Varying respiratory rate and IOS

Researchers from NYU / Bellevue hospitals in NYC found that elevated levels of breathing did, in fact, alter the IOS values and doctors and technicians must pay careful attention to this when looking at their data.

COPD. 2009 Jun;6(3):162-70. Distal airway function assessed by oscillometry at varying respiratory rate: comparison with dynamic compliance. Oppenheimer BW, Goldring RM, Berger KI. Division of Pulmonary and Critical Care Medicine, Department of Medicine, New York University School of Medicine/Bellevue Medical Center, New York, NY, USA. beno.oppenheimer@nyumc.org Elevated respiratory rate influences oscillometric parameters and must be considered when interpreting oscillometric data. IOS provides a non-invasive tool for assessment of distal airway function when spirometry is normal, which can be applied to various clinical settings including early diagnosis of COPD (GOLD stage 0), asthma in clinical remission and occupational/ environmental irritant exposure.

PMID: 19811371 [PubMed - in process]