The Accuracy of a Handheld Portable Spirometer

Rebuck, David A.; Hanania, Nicola A.; D’Urzo, Anthony

doi:10.1378/chest.109.1.152

Cited by 48 publications

(41 citation statements)

References 10 publications

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“…19,20,22,23 This deviation seems to increase with higher values of the respective parameters ('non-linearity'). 19,20,23 Short-term reproducibility of electronic spirometers appears to be quite acceptable for both FEV 1 and FVC, 19,22,23 and there is some evidence that electronic spirometers keep producing valid measurements in the long term. 22,23 Quality control of spirometry needs to be checked regularly.…”

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 98%

“…17 Since the performance of different types of spirometers varies considerably, no general statements on these characteristics can be made, 18 but they have have been evaluated for several spirometers. [19][20][21][22][23] Correlations between parameters as measured by electronic spirometer and a gold-standard are generally high. 19,20,23 Nonetheless, it has been shown that FEV 1 and FVC values measured with rotary vane spirometers or pneumotachographs may be systematically lower than gold-standard values.…”

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 99%

“…[19][20][21][22][23] Correlations between parameters as measured by electronic spirometer and a gold-standard are generally high. 19,20,23 Nonetheless, it has been shown that FEV 1 and FVC values measured with rotary vane spirometers or pneumotachographs may be systematically lower than gold-standard values. 19,20,22,23 This deviation seems to increase with higher values of the respective parameters ('non-linearity').…”

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 99%

“…19,20,23 Nonetheless, it has been shown that FEV 1 and FVC values measured with rotary vane spirometers or pneumotachographs may be systematically lower than gold-standard values. 19,20,22,23 This deviation seems to increase with higher values of the respective parameters ('non-linearity'). 19,20,23 Short-term reproducibility of electronic spirometers appears to be quite acceptable for both FEV 1 and FVC, 19,22,23 and there is some evidence that electronic spirometers keep producing valid measurements in the long term.…”

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 99%

See 3 more Smart Citations

The value of spirometry for primary care: Asthma and COPD

et al. 2000

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Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 98%

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 99%

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 99%

Section: Accuracy Linearity and Reproducibility Of Electronic Spirommentioning

confidence: 99%

See 2 more Smart Citations

The value of spirometry for primary care: Asthma and COPD

et al. 2000

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“…The measurements made by different types of spirometers cannot be used interchangeably. 45 An advantage of our study was that the same portable spirometer was used with all participants.…”

Section: Limitationsmentioning

confidence: 99%

Population-Based Study on the Prevalence of Spirometric Obstructive Pattern in Porto, Portugal

et al. 2011

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BACKGROUND: The diagnosis of obstructive lung disease (OLD) based on clinical grounds is challenging. There have been no population-based COPD studies that collected pulmonary function data in Portugal, a country in transition between phases 2 and 3 of the smoking epidemic. OB-JECTIVE: To estimate the prevalence of obstructive pattern on spirometry in a representative sample of adults from Porto, Portugal. METHODS: We conducted a health survey between 2001 and 2003, and 758 participants > 40 years old had reliable spirometry. We used a structured questionnaire to collect demographic, clinical, social, and behavioral data. Obstructive pattern was defined as FEV 1 /FVC < 70%. Logistic regression was performed to quantify the association between socio-demographic and clinical factors and outcome. RESULTS: The participants' mean ؎ SD age was 58.5 ؎ 11.5 years, and 62% were women. The prevalence of spirometric obstructive pattern was 10.7%, 95% CI 8.6 -13.1%; 13.4% in men, and 9.1% in women (P ‫؍‬ .08). The age-adjusted odds ratios for cumulative smoking exposure of less than and more than 20 pack years, in comparison with never smokers, were 3.49 (95% CI 1.02-11.92) and 3.91 (95% CI 1.29 -11.89) among men, and 1.47 (95% CI 0.53-4.08) and 2.68 (95% CI 1.07-6.68) among women, respectively. Previously diagnosed OLD was reported by 30.9% (95% CI 21.1-42.1%) of the participants with spirometric obstructive pattern. Spirometry confirmed the OLD diagnosis in 20.5% (95% CI 13.7-28.7%) of subjects who self-reported OLD (kappa ‫؍‬ 0.14, 95% CI 0.07-0.20). CONCLUSIONS: The prevalence of spirometric obstructive pattern was high. Considering Portugal's position in the smoking epidemic, together with the aging of the population, we can expect an increase in the prevalence of OLD in older people and in women. Our results confirm the limited validity of self-reported OLD in epidemiological studies.

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