Coronary artery vasospasms in a microminipig occurred afterplacing an ameroid constrictor

[摘要] References(8)A 12-month-old microminipig, weighing 12.6 kg, showed 3 repeatedepisodes of transient ST-segment elevation in 24 hr Holter electrocardiogram after placingan ameroid constrictor around the left anterior descending coronary artery. Ventricularfibrillation was noticed just after the cessation of the 24 hr Holter-electrocardiogramrecording. Direct current defibrillations and cardiopulmonary resuscitation wereperformed; however, they were unsuccessful, leading to the animal’s death. Its heart wasexcised for macroscopic analysis, which indicated that lumen of the ameroid constrictorwas not narrowed and that there was no dissection, embolus or thrombus in the coronaryarteries, indirectly suggesting that coronary artery vasospasm may have caused theischemic attacks. Thus, microminipig may possess some potential to havecoronary vasospasm.

[学科分类] 兽医学

[关键词] ameroid constrictor;coronary vasospasm;sudden cardiac death