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Korean Journal of Obstetrics & Gynecology 2005;48(1):36-41.
Published online January 1, 2005.
A clinical study on macrosomia.
Chan Hee Han, So Hee Cheon, Young Lee, In Kwon, Jong Chul Shin, Sa Jin Kim
Department of Obstetrics and Gynecology, College of Medicine, The Catholic University of Korea. ksajin@catholic.ac.kr
Macrosomia is one of the important problems in obstetrics and perinatology. This study was to investigate the changing trend in incidence, area distribution, and other relavant factors of macrosomia. METHODS: We studied 2,206 cases of large babies weighing 4,000 g or more among 72,084 deliveries at Catholic Medical College Hospital from Jan. 1, 1993 to Dec. 31, 2003. The cases were divided into two group, one group from 1993 to 1998 (group I), the other group from 1998 to 2003 (group II). RESULTS: The incidence of large babies weighing 4,000 g or more was 3.06%. The incidence of macrosomia in group I was 3.02%, and that from group II was 3.14% (P=0.149). The incidence of macrosomia throughout the country was 2.5-3.3%. The average body weight of macrosomia was raised by 30 g from 4,218 +/- 224 g in group I to 4,248 +/- 246 g. in group II (P=0.003). The average of maternal body weight was raised by 246 g from 73.12 +/- 9.08 kg in group I to 75.56 +/- 9.64 kg in group II (P<0.001). According to gestational age, the percentage of macrosomia less than 38 weeks was 5.0%, that during 38 weeks and 40 weeks was 39.4%, that during 40 weeks and 42 weeks was 53.4%, more than 42 weeks was 2.2% in group I, and that in group II was 6.2%, 46.1%, 44.1%, and 3.6%, respectively. Male fetuses were 927 cases (64.69%), and female fetuses were 506 cases (35.31) in group I, and those in group II were 520 cases (67.27%), and 253 cases (32.73%), respectively. CONCLUSION: There is no change in the incidence of macrosomia past 11 years. There is no significant difference in the incidence of macrosomia throughout the country. Maternal body weight may associated with fetal body weight. Gestational weeks in group II were earlier, that in group II. Sex ratio was similar in the two groups, and male was predominant.
Key Words: Macrosomia, Maternal obesity

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