Investigation Of Bone Density Among Pregnant Women And Baby In A Hospital,2003

Research Purpose1. Learning pregnant woman eating habits, exploring the correlation between eating habits and BMD of pregnant women;2. Learning the factors affecting bone infants density, investigating serum25-OH-D3correlation with BMD of infants;Research MethodsThe nutritional condition was studied by questionnaires or dietary survey, and estimated by measuring the Z value obtained from ultrasound bone densitometer. Meanwhile, the weight changes in pregnancy were recorded. Finally, statistical analysis was used to find out the relationship between the nutritional condition and the BMD of pregnant women. The Z and SOS values were used to estimate the infant BMD, and collecting vein blood tests were used to study the content of25-hydroxy vitamin D. At last, statistical analysis were adopted to obtain the influences on BMD. The obtained data were typed in parallel double by EpiDate3.1data. SPSS17.0software was used to build a database used for statistical analysis.Research Results1. Compared with the national dietary guidelines, the pregnancy diets including the dairy products, poultry, fish and shrimp, eggs were surveyed to indicate that they were lower than the national standard diet (t:-29.698,-30.972,-19.460,-7.341, P<0.05);2.The weight increases between different groups were compared. The proportion in the normal weight increases of pregnant women who ate poultry and seafood daily was higher than that of pregnant women who did not eat the above-mentioned food. The differences were significant in statistics (x2=10.464,8.554, P<0.05). In the time of pregnancy,pregnant women who supply calcium intake too much poultry、seafood, so their weights gain too much, the difference was statistically significant (x2=15.073, P<0.05), prompting eating behavior and weight gain are related.3.The calcium supplement behavior between different groups was compared. The proportion in the pregnant women with the normal BMD who cramped in leg was higher than that of pregnant women who did not cramp. The differences were significant in statistics (x2=7.947, P<0.05).4.The25-(OH) D3in different age infants were different. And the difference was significant in statistics (x2=136.532, P<0.001). The differences in different age BMD infants was significant in statistics (x2=18.300, P=0.006);5.SOS values in the6-12-month-age infants were higher than those of under-6-month-age infants. The difference was significant in statistics (t=-4.330, P<0.05);6.SOS values were increased with the growth of the infants, which was a positive correlation with the infant age (r=0.334, P<0.001) and BMD (r=0.733, P<0.001);7.25-(OH) D3were increased with the increase of z value in BMD of the infants, which was a positive correlation (r=0.292, P<0.05);8.Lower BMI index was a protective factor of BMD of pregnant women. Eating poultry daily, doing the exercises and adding calcium during pregnancy were the risk factors to promote their weight increases (OR:4.707,4.434,5.452). However,Doing the exercises before pregnancy was a protective factor of weight increases of pregnant women (OR=0.184).25-OH-D3and months old were important factors of influencing the infant BMD. While BMD was used as variable Y, pregnant age, pregnant occupation, gestational weeks, pregnant dietary behavior, pregnant exercise behavior, pregnant calcium supplement were used as the independent variable x. If a=0.05, we made orderly multiple logistic regression analysis and concluded that underweight or normal weight was a protective factor (OR=0.031,0.176, P<0.05). In a Similar way, we analyzed in regression the influence factors on weight increases, showing that eating poultry daily, doing the exercises, adding calcium during pregnancy was a risk factor (OR=4.707,4.434,5.452, P<0.05) and doing the exercises before pregnancy was a protective factor (OR=0.184P<0.05). While BMD (Z value) was used as dependent variables, the months old, gender,25-OH-D3were used as independent variables. we made multiple logistic regression analysis and concluded that relative lack of25-OH-D3were protective factors (OR=0.586, P<0.05) and under6months or in the range of6to12months in age were risk factor (OR=5.865,2.366, P<0.05).Research Conclusion1.Pregnant women exist widely the problem of inadequate food intaking;Poultry food intaking during pregnancy、regular exercise can keep proper weight gaining;BMI is a protective factor for bone mineral density.Prompting us to be concerned about the health of eating habits of pregnant women duiring the pregnancy times,proper dietary guidance for pregnant women,reasonable growth in weight,and implementation of these measures will make pregnant women have a positive impact on bone health.2.Infant factors closely associated bone mineral density with25-OH-D3,tipping that we should early pay attention to supplemental amount of vitamin D for infants,sunbathing and outdoor activities as soon as possible,it will protect bones of infants,reducing the incidence of rickets.