Laboratory evaluation of the Acapella device: pressure characteristics under different conditions, and a software tool to optimize its practical use.
BACKGROUND: The Acapella is a respiratory rehabilitation device designed to aid sputum clearance. When the patient exhales through this device, continuous and oscillatory pressure levels are produced. The adequate practical use of the Acapella is critically dependent on the characteristics of the pr...
| Publicado en: | Respiratory Care Vol. 54; no. 11; pp. 1480 - 1488 |
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| Autores principales: | , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Mary Ann Liebert, Inc.
Nov2009
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105247399&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105247399 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00201324 4GG jtl: Respiratory Care issn: 00201324 maglogo: N pubinfo: dt: Nov2009 vid: 54 iid: 11 pid: 1365 pub: Mary Ann Liebert, Inc. place: New Rochelle, New York artinfo: ui: 105247399 105247399 2010483633 NLM19863832 105247399 ppf: 1480 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Laboratory evaluation of the Acapella device: pressure characteristics under different conditions, and a software tool to optimize its practical use. aug: au: Silva CEA Santos JG Jansen JM de Melo PL affil: Biomedical Instrumentation Laboratory, Institute of Biology and Faculty of Engineering, State University of Rio de Janeiro, Rio de Janeiro, Brazil sug: subj: Chest Physical Therapy Mucociliary Clearance Equipment and Supplies Rehabilitation, Pulmonary Equipment and Supplies Respiratory Therapy Equipment and Supplies Evaluation Sputum Airway Pressure Brazil Descriptive Statistics Equipment Design Evaluation Research Funding Source In Vitro Studies Mucociliary Clearance Product Evaluation Software Design ab: BACKGROUND: The Acapella is a respiratory rehabilitation device designed to aid sputum clearance. When the patient exhales through this device, continuous and oscillatory pressure levels are produced. The adequate practical use of the Acapella is critically dependent on the characteristics of the produced pressure, which include the production of a mean pressure c=:: 10 cm H20 and a matching of the oscillation frequency with the respiratory-system resonance frequency, and/or with the frequency of ciliary movement (approximately 13 Hz). The development of a dedicated software tool would contribute to optimize the clinical application of this device. Thus, the aim of this study was 2-fold: to characterize the mechanical behavior of the Acapella, and to develop a software tool to ease the practical use of this device. METHODS: An experimental setup was assembled in order to study mean pressure, oscillation frequency, and the oscillation amplitudes produced by 3 Acapella devices (model green) in the whole range of instrument adjustments and under air flow rates ranging from 200 mL/s to 800 mL/s. In order to increase flexibility, allowing the fast integration of further information obtained in future studies, the software was developed in a graphical environment. RESULTS: The device characterization showed an oscillation frequency varying from 8 Hz to 21 Hz, mean pressure ranging from 3 cm H20 to 23 cm H20, and oscillation amplitude from 4 cm H20 to 9 cm H20. These parameters increased with flow and instrument adjustment. A user-friendly software was developed, incorporating the current knowledge concerning secretion removal. After the introduction of the desired frequency and the patient air flow by the user, the software automatically calculates the necessary instrument adjustment, as well as mean pressure and oscillation amplitude. CONCLUSIONS: The Acapella device may produce clinically adequate values of mean pressure and oscillation frequency. However, it depends on its use at optimized conditions. The user-friendly software proposed in this study could help the user to achieve these conditions. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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