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Research ArticleOriginal Contributions

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 and the Latin American COPD Prevalence Study (PLATINO) Team
Respiratory Care October 2006, 51 (10) 1167-1171;
Rogelio Pérez-Padilla
Instituto Nacional de Enfermedades Respiratorias, México City, México.
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  • For correspondence: [email protected]
Juan Carlos Vázquez-García
Instituto Nacional de Enfermedades Respiratorias, México City, México.
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María Nelly Márquez
Universidad de la República, Montevideo, Uruguay.
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José Roberto B Jardim
Universidade Federal de São Paulo, São Paulo, Brazil.
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Julio Pertuzé
Pontificia Universidad Católica de Chile, Santiago, Chile.
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Carmen Lisboa
Pontificia Universidad Católica de Chile, Santiago, Chile.
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Adriana Muiño
Universidad de la República, Montevideo, Uruguay,
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María Victorina López
Universidad de la República, Montevideo, Uruguay,
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Carlos Tálamo
Universidad Central de Venezuela, Caracas, Venezuela.
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María Montes de Oca
Universidad Central de Venezuela, Caracas, Venezuela.
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Gonzalo Valdivia
Pontificia Universidad Católica de Chile, Santiago, Chile.
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Ana Maria B Menezes
Universidade Federal de Pelotas, Pelotas, Brazil.
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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.

  • spirometry
  • quality control
  • calibration
  • pulmonary function tests
  • reliability

Footnotes

  • Correspondence: Rogelio Pérez-Padilla MD, Instituto Nacional de Enfermedades Respiratorias, Tlalpan 4502, Distrito Federal, Ciudad de México, México 14080. E-mail perezpad{at}servidor.unam.mx.
  • Copyright © 2006 by Daedalus Enterprises Inc.
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Respiratory Care: 51 (10)
Respiratory Care
Vol. 51, Issue 10
1 Oct 2006
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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, the Latin American COPD Prevalence Study (PLATINO) Team
Respiratory Care Oct 2006, 51 (10) 1167-1171;

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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, the Latin American COPD Prevalence Study (PLATINO) Team
Respiratory Care Oct 2006, 51 (10) 1167-1171;
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Keywords

  • spirometry
  • quality control
  • calibration
  • pulmonary function tests
  • reliability

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