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1978年3月6日,济南某建筑工地食堂误将500克亚硝酸钠当碱面,搓洗30斤猪肚,煮熟后有25名健康工人食用。食用量1~8两不等,均于食后2分钟至4小时内发病,多数在半小时内发病。临床表现:25例均有恶心、呕吐、头晕胀痛、畏寒、乏力。面色青灰,口唇、口腔粘膜及指甲明显紫绀,重者皮肤亦显青紫。患者均有瞳孔散大,最大者6毫米,持续时间最长者达72小时(随访)。瞳孔如此散大,文献资料中
March 6, 1978, Jinan, a construction site cafeteria mistakenly put 500 grams of sodium nitrite when the alkali, scrub 30 pounds of pig stomach, cooked after eating 25 healthy workers. Food consumption ranging from 1 to 8, are within 2 minutes to 4 hours after onset of illness, the majority of onset within half an hour. Clinical manifestations: 25 cases were nausea, vomiting, dizziness, pain, chills, fatigue. Looks blue and gray, lips, oral mucosa and nails significantly cyanotic, severe skin also showed bruising. Patients had mydriasis, the largest 6 mm, the longest duration of up to 72 hours (follow-up). Pupil so much, in the literature