Computed tomography comparison of bony pelvis dimensions between women with and without genital prolapse
Computed tomography comparison of bony pelvis dimensions between women with and without genital prolapse
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DOI：
10.1016/s0029-7844(98)00376-7
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发表时间：
1999-02-01
影响因子：
7.2
通讯作者：
Karram, MM
中科院分区：
文献类型：
--
作者：
Sze, EHM;Kohli, N;Karram, MM
目的：比较骨性骨盆尺寸之间的白色妇女和没有生殖器脱垂使用计算机断层扫描（CT）pelvimetry.Methods：34个多产的白色妇女阴道脱垂超过处女膜和34个匹配的白色对照组没有迹象或症状的盆腔支持缺陷进行CT pelvimetry。测量骨盆入口的前后径和横径、骨盆中部的棘突间径和骨盆出口的结节间径。事后功效分析显示，每组需要22名女性才能检测出组间骨盆尺寸的10%差异，α误差为1%，β误差为10%，功效为90%。受试者的平均（+/-标准差[SD]）年龄为63.4 ± 8.3岁，对照组为62.9 ± 7.8岁。受试者的平均产次为3.3 +/- 1.7，而对照组为3.6 +/- 1.7。研究组之间的平均（+/- SD）前后（12.5 +/- 1.3 vs 12.8 +/- 1.0 cm）、棘突间（11.5 +/- 0.8 vs 11.2 +/- 0.9 cm）和结节间（10.0 +/- 1.0 vs 9.8 +/- 0.8 cm）直径无显著差异。有脱垂的女性盆腔入口的平均横径显著大于无脱垂的女性（12.9 +/- 0.7 vs 12.4 +/- 0.6 cm，P = 0.006）。结论：晚期阴道脱垂的女性盆腔入口横径大于盆腔支撑正常的女性。（《妇产科》1999年;93：229- 232。(C)1999年由美国妇产科医师学会出版）。
Objective: To compare bony pelvis dimensions between white women with and without genital prolapse using computed tomography (CT) pelvimetry.Methods: Thirty-four multiparous white women with vaginal prolapse beyond the hymen and 34 matched white controls with no signs or symptoms of pelvic support defects underwent CT pelvimetry. The anteroposterior and transverse diameters of the pelvic inlet, the interspinous diameter of the midpelvis, and the intertuberous diameter of the pelvic outlet were measured. Post hoc power analysis showed that 22 women were needed in each group to detect a 10% difference in the pelvic dimensions between groups, with an alpha error of 1% and a beta error of 10%, resulting in a 90% power.Results: Mean (+/- standard deviation [SD]) age of the subjects was 63.4 +/- 8.3 years, compared with 62.9 +/- 7.8 years for controls. Mean parity of the subjects was 3.3 +/- 1.7, compared with 3.6 +/- 1.7 for controls. Mean (+/- SD) anteroposterior (12.5 +/- 1.3 versus 12.8 +/- 1.0 cm), interspinous (11.5 +/- 0.8 versus 11.2 +/- 0.9 cm), and intertuberous (10.0 +/- 1.0 versus 9.8 +/- 0.8 cm) diameters were not significantly different between study groups. Mean transverse diameter of the pelvic inlet was significantly greater in women with prolapse than those without prolapse (12.9 +/- 0.7 versus 12.4 +/- 0.6 cm, P = .006).Conclusion: Women with advanced vaginal prolapse have larger transverse inlet diameters than do women with normal pelvic support. (Obstet Gynecol 1999;93:229-32. (C) 1999 by The American College of Obstetricians and Gynecologists.).