患者,男性,62岁,慢性充血性心力衰竭,行强心治疗。服药期间患者出现恶心、头痛、头晕、黄视。查体:心率45/min,三联律。护士应考虑该患者发生的情况是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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