Design of an inductive plethysmograph for ventilation measurement

Cohen, K.P.; Panescu, Dorin; Booske, John H.; Webster, John G.; Tompkins, W.J.

doi:10.1088/0967-3334/15/2/009

Cited by 39 publications

(19 citation statements)

References 3 publications

(2 reference statements)

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“…Specifically, the selfinductance of the bands and thus the frequency output from connected oscillator-demodulator k changed monotonically with inspiration and expiration, as in a volume signal. 15,16 The signals were digitized for display and analysis. The voltage spans of the V rib or V abd were equalized by stretching these bands with 2 parallel rods, and the gain settings were unchanged throughout the study.…”

Section: Respiratory Inductance Plethysmographymentioning

confidence: 99%

Plethysmographic Comparison of Breathing Pattern in Heaves (Recurrent Airway Obstruction) Versus Experimental Bronchoconstriction or Hyperpnea in Horses

Hoffman¹,

Oura²,

Riedelberger³

et al. 2007

Veterinary Internal Medicne

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Background: Horses with recurrent airway obstruction (heaves) are described as exhibiting ''increased abdominal effort,'' but it is unknown whether this translates to an effective contribution to ventilation.Hypothesis: We hypothesized that heaves is characterized by asynchrony between rib cage and abdominal motions, and that the abdominal component is the major contributor to ventilation.Animals: The rib cage versus abdominal motion in naturally occurring heaves (n 5 15) was compared to controls at rest (n 5 7) and during hyperpnea because of lobeline treatment, and the effects of histamine-induced bronchoconstriction in controls (n 5 10).Methods: Flow patterns, phase angle (h) between the rib and abdominal compartments, abdominal (V abd ) contribution to tidal volume (V T ), and lung mechanics were measured.Results: Findings unique to the heaves group included the loss of biphasic expiratory flow, severely increased h with the abdomen consistently lagging behind the rib cage, and a reduced contribution of the abdomen to ventilation. A subgroup of heaves (n 5 5) with abdominal paradox showed a significant (P , .05) reduction in tidal volume, and increased respiratory rate. Bronchodilation reduced h in heaves (P 5 .06), but h remained significantly higher after bronchodilation than found in controls.Conclusions and Clinical Importance: We conclude that breathing pattern in horses with heaves is characterized by severe rib cage/abdominal asynchrony, with the rib cage motion in synchrony with flow, therefore dominating ventilation. In a subset of heaves, the abdominal compartment (diaphragm, abdominal muscles) was completely out of synchrony with flow (''abdominal paradox'') despite the clinical appearance of ''increased abdominal effort.''

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Section: Respiratory Inductance Plethysmographymentioning

confidence: 99%

Plethysmographic Comparison of Breathing Pattern in Heaves (Recurrent Airway Obstruction) Versus Experimental Bronchoconstriction or Hyperpnea in Horses

Hoffman¹,

Oura²,

Riedelberger³

et al. 2007

Veterinary Internal Medicne

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“…Cohen et al [16] evaluated an RIP in relation to an impedance plethysmograph and a spirometer. They demonstrated that tapping the RIP produced smaller artefacts than touching the impedance electrodes; though both these devices registered artefacts from arm movements, the spirometer was immune.…”

Section: Discussionmentioning

confidence: 99%

“…A design for an RIP has been given by Cohen et al [16]. The subject has to wear zig zag loops of wire (10 cm or so in depth, therefore quite restrictive) sewn onto an elasticized body band, available in infant, child, and adult sizes.…”

Section: Respiratory Inductance Plethysmography (Rip)mentioning

confidence: 99%

Comparative Review of Techniques for Recording Respiratory Events at Rest and during Deglutition

et al. 1997

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The coordination between swallowing and respiration is essential for safe feeding, and noninvasive feeding-respiratory instrumentation has been used in feeding and dysphagia assessment. Sometimes there are differences of interpretation of the data produced by the various respiratory monitoring techniques, some of which may be inappropriate for observing the rapid respiratory events associated with deglutition. Following a review of each of the main techniques employed for recording resting, pre-feeding, feeding, and post-feeding respiration on different subject groups (infants, children, and adults), a critical comparison of the methods is illustrated by simultaneous recordings from various respiratory transducers. As a result, a minimal combination of instruments is recommended which can provide the necessary respiratory information for routine feeding assessments in a clinical environment.

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“…Direct monitoring is preferred over the use of respiratory or apnea monitors, which may sense false flow impedance changes that are more indicative of abdominal manipulation during surgery (false diaphragmatic motions) than effective respiration. 103 Similarly, monitoring of respiration solely on the basis of rebreathing bag movement may result in an inaccurate assessment.…”

Section: Monitoringmentioning

confidence: 99%

The Association of Shelter Veterinarians’ 2016 Veterinary Medical Care Guidelines for Spay-Neuter Programs

Griffin¹,

Bushby²,

McCobb³

et al. 2016

javma

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As community efforts to reduce the overpopulation and euthanasia of unwanted and unowned cats and dogs have increased, many veterinarians have increasingly focused their clinical efforts on the provision of spay-neuter services. Because of the wide range of geographic and demographic needs, a wide variety of spay-neuter programs have been developed to increase delivery of services to targeted populations of animals, including stationary and mobile clinics, MASHstyle operations, shelter services, community cat programs, and services provided through private practitioners. In an effort to promote consistent, high-quality care across the broad range of these programs, the Association of Shelter Veterinarians convened a task force of veterinarians to develop veterinary medical care guidelines for spay-neuter programs. These guidelines consist of recommendations for general patient care and clinical procedures, preoperative care, anesthetic management, surgical procedures, postoperative care, and operations management. They were based on current principles of anesthesiology, critical care medicine, infection control, and surgical practice, as determined from published evidence and expert opinion. They represent acceptable practices that are attainable in spay-neuter programs regardless of location, facility, or type of program. The Association of Shelter Veterinarians envisions that these guidelines will be used by the profession to maintain consistent veterinary medical care in all settings where spay-neuter services are provided and to promote these services as a means of reducing sheltering and euthanasia of cats and dogs.

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Design of an inductive plethysmograph for ventilation measurement

Cited by 39 publications

References 3 publications

Plethysmographic Comparison of Breathing Pattern in Heaves (Recurrent Airway Obstruction) Versus Experimental Bronchoconstriction or Hyperpnea in Horses

Plethysmographic Comparison of Breathing Pattern in Heaves (Recurrent Airway Obstruction) Versus Experimental Bronchoconstriction or Hyperpnea in Horses

Comparative Review of Techniques for Recording Respiratory Events at Rest and during Deglutition

The Association of Shelter Veterinarians’ 2016 Veterinary Medical Care Guidelines for Spay-Neuter Programs

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