患者,女性,61岁,因突然出现心悸、气促,咳粉红色泡沫痰急诊。查体:血压195/90mmHg(26/12kPa),心率136/min。护士应首先备好的药物是( )。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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