患儿颜某,男4岁。因流涕、鼻塞、咳嗽三天,母亲给予滴鼻净(1∶1000)滴鼻,两侧鼻孔滴入药液约2ml,20min后入睡,90min后发现患儿全身出汗,面色苍白,四肢冰冷,昏睡,约4h到本院急诊拟滴鼻净中毒收入本科。体检体温36.8℃,呼吸25次/分,脉搏65次/分,血压12/8kPa,嗜睡、面色花白、四肢出汗冰冷,两侧瞳孔约4mm,对光反射存在。心率65次/分,心律不齐,心尖区第一心音明显低纯,无杂音。肺部检查无特殊。其余体征无异常。既往无心脏疾患。急查心电图:显示Ⅱ度房室传导阻滞(莫氏工型)。实验室检查:血象Hb125g/L,WBC8.0×10~9/L,分类中性0.60、淋巴 Yan children, male 4 years old. Due to runny nose, stuffy nose, cough for three days, the mother gave intranasal (1: 1000) intranasal nasal drip on both sides of the liquid about 2ml, 20min after falling asleep, 90min found that children sweat, pale, limbs Cold, lethargy, about 4h to our hospital emergency net hypotensive neonate poisoning undergraduate. Physical examination temperature 36.8 ℃, breathing 25 beats / min, pulse 65 beats / min, blood pressure 12 / 8kPa, lethargy, pale flowers, limbs sweating cold, both sides of the pupil about 4mm, the presence of light reflex. Heart rate 65 beats / min, arrhythmia, apical first heart sounds significantly lower pure, no noise. No special lung examination. The remaining signs no abnormalities. No previous heart disease.急查 ECG: Ⅱ degree atrioventricular block (Morse type). Laboratory tests: blood Hb125g / L, WBC8.0 × 10 ~ 9 / L, classification of neutral 0.60, lymphatic