airway resistance and decreases in reactance in COPD patients were ameliorated by inhaled bronchodilators.

JOURNAL OF APPLIED PHYSIOLOGY (2021)

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Article Physiology

Effect of tiotropium on spontaneous expiratory flow-volume curves during exercise in GOLD 1-2 COPD

Janos Porszasz et al.

RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY (2018)

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Article Physiology

Relation of concavity in the expiratory flow-volume loop to dynamic hyperinflation during exercise in COPD

Janos Varga et al.

RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY (2016)

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Article Cardiac & Cardiovascular Systems

Breath-by-breath quantification of progressive airflow limitation during exercise in COPD: A new method

Shuyi Ma et al.

RESPIRATORY MEDICINE (2010)

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Letter to the editor in response to Hoskote Corrected formula for rectangular area ratio (RAR), a parameter used to quantify airflow limitation on expiratory flow-volume curves Respiratory Medicine 2022; 204: 107032

相关参考文献

Corrected formula for rectangular area ratio (RAR), a parameter used to quantify airflow limitation on expiratory flow-volume curves

Dynamic airway function during exercise in COPD assessed via impulse oscillometry before and after inhaled bronchodilators

Effect of tiotropium on spontaneous expiratory flow-volume curves during exercise in GOLD 1-2 COPD

Relation of concavity in the expiratory flow-volume loop to dynamic hyperinflation during exercise in COPD

Breath-by-breath quantification of progressive airflow limitation during exercise in COPD: A new method

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