Abstract
目的 提高对新生儿鸟氨酸氨甲酰基转移酶缺乏症(ornithine carbamoyltransferase deficiency,OTCD)早期临床认识,探讨新生儿期发病的OTCD患儿的治疗并文献复习。 方法 总结2012年至2015年本院收治的2例OTCD患儿的临床资料,分析患儿的临床、生化等特点,利用质谱技术检测患儿血氨基酸和尿有机酸,初步确定诊断。 结果 例1患儿出生第3天起病,首先表现为母乳喂养下吸吮力差,胃纳减,精神偏差,少哭吵,四肢少动作,出生第4天入院,入院后2 h即出现四肢抽搐,反应一般,前囟紧张,颈略有抵抗,入院后14 h予吸氧下出现心率下降,呼吸微弱,瞳孔对光反射消失,皮肤花斑纹,肢端凉,入院后30小时余,呼吸机治疗下,患儿再次出现呼吸、心率下降,病危告知家属,最后放弃治疗。例2患儿生后约10 h出现呕吐,先后呕吐淡黄色黏液及奶汁7次,约25 h出现呼吸困难,48 h出现抽泣样呼吸,呻吟,血氨进行性升高,生后72 h血氨升高至>997.9 μmol/L。入院第5天患儿呼吸机支持下因多脏器功能衰竭死亡。 结论 新生儿期起病的男性OTCD患者预后不佳,起病急、进展快,出生后不久即可出现症状,如未及时抢救,极易死亡。
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