（）是术中心肌坏死的独立危险因素

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【单选题】【消耗次数：1】

（）是术中心肌坏死的独立危险因素

① MAP下降超过基础值的30%

② MAP＜65mmHg且累积时间超过30min

③ SBP下降超过基础值的50%持续5min以上

④ MAP<60 mmHg超过20 min

⑤ MAP<55 mmHg超过10 min

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