Conclusion Precordial ST segment depression in AIMI is associated with multivessel lesions or larger infarction area. Active treatment should be adopted.

• 结论急性下壁心肌梗死合并心前导联ST段压低,表示多支冠脉病变或梗死面积大,应给予积极治疗,以改善患者病程和预后。