Utilization of a model lung system to assess the effects of an inspiratory impedance threshold valve on the relationship between active decompression and intra-thoracic pressure

Atsushi Sugiyama, Keith G Lurie, Yoshikane Maeda, Yoshioki Satoh, Mutsuaki Imura, Keitaro Hashimoto

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Use of an inspiratory impedance valve has recently been shown to increase the efficacy of standard and active compression-decompression cardiopulmonary resuscitation. We evaluated the effects of a prototypic impedance valve on the relationship between the active decompression and intra-thoracic pressure using a mechanical model lung system. Intermittent impedance to inspiratory flow of respiratory gases during the decompression phase of active compression-decompression cardiopulmonary resuscitation significantly decreased the intra-thoracic pressure, while the pressure was almost zero cm H2O during the cardiopulmonary resuscitation cycle when the impedance threshold valve was not functioning. Thus, this mechanical model will help in evaluating the valve as well as in optimizing its function by simulating various forms of lung disease. Copyright (C) 1999 Elsevier Science Ireland Ltd.

Original languageEnglish (US)
Pages (from-to)231-234
Number of pages4
JournalResuscitation
Volume42
Issue number3
DOIs
StatePublished - Nov 1 1999

Keywords

  • Active compression-decompression
  • Impedance
  • Lung

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