title: Hands-on defibrillation has the potential to improve the quality of cardiopulmonary resuscitation and is safe for rescuers-a preclinical study.
abstract: BACKGROUND
  Recently, it has been demonstrated that rescuers could safely provide a low, static downward force in direct contact with patients during elective cardioversion. The purpose of our experimental study was to investigate whether shock delivery during uninterrupted chest compressions may have an impact on cardiopulmonary resuscitation (CPR) quality and can be safely performed in a realistic animal model of CPR.
  
  
  RESULTS
  Twenty anesthetized swine were subjected to 7 minutes of ventricular fibrillation followed by CPR according to the 2010 American Heart Association Guidelines. Pregelled self-adhesive defibrillation electrodes were attached onto the torso in the ventrodorsal direction and connected to a biphasic defibrillator. Animals were randomized either to (1) hands-on defibrillation, where rescuers wore 2 pairs of polyethylene gloves and shocks were delivered during ongoing chest compressions, or (2) hands-off defibrillation, where hands were taken off during defibrillation. CPR was successful in 9 out of 10 animals in the hands-on group (versus 8 out of 10 animals in the hands-off group; not significant). In the hands-on group, chest compressions were interrupted for 0.8% [0.6%; 1.4%] of the total CPR time (versus 8.2% [4.2%; 9.0%]; P=0.0003), and coronary perfusion pressure was earlier restored to its pre-interruption level (P=0.0205). Also, rescuers neither sensed any kind of electric stimulus nor did Holter ECG reveal any serious cardiac arrhythmia.
  
  
  CONCLUSIONS
  Hands-on defibrillation may improve CPR quality and could be safely performed during uninterrupted chest compressions in our standardized porcine model.
authors: Department of Anaesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Kiel, Germany. neumann@hands-on-cpr.net
authors: Tobias
authors: T
authors: Neumann
authors: Matthias
authors: M
authors: Gruenewald
authors: Christoph
authors: C
authors: Lauenstein
authors: Tobias
authors: T
authors: Drews
authors: Timo
authors: T
authors: Iden
authors: Patrick
authors: P
authors: Meybohm
mesh_terms: D000818:Animals; D016887:Cardiopulmonary Resuscitation / Q000379:methods*; D004554:Electric Countershock / Q000379:methods*; D005260:Female; D006336:Heart Massage / Q000379:methods*; D008297:Male; D023421:Models, Animal; D013552:Swine; D014693:Ventricular Fibrillation / Q000628:therapy*
keywords: cardiac arrest; cardiopulmonary resuscitation; chest compression; defibrillation; resuscitation