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Military position – 军姿位
日期：2014-11-21 09:57:33
Military position – 军姿位
Military position – 军姿位，又称中度俯屈位，它是第二种常见胎势。很多胎儿在产程初期处于该方位，最后随着产程进展，转换为完全俯屈位(额先露)，因此，它属于额先露前的一种过渡胎势。
军姿位时，胎儿头略俯屈，但直于完全俯屈，其下巴离开胸部。因该胎儿姿势象军人立正姿势，故名。下图B即为军姿位。
Moderate flexion (military position) is the second most common fetal attitude. It tends to result in sinciput (forehead) presentation through the birth canal. Many fetuses assume this attitude early in labor but convert to complete flexion as labor progresses.
In moderate flexion, the head of the fetus is slightly flexed but held straighter than in complete flexion. The chin doesn’t touch the chest. This attitude is commonly called the military position because the straightness of the head makes the fetus appear to be at attention.
Attitude. A. Flexed head. B. Military position. C, D. Progressive deflection.
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