男,43岁。溃疡病史5年,突发呕血2小时入院。患者出现冷汗、脉搏细速、呼吸浅促,血压下降至80/40mmHg。需紧急进行的处理是()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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