Forced Oscillation Technique

Navajas, Daniel; Dellacà, Raffaele L.; Farré, Ramón

doi:10.1007/978-88-470-5647-3_10

Cited by 3 publications

(2 citation statements)

References 87 publications

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“…Respiratory oscillometry, also known as the forced oscillation technique, was described in 1954 by Dubois and collaborators as a non-invasive method for lung evaluation, and has been improved ever since (5)(6)(7). Currently, this technique has shown greater relevance in pulmonary function laboratories, as it provides new information on pulmonary mechanics, allowing a better understanding of the pathophysiology (5)(6)(7).…”

Section: Introductionmentioning

confidence: 99%

Respiratory oscillometry and functional analyses in patients with idiopathic scoliosis

Sousa,

Pessoa,

Carelli

et al. 2023

Braz J Med Biol Res

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Scoliosis is a condition that affects the spine and causes chest rotation and trunk distortion. Individuals with severe deformities may experience dyspnea on exertion and develop respiratory failure. Respiratory oscillometry is a simple and non-invasive method that provides detailed information on lung mechanics. This work aims to investigate the potential of oscillometry in the evaluation of respiratory mechanics in patients with scoliosis and its association with physical performance. We analyzed 32 volunteers in the control group and 32 in the scoliosis group. The volunteers underwent traditional pulmonary function tests, oscillometry, and the 6-minute walk test (6MWT). Oscillometric analysis showed increased values of resistance at 4 Hz (R4, Po0.01), 12 Hz (R12, Po0.0001), and 20 Hz (R20, Po0.01). Similar analysis showed reductions in dynamic compliance (Cdyn, Po0.001) and ventilation homogeneity, as evaluated by resonance frequency (fr, Po0.001) and reactance area (Ax, Po0.001). Respiratory work, described by the impedance modulus, also showed increased values (Z4, Po0.01). Functional capacity was reduced in the group with scoliosis (Po0.001). A significant direct correlation was found between Cobb angle and R12, AX, and Z4 (P=0.0237, P=0.0338, and P=0.0147, respectively), and an inverse correlation was found between Cdyn and Cobb angle (P=0.0190). These results provided new information on respiratory mechanics in scoliosis and are consistent with the involved pathophysiology, suggesting that oscillometry may improve lung function tests for patients with scoliosis.

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Section: Introductionmentioning

confidence: 99%

Respiratory oscillometry and functional analyses in patients with idiopathic scoliosis

Sousa,

Pessoa,

Carelli

et al. 2023

Braz J Med Biol Res

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“…FOT is based on applying small amplitude, high‐frequency pressure oscillation at the mouthpiece while the patient is spontaneously breathing, thus not requiring patient collaboration other than breathing through a mouthpiece with nasal clips . The oscillation is scarcely perceived by the patient because its amplitude (~1 cmH 2 O) is very low and its frequency (>5 Hz) is high enough to not interfere with contraction of the inspiratory muscles.…”

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confidence: 99%

Forced oscillation: A poorly exploited tool for simply assessing respiratory function in children

Farré

Navajas

2016

Respirology

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Cambios en la mecánica ventilatoria debidos a variaciones de la PEEP y la presión soporte: estudio en sujetos sanos bajo ventilación mecánica no invasiva

Muñoz¹

2017

Rev. Fac. Med.

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Introducción. Por lo general, la mecánica ventilatoria se ha estimado en modo controlado con el uso de aproximaciones no adecuadas para ventilación espontánea.Objetivo. Medir los cambios de la mecánica ventilatoria ante variaciones de la presión positiva al final de la expiración (PEEP, por su sigla en inglés) y la presión soporte (PS) en ventilación mecánica no invasiva.Materiales y métodos. A través de una estrategia no invasiva, se estimó la mecánica ventilatoria bajo diferentes niveles de PEEP y PS. Para tal fin, se utilizó un simulador mecánico y se registró una base de datos de 14 sujetos sanos conectados de manera no invasiva a un ventilador mecánico.Resultados. Se obtuvieron valores medianos de resistencia y compliancia de 91.2[77.8-135.9]mL/cmH2O y 8.3[6.1-10.4]cmH2O/L/s para los 14 sujetos sanos con PEEP y PS de 0 cmH2O, respectivamente. En los incrementos de PEEP, los sujetos presentaron aumento estadísticamente significativo en la compliancia. Por el contrario, en el incremento de presión soporte, no se observaron cambios de ningún parámetro.Conclusiones. Se encontraron valores de compliancia y resistencia, acordes con los configurados en el simulador mecánico y coherentes con los reportados en la literatura en el caso de sujetos sanos. Esto resulta de gran utilidad al tomar decisiones en unidades de cuidados intensivos.

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Forced Oscillation Technique

Cited by 3 publications

References 87 publications

Respiratory oscillometry and functional analyses in patients with idiopathic scoliosis

Respiratory oscillometry and functional analyses in patients with idiopathic scoliosis

Forced oscillation: A poorly exploited tool for simply assessing respiratory function in children

Cambios en la mecánica ventilatoria debidos a variaciones de la PEEP y la presión soporte: estudio en sujetos sanos bajo ventilación mecánica no invasiva

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