Application of Positron Emission Tomography in the Detection of Myocardial Metabolism in Pig Ventricular Fibrillation and Asphyxiation Cardiac Arrest Models after Resuscitation

作者：Wu Cai Jun; Li Chun Sheng^*; Zhang Yi; Yang Jun

来源：Biomedical and Environmental Sciences, 2014, 27(7): 531-536.

DOI：10.3967/bes2014.083

• Ventricular fibrillation
• Asphyxia
• Cardiac arrest
• Spontaneous circulation
• Positron emission tomography
• Standardized uptake value
• Survival time

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. F-18-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.
Conclusion 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.

• 出版日期2014-7
• 单位首都医科大学