蓝婴综合征（blue baby syndrome）又称青紫婴儿症、发绀婴儿症、蓝婴症，是指婴儿因先天性心脏缺损或后天性缺氧，血含氧量较正常人低[1]，造成发绀现象。因患儿身体呈蓝紫色而得名。
发病原因
- 饮水或食物中含有过多的硝酸盐类。因为硝酸盐代谢成亚硝酸，会和血红素结合，降低血红素携带氧气的功能，造成缺氧。
参考文献
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