| Intrinsic positive end-expiratory pressure at various frequencies of supraglottic jet ventilation in a model of dynamic upper airway obstruction. | |
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MedLine Citation:
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PMID: 20601451 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Supraglottic jet ventilation (JV(S)) with injectors above airway stenoses may result in inadvertent high lung pressures. We designed this study to investigate intrinsic positive end-expiratory pressure (PEEP(i)) during jet ventilation via a distant injector in a model of dynamic upper airway obstruction. METHODS: Respiratory pressure-time curves were recorded during JV(S) in a tracheal lung model using a pig's trachea and an embolectomy catheter's air-filled balloon to simulate 60 and 80% airway obstruction. JV(S) was performed at various jet frequencies (F(jet) 30 min(-1), 60 min(-1), and 100 min(-1)) and driving pressures (1 bar and 2 bar). RESULTS: JV(S) was associated with generation of PEEP(i), which depended on driving pressure, the degree of obstruction, and on ventilatory frequency. CONCLUSIONS: In the presence of a dynamic upper airway obstruction, JV(S) via a distant injector may result in PEEP(i), which cannot be detected when airway pressure is measured in front of the obstruction. |
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Authors:
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Gerald C Ihra; Ching-Ju Tsai; Oliver Kimberger |
Publication Detail:
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Type: Journal Article Date: 2010-07-02 |
Journal Detail:
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Title: Anesthesia and analgesia Volume: 111 ISSN: 1526-7598 ISO Abbreviation: Anesth. Analg. Publication Date: 2010 Sep |
Date Detail:
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Created Date: 2010-08-24 Completed Date: 2010-09-10 Revised Date: 2011-02-26 |
Medline Journal Info:
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Nlm Unique ID: 1310650 Medline TA: Anesth Analg Country: United States |
Other Details:
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Languages: eng Pagination: 703-6 Citation Subset: AIM; IM |
Affiliation:
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Department of Anesthesia, Intensive Care Medicine and Pain Therapy, Medical University Vienna, Waehringer Guertel 18-20, AKH 9i, A-1090 Vienna, Austria. gerald.ihra@meduniwien.ac.a |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Airway Obstruction
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therapy* Animals Embolectomy High-Frequency Jet Ventilation* Models, Anatomic Positive-Pressure Respiration* Swine Tracheal Diseases / therapy |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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