Background Although silent myocardial infarction (SMI) accounts for about half of the total number of MIs, the risk of HF among patients with SMI is not well established.

中文翻译：

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无症状心肌梗塞和心力衰竭的长期风险

背景 尽管无症状心肌梗死 (SMI) 约占 MI 总数的一半，但 SMI 患者发生 HF 的风险尚未确定。