Acute myocardial infarction was produced by The circumflex branch of left coronary artery ligation in pregnant group on the 12th day of pregnancy and in control group 3 days after oestrum.

• 妊娠组于怀孕第12天，对照组于发情期后3天结扎冠状动脉左室支建立心肌梗死模型。