Validation of Respiratory Inductive Plethysmography in Patients with Pulmonary Disease

Tobin, Martin J.; Jenouri, Gilbert; Lind, Bonnie K.; Watson, Herman; Schneider, A; Sackner, Marvin A.

doi:10.1378/chest.83.4.615

Cited by 93 publications

(66 citation statements)

References 8 publications

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“…Instead, respiratory inductive plethysmography was used. Although this is the most widely accepted method for noninvasive respiratory measurements, there is as much as 10% deviation between plethysmography and spirometry in patients with lung disease, even when using the least-squares calibration technique [27]. Conversely, highly reliable methods to determine minute ventilation would involve the use of a mouthpiece or a face mask, possibly giving rise to discomfort, alterations in breathing pattern and an artefactual increase in ventilation [28].…”

Section: Study Limitationsmentioning

confidence: 99%

Slow breathing reduces sympathoexcitation in COPD

Raupach¹,

Bahr²,

Herrmann³

et al. 2008

European Respiratory Journal

147

136

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Neurohumoral activation has been shown to be present in hypoxic patients with chronic obstructive pulmonary disease (COPD). The aims of the present study were to investigate whether there is sympathetic activation in COPD patients in the absence of hypoxia and whether slow breathing has an impact on sympathoexcitation and baroreflex sensitivity.Efferent muscle sympathetic nerve activity, blood pressure, cardiac frequency and respiratory movements were continuously measured in 15 COPD patients and 15 healthy control subjects. Baroreflex sensitivity was analysed by autoregressive spectral analysis and the alpha-angle method.At baseline, sympathetic nerve activity was significantly elevated in COPD patients and baroreflex sensitivity was decreased (5.0¡0.6 versus 8.9¡0.8 ms?mmHg -1

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Section: Study Limitationsmentioning

confidence: 99%

Slow breathing reduces sympathoexcitation in COPD

Raupach¹,

Bahr²,

Herrmann³

et al. 2008

European Respiratory Journal

147

136

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“…14,15 Patients displaying asynchronous thoraco-abdominal movement have increased risk of ventilatory failure, necessitating mechanical ventilation and, consequently, poorer prognosis. 16,17 To our knowledge, studies on thoraco-abdominal movement during HFNC are limited.…”

Section: Introductionmentioning

confidence: 99%

Effect of High-Flow Nasal Cannula on Thoraco-Abdominal Synchrony in Adult Critically Ill Patients

et al. 2013

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BACKGROUND: High-flow nasal cannula (HFNC) creates positive oropharyngeal airway pressure and improves oxygenation. It remains unclear, however, whether HFNC improves thoracoabdominal synchrony in patients with mild to moderate respiratory failure. Using respiratory inductive plethysmography, we investigated the effects of HFNC on thoraco-abdominal synchrony. METHODS: We studied 40 adult subjects requiring oxygen therapy in the ICU. Low-flow oxygen (up to 8 L/min) was administered via oronasal mask for 30 min, followed by HFNC at 30 -50 L/min. Respiratory inductive plethysmography transducer bands were circumferentially placed: one around the rib cage, and one around the abdomen. We measured the movement of the rib-cage and abdomen, and used the sum signal to represent tidal volume (V T ) during mask breathing, and at 30 min during HFNC. We calculated the ratio of maximum compartmental amplitude (MCA) to V T , and the phase angle. We assessed arterial blood gas and vital signs at each period, and mouth status during HFNC. We used multiple regression analysis to identify factors associated with improvement in thoraco-abdominal synchrony. RESULTS: During HFNC, breathing frequency significantly decreased from 25 breaths/min (IQR 22-27 breaths/min) to 21 breaths/min (IQR 18 -24 breaths/min) (P < .001), and MCA/V T (P < .001) and phase angle (P ‫؍‬ .047) significantly improved. CONCLUSIONS: HFNC improved thoraco-abdominal synchrony in adult subjects with mild to moderate respiratory failure.

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“…We are uncertain, however, about the validity of RIP data for measuring these parameters. Although RIP is reported to be the 'gold standard' for non-invasive breathing pattern recordings, the validity studies have been based on timing and volume measures, not on compartment contributions (Chadha and Sackner, 1983;Tobin et al, 1983aTobin et al, , 1983b. In our experience the recommended placement for the lower RIP band (umbilicus level) may not capture the area of the abdomen most likely to move during respiration.…”

Section: Breathing Pattern Changesmentioning

confidence: 95%

Breathing pattern recordings using respiratory inductive plethysmography, before and after a physiotherapy breathing retraining program for asthma: A case report

BScPT

2017

Physiotherapy Theory and Practice

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Breathing retraining (BR) improves symptoms, psychological well-being and quality of life in adults with asthma; but there remains uncertainty as to mechanism of effect. One of the intuitively logical theories is that BR works through altering breathing pattern. There is currently no evidence, however, that BR does result in measurable changes in breathing pattern. In this case report we describe the effects of physiotherapy BR on a 57-year-old female with a 10-year history of asthma. Data were collected before and after a physiotherapy BR program comprising three sessions over 18 weeks: breathing pattern (respiratory inductive plethysmography (RIP); physiology (end tidal carbon dioxide (ETCO 2 ), heart rate, oxygen saturations, spirometric lung function); questionnaires (Asthma Control Questionnaire (ACQ), Hospital Anxiety and Depression Score, Nijmegen Questionnaire); and medication usage. After BR, the patient's symptoms improved. Her physiology was largely unchanged, although her FEV 1 increased by 0.12L, peak flow by 21L/min. The patient reported using less Salbutamol, yet her asthma control improved (ACQ down 1.5). Her Nijmegen score dropped from positive to negative for hyperventilation (from 39 to 7). Her anxiety-depression levels both reduced into 'normal' ranges. The patient's expiratory time increased, with longer respiratory cycles and slower respiratory rate. No changes were seen in relative contributions of ribcage and abdomen. Controlled trials are now needed to determine the generalizability of these findings. ARTICLE HISTORY

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Validation of Respiratory Inductive Plethysmography in Patients with Pulmonary Disease

Cited by 93 publications

References 8 publications

Slow breathing reduces sympathoexcitation in COPD

Slow breathing reduces sympathoexcitation in COPD

Effect of High-Flow Nasal Cannula on Thoraco-Abdominal Synchrony in Adult Critically Ill Patients

Breathing pattern recordings using respiratory inductive plethysmography, before and after a physiotherapy breathing retraining program for asthma: A case report

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