支气管阴性异物早期X线诊断分析
Aerospace Medicine（2009）
Abstract
支气管异物可发生于任何年龄,以5岁以下儿童常见.据统计,异物停留于下叶支气管远比上叶支气管多,右侧主支气管远比左侧主支气管多.这是因为右主支气管几乎为器官的直接延伸,管径大而直,气流量也较大,故异物多进入右下叶支气管内.
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