Impulse oscillometry in patients with pulmonary arterial hypertension: an exploratory study.

Helena Jannuzzi Villas Bôas, Ilma Aparecida Paschoal, Mônica Corso Pereira

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Article in Clinics (Sao Paulo, Brazil), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Helena Jannuzzi Villas BôasDepartamento de Medicina Interna, Universidade de Campinas (UNICAMP), Campinas, SP, Brazil.

Ilma Aparecida PaschoalDepartamento de Medicina Interna, Universidade de Campinas (UNICAMP), Campinas, SP, Brazil.

Mônica Corso PereiraDepartamento de Medicina Interna, Universidade de Campinas (UNICAMP), Campinas, SP, Brazil. Electronic address: moncorso@unicamp.br.

Universidade Estadual de Campinas (UNICAMP) · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionStudies suggest peripheral airway abnormalities in Pulmonary Arterial Hypertension (PAH). Impulse Oscillometry (IOS) is a noninvasive and sensitive technique for assessing the small airways. It evaluates the impedance of the respiratory system ‒ Resistance (R) and reactance (X) ‒ to a pulse of sound waves sent to the lungs, in a range of frequencies (5‒20 Hz).

methodResistance variables: R5, R20, R5-R20 and reactance variables: AX (reactance area) and Fres (resonance frequency). The aim is to evaluate R and X in patients with idiopathic PAH (IPAH) and to investigate whether there is a correlation between IOS and spirometry.

resultsThirteen IPAH patients and 11 healthy subjects matched for sex and age underwent IOS and spirometry. IPAH patients had lower FVC and FEV DISCUSSION: Patients showed changes suggestive of increased resistance and reactance in the IOS compared to healthy individuals, and the IOS findings showed a good correlation with spirometry variables.

Indexed as

Pulmonary Arterial HypertensionForced Expiratory VolumeHumansLungOscillometryRespiratory Function TestsSpirometryImpulse oscillometryLung functionPulmonary arterial hypertensionPulmonary hypertensionSpirometry

Identifiers

PMID38490138

DOI10.1016/j.clinsp.2023.100313

PMCPMC10951447

OpenAlexW4392826989

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