Viano D C, Artinian C G
J Trauma. 1978 Jun;18(6):452-9. doi: 10.1097/00005373-197806000-00010.
An analysis of electrocardiograms (ECG lead II) obtained following blunt thoracic impacts conducted on 12 anesthetized pigs indicated that all animals developed some degree of trauma to the heart conducting system: sino-atrial nodal disturbances, atrio-ventricular junctional dysfunction, intraventricular conduction defects (e.g., bundle branch blocks), or ventricular fibrillation. The induced ventricular fibrillation proceeded rapidly to the demise of four animals in this study. A comparison of the occurrence of ventricular fibrillation with measured biomechanical response parameters indicated a significant correlation of ventricular dysfunction with high levels of sternal acceleration (930 g) and impact velocity (10.7 m/s). The initiation of ventricular fibrillation did not correlate with typical biomechanical thoracic injury "indicators" (i.i., level of normalized thoracic deflection, cumulative AIS, peak spinal acceleration, or applied force). An injury severity classification (MCD) was subsequently developed for the evaluation of myocardial conducting system dysfunctions.
对12只麻醉猪进行钝性胸部撞击后获得的心电图（II导联）分析表明，所有动物的心脏传导系统均出现了一定程度的损伤：窦房结紊乱、房室交界区功能障碍、室内传导缺陷（如束支传导阻滞）或心室颤动。在本研究中，诱发的心室颤动迅速导致4只动物死亡。将心室颤动的发生率与测量的生物力学反应参数进行比较，结果表明心室功能障碍与高水平的胸骨加速度（930g）和撞击速度（10.7m/s）显著相关。心室颤动的发生与典型的生物力学胸部损伤“指标”（即标准化胸部偏转水平、累积AIS、峰值脊柱加速度或施加力）无关。随后制定了一种损伤严重程度分类（MCD），用于评估心肌传导系统功能障碍。
