【摘要】 目的　研究孕期不同钙摄入量对产妇骨密度的影响。方法　对３５ 名２４ ～３１ 岁、孕１８周第１ 胎的健康妇女从孕２０ 周至产后４５ 天进行追踪研究， 以营养软件指导膳食，在热能和其他营养素摄入基本一致下，按钙摄入量分为Ⅰ、Ⅱ、Ⅲ组，钙摄入量分别为（５５０ ±１５０） ｍｇ／ｄ 、（９００ ±１５０） ｍｇ／ｄ 、（１ ５００ ±１５０） ｍｇ／ｄ ，产后４５ 天采用双能Ｘ线骨密度仪测定全身及各部位骨密度。结果　Ⅰ组多项部位骨密度值明显低于Ⅱ和Ⅲ组；与同年龄组健康妇女腰椎骨密度峰值相比，Ⅰ组仅能维持在（８５ ．１４±６ ．６１） ％ ，并出现个例腰椎骨骨质疏松；Ⅱ组可达（９０ ．７４ ±６ ．５３） ％ ，Ⅲ组则达（１００ ．４４ ±５ ．１９） ％ 。全身多部位骨密度与其均数相关极为显著，其中第３ 腰椎相关性最好；钙摄入量与各部位骨密度均呈正相关。结论　孕期钙摄入量为（３０ ．６８ ±３ ．５６） ｍｍｏｌ／ｄ ，即（１ ２７４ ．６ ±１４７） ｍｇ／ｄ 时，母体经妊娠分娩及短期哺乳仍能维持良好的骨密度，对预防骨质疏松有一定意义。采用骨密度来反映孕产妇钙营养状况时，以腰椎代表性最好。更多还原

【Abstract】 Objective To research some effects of different levels of calcium intake in the mother′s bone mineral density. Methods On the basis of insignificantly different among energy and other nutrition intake excepting calcium, 35 volunteers in pregnant 18 weeks healthy women were randomly divided intoⅠ.Ⅱ and Ⅲ group [calcium intake were (550±150) mg/d,(900±150) mg/d and (1 500±150) mg/d]. The tracked study began from pregnant 20 weeks to postpartum 45 days. All over and different body of BMD( Bone Mineral Density) were assessed by dual energy X rays absorptiometry. Results Ⅰ group of many location BMD were below that of other groups( P < 0. 01) . As compared with the same age women′s lumbar spine BMD,Ⅰ group was only maintained within the rang (85.14±6.61)%,and osteoporosis in some places of bone were found in some individual.Ⅱgroup was (90.74±6.53)%.Ⅲ group was (100.44±5.19)%. Allover different body′s BMD were significantly correlated with the average BMD( r >0.8, P <0.1),the most significant correlation was third lumbar spine. Calcium intake of women was positively correlated with different body′s BMD ( r >0.5, P <0.01). Conclusion Ⅲ group, calcium intake was (30.68±3.56)mmol/d, pass through period of prenancy, parturition and short term breast feed mother body remain the same BMD, and prevent osteoporosis. Reporting pregnant women calcium nutrition pass through BMD,lumbar spine is good representation.更多还原