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目的 超声法测定妊娠中晚期跟骨骨密度。方法 对 170例不同孕期孕妇用超声骨密度测定仪测量跟骨骨密度 (BMD) ,同期选择 2 0例正常健康非孕期妇女做对照。结果 各孕期BMD较对照组明显下降 ,P <0 0 5 ;各孕周之间BMD呈明显负相关 ,P <0 0 1;不同新生儿体重组别的BMD无差异 ,P >0 0 5。结论 妊娠中晚期BMD下降 ,用超声骨密度仪测定孕期BMD简便易行 ,安全无创。
Objective To measure the density of calcaneus in late pregnancy by ultrasound. Methods The bone mineral density (BMD) of the calcaneus was measured in 170 pregnant women of different gestational ages by ultrasonic bone densitometry and compared with 20 normal non-pregnant women during the same period. Results BMD in pregnancy decreased significantly compared with that in control group (P <0.05). There was a significant negative correlation between BMD in each gestational age (P <0.01). There was no significant difference in BMD between different weight groups (P> 0.05). Conclusions BMD decreased in the second trimester of pregnancy. It is easy and safe to measure BMD during pregnancy by ultrasound bone density meter.