Robinson W F, Huxtable C R, Pass D A, Howell J M
Aust Vet J. 1979 Aug;55(8):351-5.
Surviving puppies from three separate litters in which deaths had occurred from suspected viral myocarditis were examined clinically and electrocardiographically. Of 11 puppies examined, 5 subsequently died or were euthanised within 11 days of initial examination. ECG changes present in these puppies for 1 to 11 days prior to death were small R waves (less than 0.4 mV in lead II), S-T segment elevation, QRS notching and paroxysmal ventricular tachycardia (PVT). No clinical signs referable to the ECG changes were present before the terminal episodes of apparent sudden death or death following a brief period of dyspnoea. Multifocial subacute myocarditis was present on post-mortem examination. A sixth puppy with small R waves remained clinically normal for a further 4 weeks. It then developed severe dyspnoea which persisted for 24 hours before euthanasia. Extensive fibrosis of the left ventricle was present on post-mortem examination.
对来自三窝不同幼犬的幸存者进行了临床和心电图检查，这些幼犬窝中曾有幼犬因疑似病毒性心肌炎死亡。在接受检查的11只幼犬中，有5只在初次检查后的11天内死亡或被安乐死。这些幼犬在死亡前1至11天出现的心电图变化包括小R波（II导联小于0.4mV）、ST段抬高、QRS波切迹和阵发性室性心动过速（PVT）。在明显猝死或短暂呼吸困难后死亡的终末期之前，没有出现与心电图变化相关的临床症状。尸检发现有多灶性亚急性心肌炎。第六只出现小R波的幼犬在接下来的4周内临床状况正常。随后它出现了严重的呼吸困难，持续24小时后被安乐死。尸检发现左心室有广泛纤维化。
