A study of the biweekly weight gains of noncomplicated pregnancies / 대한산부인과학회지

OBJECTIVE: To establish the standard values for proper antenatal weight gain, biweekly mean weight gains, standard deviations were calculated from the 5th to the 42nd gestational week and their percentiles were determined. And the influence of prepregnancy body mass index and/or parity on biweekly weight gain was investigated. METHODS: We analyzed the biweekly weight gain data from 910 women who had noncomplicated singleton term pregnancy. Data was categorized in three groups according to body mass index (BMI). RESULTS: The biweekly weight gain table has been determined and 'Sigmoid(S) shaped' weight gain curves were presented. Primipara and multipara have significantly less weight gain than nullipara beyond the 25th weeks. Biweekly weight gain was significantly different among prepregnancy BMI groups from the 13th week. CONCLUSION: More careful prenatal care according to the biweekly weight gain-gestational week tables is needed to prevent a lot of complications which may be associated with abnormal weight gain during pregnancy. To establish Korean standard value for antenatal weight gain, a nationwide multicenter study is needed.

A study of the monthly weight gains of noncomplicated pregnancies among 20s, early and late 30s / 대한산부인과학회지

OBJECTIVE: To calculate monthly weight gains during pregnancy among 20s, early and late 30s, and to investigate the influence of age groups on monthly weight gains. METHODS: We analyzed the monthly weight gain data from 892 women who had visited before 20 weeks of gestation and had healthy singleton term pregnancy. Data was categorized in three groups according to age (20s, early and late 30s). RESULTS: The monthly weight gain tables among 20s, early and late 30s have been determined. Monthly weight gain was not significantly different among three age groups. CONCLUSION: Although statistically insignificant among three age groups, more cautious prenatal care according to the monthly weight gain-gestational month tables for each age group is needed to prevent complications which may be associated with abnormal weight gain during pregnancy.