title: Application of positron emission tomography in the detection of myocardial metabolism in pig ventricular fibrillation and asphyxiation cardiac arrest models after resuscitation.
abstract: OBJECTIVE
  To study the application of positron emission tomography (PET) in detection of myocardial metabolism in pig ventricular fibrillation and asphyxiation cardiac arrest models after resuscitation.
  
  
  METHODS
  Thirty-two healthy miniature pigs were randomized into a ventricular fibrillation cardiac arrest (VFCA) group (n=16) and an asphyxiation cardiac arrest (ACA) group (n=16). Cardiac arrest (CA) was induced by programmed electric stimulation or endotracheal tube clamping followed by cardiopulmonary resuscitation (CPR) and defibrillation. At four hours and 24 h after spontaneous circulation was achieved, myocardial metabolism was assessed by PET. 18F-FDG myocardial uptake in PET was analyzed and the maximum standardized uptake value (SUVmax) was measured.
  
  
  RESULTS
  Spontaneous circulation was 100% and 62.5% in VFCA group and ACA group, respectively. PET demonstrated that the myocardial metabolism injuries was more severe and widespread after ACA than after VFCA. The SUVmax was higher in VFCA group than in ACA group (P<0.01). In VFCA group, SUVmax at 24 h after spontaneous circulation increased to the level of baseline.
  
  
  CONCLUSIONS
  ACA causes more severe cardiac metabolism injuries than VFCA. Myocardial dysfunction is associated with less successful resuscitation. Myocardial stunning does occur with VFCA but not with ACA.
authors: Department of Emergency, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
authors: Cai Jun
authors: CJ
authors: Wu
authors: Department of Emergency, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
authors: Chun Sheng
authors: CS
authors: Li
authors: Department of Emergency, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
authors: Yi
authors: Y
authors: Zhang
authors: Department of Emergency, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
authors: Jun
authors: J
authors: Yang
mesh_terms: D000818:Animals; D001237:Asphyxia / Q000503:physiopathology*; D016887:Cardiopulmonary Resuscitation; D005786:Gene Expression Regulation; D006323:Heart Arrest / Q000209:etiology / Q000378:metabolism* / Q000628:therapy; D009206:Myocardium / Q000378:metabolism*; D049268:Positron-Emission Tomography / Q000379:methods*; D011897:Random Allocation; D013552:Swine; D014693:Ventricular Fibrillation / Q000378:metabolism*
keywords: Asphyxia; Cardiac arrest; Positron emission tomography; Spontaneous circulation; Standardized uptake value; Survival time; Ventricular fibrillation