Measurement of respiratory function by impulse oscillometry in horses

Erck, Emmanuelle Van; Votion, Dominique; Art, Tatiana; Lekeux, Pierre

doi:10.2746/0425164044864714

Cited by 33 publications

(21 citation statements)

References 35 publications

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“…Pulmonary function was evaluated at rest before the treadmill test by impulse oscillometry in each horse without sedation (van Erck and others 2004). Total respiratory resistance (Rrs) and reactance (Xrs) at 5 and 10 Hz were calculated.…”

Section: Methodsmentioning

confidence: 99%

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

et al. 2011

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Thirty-eight endurance horses underwent clinical and ancillary examinations, including haematological and biochemical evaluation, standardised exercise tests both on a treadmill and in the field, Doppler echocardiography, impulse oscillometry, video endoscopy and collection of respiratory fluids. All of the examined poorly performing horses were affected by subclinical diseases, and most of them had multiple concomitant disorders. On the contrary, the well-performing horses were free of any subclinical disease. The most frequently diagnosed diseases were respiratory disorders, followed by musculoskeletal and cardiac problems. Poor performers exhibited lower speeds at blood lactate concentration of 4 mmol/l (VLA4) and at heart rates of 160 (V160) and 200 bpm (V200) on the treadmill and in the field, as well as slower recovery of heart rate.

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Section: Methodsmentioning

confidence: 99%

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

et al. 2011

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“…However, despite providing an objective measure of airway mechanics, these traditional methods have the disadvantages of being relatively expensive and invasive, necessitating the measurement of either intraoesophageal or intrapleural pressures. Furthermore, the sensitivity of these methods is relatively poor as changes consistent with the presence of airway obstruction are generally evident only when relatively severe and often clinically apparent . Consequently, alternative more sensitive methods have been evaluated in recent years.…”

Section: Ancillary Diagnostic Testsmentioning

confidence: 99%

“…Consequently, alternative more sensitive methods have been evaluated in recent years. These include impulse oscillometry, which measures respiratory resistance and reactance at various frequencies , tidal breathing flow‐volume loops , volumetric capnography and forced expiratory flow‐volume curve analysis , with the most discriminatory and commonly employed method at present being impulse oscillometry.…”

Section: Ancillary Diagnostic Testsmentioning

confidence: 99%

Recurrent airway obstruction: A review

Pirie

2014

Equine Veterinary Journal

106

115

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Recurrent airway obstruction is a widely recognised airway disorder, characterised by hypersensitivity-mediated neutrophilic airway inflammation and lower airway obstruction in a subpopulation of horses when exposed to suboptimal environments high in airborne organic dust. Over the past decade, numerous studies have further advanced our understanding of different aspects of the disease. These include clarification of the important inhaled airborne agents responsible for disease induction, improving our understanding of the underlying genetic basis of disease susceptibility and unveiling the fundamental immunological mechanisms leading to establishment of the classic disease phenotype. This review, as well as giving a clinical overview of recurrent airway obstruction, summarises much of the work in these areas that have culminated in a more thorough understanding of this debilitating disease.

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“…For the same reason, and as suggested previously [ 17 ], only impedance data showing high values of coherence (>0.85 at 3 Hz and >0.9 at 5 and 7 Hz) were included, in order to optimize the quality of data. Other studies on IOS values in horses with asthma did not report the coherence values [ 13 , 14 , 15 , 16 , 18 ], and therefore the comparison with our data is not possible.…”

Section: Discussionmentioning

confidence: 60%

“…The Impulse Oscillation System (IOS) is a method based on a repetition of impulses generated from a loudspeaker and applied to the respiratory system that allows the determination of R and X across multiple frequencies [ 12 ]. Van Erck et al [ 13 , 14 , 15 , 16 ] first reported on the use of IOS in horses with severe asthma, in which they evaluated the frequencies from 5 to 20 Hz. They reported that the results of IOS and conventional lung mechanics were well correlated.…”

Section: Introductionmentioning

confidence: 99%

Within-Breath Oscillatory Mechanics in Horses Affected by Severe Equine Asthma in Exacerbation and in Remission of the Disease

Stucchi

Ferrucci

Bullone

et al. 2021

Animals

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Oscillometry is a technique that measures the resistance (R) and the reactance (X) of the respiratory system. In humans, analysis of inspiratory and expiratory R and X allows to identify the presence of tidal expiratory flow limitation (EFLt). The aim of this study was to describe inspiratory and expiratory R and X measured by impulse oscillometry system (IOS) in horses with severe asthma (SEA) when in clinical remission (n = 7) or in exacerbation (n = 7) of the condition. Seven healthy, age-matched control horses were also studied. Data at 3, 5, and 7 Hz with coherence > 0.85 at 3 Hz and >0.9 at 5 and 7 Hz were considered. The mean, inspiratory and expiratory R and X and the difference between inspiratory and expiratory X (ΔX) were calculated at each frequency. The data from the three groups were statistically compared. Results indicated that in horses during exacerbation of severe asthma, X during expiratory phase is more negative than during inspiration, such as in humans in presence of EFLt. The evaluation of X during inspiration is promising in discriminating between horses with SEA in remission and control horses.

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Measurement of respiratory function by impulse oscillometry in horses

Cited by 33 publications

References 35 publications

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

Subclinical diseases underlying poor performance in endurance horses: diagnostic methods and predictive tests

Recurrent airway obstruction: A review

Within-Breath Oscillatory Mechanics in Horses Affected by Severe Equine Asthma in Exacerbation and in Remission of the Disease

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