Multiparametric analysis of sniff nasal inspiratory pressure test in middle stage amyotrophic lateral sclerosis

dc.contributor.authorDourado Junior, Mário Emílio Teixeira
dc.contributor.authorSarmento, Antonio
dc.contributor.authorAliverti, Andrea
dc.contributor.authorMarques, Layana
dc.contributor.authorPennati, Francesca
dc.contributor.authorFregonezi, Guilherme
dc.contributor.authorFregonezi, Vanessa Regiane Resqueti
dc.contributor.authorIDhttps://orcid.org/0000-0002-9462-2294pt_BR
dc.date.accessioned2023-07-27T20:03:11Z
dc.date.available2023-07-27T20:03:11Z
dc.date.issued2018-05-02
dc.description.resumoThe relaxation rates and contractile properties of inspiratory muscles are altered with inspiratory muscle weakness and fatigue. This fact plays an important role in neuromuscular disorders patients and had never been extensively studied in amyotrophic lateral sclerosis (ALS). In this cross-sectional study, these parameters were investigated non-invasively through nasal inspiratory sniff pressure test (SNIP) in 39 middle stage spinal onset ALS subjects and compared with 39 healthy controls. ALS patients were also divided into three subgroups according to a decline in their percentage of predicted forced vital capacity (FVC%pred) as well as a decline in the ALS functional rating scale score and its respiratory subscore (R-subscore) in order to determine the best parameter linked to early respiratory muscle weakness. When compared with healthy subjects, middle stage ALS subjects exhibited a significantly lower (p < 0.0001) maximum relaxation rate and maximum rate of pressure development (MRPD), as well as a significantly higher (p < 0.0001) tau (τ), contraction time, and half-relaxation time. The results from receiver operating characteristic curves showed that MRPD (AUC 0.735, p < 0.001) and FVC%pred (AUC 0.749, p = 0.009) were the best discriminator parameters between ALS patients with ≤30 and >30 points in the ALS functional rating scale. In addition, 1/2RT (AUC 0.720, p = 0.01), FVC%pred (AUC 0.700, p = 0.03), τ (AUC 0.824, p < 0.0001), and MRPD (AUC 0.721, p = 0.01) were the parameters more sensitive in detecting a fall of three points in the R-subscore. On the other hand, MRPD (AUC 0.781, p < 0.001), τ (AUC 0.794, p = 0.0001), and percentage of predicted of SNIP (AUC 0.769, p = 0.002) were the parameters able to detect a fall in 30% of the FVC%pred in middle stage ALS patients. The contractile properties and relaxation rates of the diaphragm are altered in middle stage spinal onset ALS when compared with healthy subjects. These parameters are able to discriminate between those middle stage ALS subjects with early decline in inspiratory muscle function and those who not.pt_BR
dc.identifier.citationDOURADO JÚNIOR, Mário Emílio Teixeira, et al. Multiparametric analysis of sniff nasal inspiratory pressure test in middle stage amyotrophic lateral sclerosis. Frontiers in Neurology, v. 9, p. 10.3389. DOI: 10.3389/fneur.2018.00306 Disponível em: https://www.frontiersin.org/articles/10.3389/fneur.2018.00306/full Acesso em: 19 jul. 2023.pt_BR
dc.identifier.doihttps://doi.org/10.3389/fneur.2018.00306
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/54239
dc.languageenpt_BR
dc.publisherFrontiers in Neurologypt_BR
dc.rightsAttribution 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/br/*
dc.subjectamyotrophic lateral sclerosispt_BR
dc.subjectforced vital capacitypt_BR
dc.subjectinspiratory muscle weaknesspt_BR
dc.subjectrelaxation ratespt_BR
dc.subjectrespiratory subscorept_BR
dc.subjectsniff nasal inspiratory pressurept_BR
dc.titleMultiparametric analysis of sniff nasal inspiratory pressure test in middle stage amyotrophic lateral sclerosispt_BR
dc.typearticlept_BR

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