The long-term stability of portable spirometers used in a multinational study of the prevalence of chronic obstructive pulmonary disease

Rogelio Pérez-Padilla, Juan Carlos Vázquez-García, María Nelly Márquez, José Roberto B Jardim, Julio Pertuzé, Carmen Lisboa, Adriana Muiño, María Victorina López, Carlos Tálamo, María Montes De Oca, Gonzalo Valdivia, Ana Maria B Menezes, Cesar Gomes Victora, Pedro Curi Hallal

Research output: Contribution to journalArticle

Abstract

BACKGROUND: We report the performance of an ultrasound-based portable spirometer (EasyOne) used in a population-based survey of the prevalence of chronic obstructive pulmonary disease, conducted in 5 Latin American cities: São Paulo, Brazil; México City, México; Montevideo, Uruguay; Santiago, Chile; and Caracas, Venezuela (the Latin American COPD Prevalence Study [PLATINO]). METHODS: During the survey period (which ranged from 3 months to 6 months in the various locations) we collected daily calibration data from the 70 EasyOne spirometers used in the 5 survey cities. The calibrations were conducted with a 3-L syringe, and the calibration data were stored in the spirometer's database. RESULTS: Ninety-seven percent of the calibration volumes were within ± 64 mL (2.1%) of the 3-L calibration signal. Excluding data from the first city studied (São Paulo), where one calibration syringe had to be replaced, 98% of the calibration checks were within ± 50 mL (1.7%). The measured volume was affected only minimally by the syringe's peak flow or emptying time. CONCLUSION: In these 70 EasyOne spirometers neither calibration nor linearity changed during the study. Such calibration stability is a valuable feature in spirometry surveys and in the clinical setting.

Original languageEnglish (US)
Pages (from-to)1167-1171
Number of pages5
JournalRespiratory Care
Volume51
Issue number10
StatePublished - Oct 2006
Externally publishedYes

Keywords

  • Calibration
  • Pulmonary function tests
  • Quality control
  • Reliability
  • Spirometry

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

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  • Cite this

    Pérez-Padilla, R., Vázquez-García, J. C., Márquez, M. N., Jardim, J. R. B., Pertuzé, J., Lisboa, C., Muiño, A., López, M. V., Tálamo, C., De Oca, M. M., Valdivia, G., Menezes, A. M. B., Victora, C. G., & Hallal, P. C. (2006). The long-term stability of portable spirometers used in a multinational study of the prevalence of chronic obstructive pulmonary disease. Respiratory Care, 51(10), 1167-1171.