title: Automatic mechanical device to standardize active compression-decompression CPR.
abstract: OBJECTIVE
  To develop an automatic mechanical device capable of performing active compression-decompression (ACD) CPR in laboratory animals.
  
  
  METHODS
  A swine model was used to study standard and ACD CPR. One-minute periods of standard mechanical chest compressions were alternated with mechanical ACD CPR.
  
  
  METHODS
  University hospital laboratory.
  
  
  METHODS
  A commercially available device that provided standard chest compressions only was modified to deliver ACD CPR.
  
  
  RESULTS
  The absolute difference in intrapleural pressure and tidal volume almost doubled during ACD CPR compared with that with standard CPR.
  
  
  CONCLUSIONS
  The presence of a greater negative change in intrapleural pressure confirmed that active decompression of the chest had occurred and that the device was capable of performing ACD CPR. The device provides consistent rate, depth, force, and duty cycle.
authors.affiliation: Department of Anesthesiology, University of Florida College of Medicine, Gainesville.
authors.forename: V
authors.initials: V
authors.lastname: Wenzel
authors.forename: R S
authors.initials: RS
authors.lastname: Fuerst
authors.forename: A H
authors.initials: AH
authors.lastname: Idris
authors.forename: M J
authors.initials: MJ
authors.lastname: Banner
authors.forename: W J
authors.initials: WJ
authors.lastname: Rush
authors.forename: D J
authors.initials: DJ
authors.lastname: Orban
mesh_terms: D000818:Animals; D001794:Blood Pressure; D016887:Cardiopulmonary Resuscitation / Q000295:instrumentation* / Q000592:standards; D008168:Lung / Q000502:physiology; D011312:Pressure; D013552:Swine; D013990:Tidal Volume