风心病二尖瓣狭窄出现以下哪项体征提示心功能不全()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
患者男,40岁,风湿性心脏病二尖瓣狭窄,但住院期间护士遵医嘱给予患者心电监护,患者最易出现的是( )。
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