Spirometry in healthy subjects: do technical details of the test procedure affect the results?

<h4>Introduction</h4>Spirometry should follow strict quality criteria. The American Thoracic Society (ATS) recommends the use of a noseclip; however there are controversies about its need. ATS also indicates that tests should be done in the sitting position, but there are no recommendati...

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Autores principales:	Luciana Sipoli, Larissa Martinez, Leila Donária, Vanessa Suziane Probst, Graciane Laender Moreira, Fabio Pitta
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/701710981f0a423784e7f3e06b6c8474
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spelling	oai:doaj.org-article:701710981f0a423784e7f3e06b6c84742021-11-25T05:59:49ZSpirometry in healthy subjects: do technical details of the test procedure affect the results?1932-620310.1371/journal.pone.0107782https://doaj.org/article/701710981f0a423784e7f3e06b6c84742014-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0107782https://doaj.org/toc/1932-6203<h4>Introduction</h4>Spirometry should follow strict quality criteria. The American Thoracic Society (ATS) recommends the use of a noseclip; however there are controversies about its need. ATS also indicates that tests should be done in the sitting position, but there are no recommendations neither about position of the upper limbs and lower limbs nor about who should hold the mouthpiece while performing the maneuvers: evaluated subject or evaluator.<h4>Objectives</h4>To compare noseclip use or not, different upper and lower limbs positions and who holds the mouthpiece, verifying if these technical details affect spirometric results in healthy adults.<h4>Methods</h4>One hundred and three healthy individuals (41 men; age: 47 [33-58] years; normal lung function: FEV₁/FVC = 83±5, FEV₁ = 94 [88-104]%predicted, FVC = 92 [84-102]%predicted) underwent a protocol consisting of four spirometric comparative analysis in the sitting position: 1) maximum voluntary ventilation (MVV) with vs without noseclip; 2) FVC performed with vs without upper limbs support; 3) FVC performed with lower limbs crossed vs lower limbs in neutral position; 4) FVC, slow vital capacity and MVV comparing the evaluated subject holding the mouthpiece vs evaluator holding it.<h4>Results</h4>Different spirometric variables presented statistically significant difference (p<0.05) when analysing the four comparisons; however, none of them showed any variation larger than those considered as acceptable according to the ATS reproducibility criteria.<h4>Conclusions</h4>There was no relevant variation in spirometric results when analyzing technical details such as noseclip use during MVV, upper and lower limb positions and who holds the mouthpiece when performing the tests in healthy adults.Luciana SipoliLarissa MartinezLeila DonáriaVanessa Suziane ProbstGraciane Laender MoreiraFabio PittaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 9, p e107782 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Luciana Sipoli Larissa Martinez Leila Donária Vanessa Suziane Probst Graciane Laender Moreira Fabio Pitta Spirometry in healthy subjects: do technical details of the test procedure affect the results?
description	<h4>Introduction</h4>Spirometry should follow strict quality criteria. The American Thoracic Society (ATS) recommends the use of a noseclip; however there are controversies about its need. ATS also indicates that tests should be done in the sitting position, but there are no recommendations neither about position of the upper limbs and lower limbs nor about who should hold the mouthpiece while performing the maneuvers: evaluated subject or evaluator.<h4>Objectives</h4>To compare noseclip use or not, different upper and lower limbs positions and who holds the mouthpiece, verifying if these technical details affect spirometric results in healthy adults.<h4>Methods</h4>One hundred and three healthy individuals (41 men; age: 47 [33-58] years; normal lung function: FEV₁/FVC = 83±5, FEV₁ = 94 [88-104]%predicted, FVC = 92 [84-102]%predicted) underwent a protocol consisting of four spirometric comparative analysis in the sitting position: 1) maximum voluntary ventilation (MVV) with vs without noseclip; 2) FVC performed with vs without upper limbs support; 3) FVC performed with lower limbs crossed vs lower limbs in neutral position; 4) FVC, slow vital capacity and MVV comparing the evaluated subject holding the mouthpiece vs evaluator holding it.<h4>Results</h4>Different spirometric variables presented statistically significant difference (p<0.05) when analysing the four comparisons; however, none of them showed any variation larger than those considered as acceptable according to the ATS reproducibility criteria.<h4>Conclusions</h4>There was no relevant variation in spirometric results when analyzing technical details such as noseclip use during MVV, upper and lower limb positions and who holds the mouthpiece when performing the tests in healthy adults.
format	article
author	Luciana Sipoli Larissa Martinez Leila Donária Vanessa Suziane Probst Graciane Laender Moreira Fabio Pitta
author_facet	Luciana Sipoli Larissa Martinez Leila Donária Vanessa Suziane Probst Graciane Laender Moreira Fabio Pitta
author_sort	Luciana Sipoli
title	Spirometry in healthy subjects: do technical details of the test procedure affect the results?
title_short	Spirometry in healthy subjects: do technical details of the test procedure affect the results?
title_full	Spirometry in healthy subjects: do technical details of the test procedure affect the results?
title_fullStr	Spirometry in healthy subjects: do technical details of the test procedure affect the results?
title_full_unstemmed	Spirometry in healthy subjects: do technical details of the test procedure affect the results?
title_sort	spirometry in healthy subjects: do technical details of the test procedure affect the results?
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/701710981f0a423784e7f3e06b6c8474
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Spirometry in healthy subjects: do technical details of the test procedure affect the results?

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