10岁患儿,在水库游泳时发生溺水,经过抢救已存活20h,现突然出现咳嗽发憋,呼吸困难,咳血性泡沫痰,最可能的病情是()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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