患者,男,60岁,因急性心肌梗死收入院。住院第二天心尖部出现2/6—3/6级粗糙的收缩期杂音,间断伴喀喇音,经抗缺血治疗后心脏杂音消失。该患者最可能的诊断为( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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