Signal-correction errors in the EasyOne Pro LAB multiple-breath washout device significantly impact outcomes in children and adults
2024; American Physiological Society; Volume: 136; Issue: 3 Linguagem: Inglês
10.1152/japplphysiol.00096.2022
ISSN8750-7587
AutoresMarc‐Alexander Oestreich, Florian Wyler, Christian Buess, Blaise Etter, Kathryn Ramsey, Philipp Latzin,
Tópico(s)Neonatal Respiratory Health Research
ResumoWe investigated the accuracy of the molar mass (MM) and CO 2 sensors of a commercial multiple-breath washout device (ndd Medizintechnik AG, Switzerland). We identified humidity and respiratory exchange ratio-dependent errors that in most measurements resulted in an overestimation of expired nitrogen concentrations, and consequently, MBW results. Functional residual capacity and lung clearance index decreased by 6.6% and 9.9%, respectively. Despite improved signal accuracy, the difference in FRC between the EOPL and body plethysmography increased.
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