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| Macrosomia primipara by different delivery way pelvic diaphragm in recent |
| LIN Chong1, WANG Xing-tian2 |
1. Department of Ultrasound, the Affiliated Maternity and Child Health Care Hospital of
Xuzhou Medical College, Xuzhou Jiangsu 221009, China;
2. Department of Ultrasound, the Affiliated Hospital of Xuzhou Medical College, Xuzhou Jiangsu 221009, China |
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Abstract Objective: To investigate the short-term effects of different fetal macrosomia delivery methods on the morphology of the pelvic diaphragm hiatus in the primiparas. Methods: A total of 40 primiparous women were divided into postnatal normal newborn group(2 500~3 999 g, 20 cases) and postnatal fetal macrosomia group(≥4 000 g, 20 cases). Further, the whole 40 primiparas were grouped in the light of delivery way: postnatal normal newborn vaginal delivery group(10 cases) and caesarean group(10 cases), postnatal fetal macrosomia vaginal delivery group(10 cases) and postnatal fetal macrosomia caesarean group(10 cases). Perineal three-dimensional ultrasound was performed to observe the morphology and measure the parameters of pelvic hiatus at resting, pelvic muscle contraction and during maximum valsalva maneuver. Results: Regardless of the resting stage, anal stage and tension stage, the pelvic diaphragm hiatus anteroposterior diameter, left-right diameter, area and perimeter of the postnatal fetal macrosomia vaginal delivery group are greater than that of the postnatal fetal macrosomia caesarean group, postnatal normal newborn vaginal delivery group and postnatal normal caesarean group(P<0.05). The anteroposterior diameter, left-right diameter, area and perimeter in the anal stage and the area of postnatal fetal macrosomia caesarean group in the tension period are higher than postnatal normal caesarean group(P<0.05), with statistical significance. In the tension stage, the postnatal fetal macrosomia caesarean group diaphragm hiatus, left-right diameter, perimeter are greater than postnatal normal newborn vaginal delivery group and caesarean group(P<0.05), with statistical significance. Conclusion: Different ways of delivery have different influence on the primipara pelvic diaphragm pregnancy and childbirth are more likely to cause the change of the morphology and size of the pelvic diaphragm hiatus. Cesarean has less injury on pelvic diaphragm for first-time mothers than natural labor.
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Received: 30 May 2016
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