[Agreement between pneumotachograph and PiKo-1 measurements of PEF and FEV1].

Autor: Rodríguez-Pascual L; Servicio de Neumología, Hospital General Yagüe, Burgos, Spain. luropa@separ.es, Cordero-Guevara J, Viejo-Bañuelos JL
Jazyk: Spanish; Castilian
Zdroj: Archivos de bronconeumologia [Arch Bronconeumol] 2006 Mar; Vol. 42 (3), pp. 144-7.
DOI: 10.1016/s1579-2129(06)60134-1
Abstrakt: Objective: To assess how well values for peak expiratory flow (PEF) and forced expiratory volume in 1 second (FEV1) agree when measured with the PiKo-1 device and with a conventional pneumotachograph.
Patients and Methods: This randomized, single-blind study included 40 patients who attended the clinic for lung function testing. The 2 measurement devices were the Masterlab pneumotachograph and the PiKo-1. A correction factor estimated by the manufacturer was applied to the measurements taken with the PiKo-1.
Results: The values obtained with the 2 devices differed by a mean of 5.8218 L/min for PEF (95% confidence interval [CI], -9.4809 to 21.1387) and 0.001 L for FEV1 (95% CI, -0.0616 to 0.0636). The intraclass correlation coefficient was 0.9652 (95% CI, 0.9336-0.9819) for PEF and 0.9876 (95% CI, 0.9761-0.9936) for FEV1.
Conclusions: The PiKo-1 is a simple and easy-to-use device that can be very useful for monitoring and assessing the severity of obstructive pulmonary diseases. The results must be corrected for altitude and the estimated correction factor should be applied.
Databáze: MEDLINE
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