Perinatal outcomes in hyperemesis gravidarum patients as compared to normal pregnancy

Objective : To study perinatal outcomes in hyperemesis gravidarum (HG) patients as compared to normal pregnancy. Methods : We performed retrospective analysis of pregnancy records of obstetric admission during 9-years period (between 1995 and 2003). We identified 77 women who admitted for control of HG after diagnosed as HG and delivered during the study period. Women treated as out-patients for hyperemesis and delivered at other hospital were excluded Multiple gestation and stillbirth were also excluded from analysis. Subjects were stratified into groups of mild and severe HG according to the presence of at least one of the following criteria: ketonuria, increased hematocrit, and/or abnormal electrolytes. All patients without HG on whom records were available and who delivered during the study period were included as controls. Student T-test, chi square test, Kruskal-Wallis test and Mann-Whitney's U test were used. Results: Among 77 women, 31 patients were diagnosed as having mild HG and 46 patients as having severe; 41205 patients were defined as controls. Maternal age, gravidity, maternal weight gain from preconception to delivery, maternal anemia were not significantly different between hyperernesis patients and control group. Mean birth weight, mean gestational age, neonatal sex ratio, Apgar score, delivery route were not significantly different. Pregnancy outcome variables and maternal characteristics for mild, severe HG and control group were also similar. Conclusion : Women with hypererresis have similar maternal characteristics to the general population and have similar pregnancy outcomes. And there were no significantly difference between mild and severe hyperemesis patients.