uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Evaluation of Pressure Generated by Resistors From Different Positive Expiratory Pressure Devices
Gothenburg Univ, Dept Gastrosurg Res & Educ, Sahlgrenska Acad, Gothenburg, Sweden.;Gothenburg Univ, Dept Phys Therapy, Sahlgrenska Univ Hosp, Gothenburg, Sweden.;Gothenburg Univ, Sahlgrenska Acad, Gothenburg, Sweden..
Gothenburg Univ, Dept Phys Therapy, Sahlgrenska Univ Hosp, Gothenburg, Sweden.;Gothenburg Univ, Sahlgrenska Acad, Gothenburg, Sweden..
Chalmers, S-41296 Gothenburg, Sweden..
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Physiology.
2015 (English)In: Respiratory care, ISSN 0020-1324, E-ISSN 1943-3654, Vol. 60, no 10, 1418-1423 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Breathing exercises with positive expiratory pressure (PEP) are used to improve pulmonary function and airway clearance. Different PEP devices are available, but there have been no studies that describe the pressure generated by different resistors. The purpose of this study was to compare pressures generated from the proprietary resistor components of 4 commercial flow-dependent PEP valves with all other parameters kept constant. METHODS: Resistors from 4 flow-regulated PEP devices (Pep/Rmt system, Wellspect HealthCare; Pipe P breathing exerciser, Koo Medical Equipment; Mini-PEP, Philips Respironics [including resistors by Rusch]; and 15-mm endo-adapter, VBM Medizintechnik) were tested randomly by a blinded tester at constant flows of 10 and 18 L/min from an external gas system. All resistors were tested 3 times. RESULTS: Resistors with a similar diameter produced statistically significant different pressures at the same flow. The differences were smaller when the flow was 10 L/min compared with 18 L/min. The differences were also smaller when the diameter of the resistor was increased. The pressures produced by the 4 resistors of the same size were all significantly different when measuring 1.5- and 2.0-mm resistors at a flow of 10 L/min and 2.0-mm resistors at a flow of 18 L/min (P < .001). There were no significant differences between any of the resistors when testing sizes of 4.5 and 5.0 mm at either flow. The Mini-PEP and adapter resistors gave the highest pressures. CONCLUSIONS: Pressures generated by the different proprietary resistor components of 4 commercial PEP devices were not comparable, even though the diameter of the resistors is reported to be the same. The pressures generated were significantly different, particularly when using small-diameter resistors at a high flow. Therefore, the resistors may not be interchangeable. This is important information for clinicians, particularly when considering PEP for patients who do not tolerate higher pressures.

Place, publisher, year, edition, pages
2015. Vol. 60, no 10, 1418-1423 p.
Keyword [en]
positive expiratory pressure, breathing exercises, resistance breathing
National Category
Respiratory Medicine and Allergy
Identifiers
URN: urn:nbn:se:uu:diva-265696DOI: 10.4187/respcare.03587ISI: 000362268600011OAI: oai:DiVA.org:uu-265696DiVA: diva2:866710
Available from: 2015-11-03 Created: 2015-11-02 Last updated: 2017-12-01Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Westerdahl, Elisabeth

Search in DiVA

By author/editor
Westerdahl, Elisabeth
By organisation
Clinical Physiology
In the same journal
Respiratory care
Respiratory Medicine and Allergy

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 305 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf