Single-position calibration of the respiratory inductance plethysmograph

Loveridge, B; West, Peter; Anthonisen, N. R.; Kryger, Meir H.

doi:10.1152/jappl.1983.55.3.1031

Cited by 52 publications

(38 citation statements)

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“…Respiratory signals (tidal volume, rib cage and abdominal signals) were sampled at a rate of 20 signals·s -1 . The coefficients of rib cage and abdominal signals over a period of 5 min were derived from multiple linear regression (MLR) [22]. The accuracy of this method for estimation of tidal volume (VT) was checked by comparison with the mean VT value obtained simultaneously from the pneumotachograph.…”

Section: Methodsmentioning

confidence: 99%

Unsteadiness of breathing in patients with hyperventilation syndrome and anxiety disorders

Han

Stegen²,

Simkens³

et al. 1997

Eur Respir J

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Simply breathing via a mouthpiece and pneumotachograph made end-tidal CO 2 fractional concentration (FET,CO 2 ) decrease progressively both in hyperventilators and in patients with anxiety disorders, but not in normals. At the start of the measurement the FET,CO 2 was not different between patients and healthy subjects. In patients ≤28 yrs, the decrease of FET,CO 2 resulted from a higher tidal volume, and in patients ≥29 years from an increase in frequency. After voluntary hyperventilation, the recovery of FET,CO 2 was delayed in patients, due to a slower normalization of respiratory frequency in females and in older males, and of tidal volume in younger males, and also due to less frequent end-expiratory pauses. When breathing was recorded first by means of inductive plethysmography (Respitrace), the progressive decline of FET,CO 2 seen in patients was not observed: from the onset of the recording, FET,CO 2 was reduced in patients. It did not change further when, immediately afterwards, the subject switched to mouthpiece breathing.The finding that breathing through a mouthpiece induces hyperventilation in patients and that recovery of FET,CO 2 is delayed after voluntary hyperventilation, suggests that the respiratory control system is less resistant to challenges (mouthpiece or voluntary hyperventilation) in those patients. On the other hand, the lower values of FET,CO 2 measured during recording by means of a Respitrace probably result from a challenge, prior to the recordings, induced by the fitting of the measuring device to the patient. This unsteadiness of breathing characterizes patients with hyperventilation syndrome and those with anxiety disorders, but is not sufficiently sensitive to be used for individual diagnosis.

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Section: Methodsmentioning

confidence: 99%

Unsteadiness of breathing in patients with hyperventilation syndrome and anxiety disorders

Han

Stegen²,

Simkens³

et al. 1997

Eur Respir J

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“…of the Respitrace. The regression coefficients of the latter outputs can then be used to reconstruct the volume signal~Loveridge, West, Anthonisen, & Kryger, 1983!. The calibration should be repeated every time body posture is even slightly changed.…”

Section: Inductive Plethysmography (Respitrace)mentioning

confidence: 99%

Guidelines for mechanical lung function measurements in psychophysiology

Ritz¹,

Dahme²,

DuBois³

et al. 2002

Psychophysiol.

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Studies in psychophysiology and behavioral medicine have uncovered associations among psychological processes, behavior, and lung function. However, methodological issues specific to the measurement of mechanical lung function have rarely been discussed. This report presents an overview of the physiology, techniques, and experimental methods of mechanical lung function measurements relevant to this research context. Techniques to measure lung volumes, airflow, airway resistance, respiratory resistance, and airflow perception are introduced and discussed. Confounding factors such as ventilation, medication, environmental factors, physical activity, and instructional and experimenter effects are outlined, and issues specific to children and clinical groups are discussed. Recommendations are presented to increase the degree of standardization in the research application and publication of mechanical lung function measurements in psychophysiology.Descriptors: Mechanical lung function, Airway resistance, Respiratory resistance, Spirometry, Pneumotachography, Body plethysmography, Forced oscillation technique, Interrupter technique, Respiratory perception Despite long-standing interest in respiration by psychophysiologists, it is surprising that little attention has been directed to methodological issues of specific measurement techniques in this area. Although occasional textbook chapters have been devoted to respiration measurements, a more in-depth discussion of techniques dealing with the assessment of mechanical lung function is still missing. Mechanical lung function relates to lung volumes and airflow through the respiratory system as well as the pressurevolume and pressure-flow characteristics as indicators of elastic and resistive properties of the airways, lungs, and chest wall. In clinical practice, mechanical lung function measures are widely used for the diagnosis and management of various pulmonary diseases, most importantly bronchial asthma and chronic obstructive pulmonary disease~COPD!. In psychophysiology and behavioral medicine, potential associations between psychological or behavioral processes and mechanical lung function offer an exciting perspective both for basic research and clinical application. Due to the particular importance of the vagal system in governing airway function, the airways offer a unique window into the autonomic nervous system regulation of behavior, emotion, and cogThomas Ritz acted as coordinator and contributor to this report. The authorship of the other contributors was determined by alphabetical order. Different sections were drafted by individual contributors, submitted to internal peer review, and revised until consensus was achieved. We are indebted to

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“…It was subsequently confirmed that a linear combination of RIP ribcage and abdomen signals was indeed proportional to V T [5,6].…”

Section: Introductionmentioning

confidence: 77%

Scope of linear estimators of tidal and occluded volumes using thoracoabdominal indications of breathing movement coordination

Millard

Black

2004

Medical Engineering & Physics

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Single-position calibration of the respiratory inductance plethysmograph

Cited by 52 publications

References 0 publications

Unsteadiness of breathing in patients with hyperventilation syndrome and anxiety disorders

Unsteadiness of breathing in patients with hyperventilation syndrome and anxiety disorders

Guidelines for mechanical lung function measurements in psychophysiology

Scope of linear estimators of tidal and occluded volumes using thoracoabdominal indications of breathing movement coordination

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