Fetal one-arm first exposed

Single buttocks first show or frank breech presentation. The fetus has double hip flexion, both knees extend straight, and the buttocks are exposed first. See you most. Breech presentation is the most common abnormal fetal position, accounting for about 3% to 4% of the total number of term births. Because the fetal head is larger than the fetal buttocks, and there is no obvious deformation of the fetal head after delivery, it is often difficult to deliver. In addition, prolapse of the umbilical cord is more common, which increases the perinatal mortality, which is 3 to 8 times that of the pillow. The buttocks are exposed with the sacrum as the indication point. There are 6 types of fetal positions: left anterior, left lateral, left and right, right anterior, right lateral, and right rear.

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