Background: Hyperemesis Gravidarum is the pernicious vomiting during pregnancy that causes various complications. This present was investigated to relationship between Helicobacter Pylori and Hyperemesis Gravidarum. Methods and Materials: 80 women with 7-16 gestational age, participated in this case-control study. It was done in Obstetric Clinical of Shabihkhani Hospital in Kashan from April to July 2008.The case group had Hyperemesis Gravidarum but the control group did not. The criteria for Hyperemesis Gravidarum were pernicious vomiting (more than 3 times a day) and the presence of one pluse ketonuria. Serum titre of anti Helicobacter pylori IgG with standard ELAZA kit in each group then compared. Chi square test was applied for data analysis and significancy was P-Value less than 0.05. Results: The mean of age was 25.4±4.5 in case and 22.4±4.6 in control group. There were no statistically significant differences in age, gestational age, gravity and parity between two groups. The frequency of Helicobacter Pylori was 75% in case and 35% in control group. Difference was significant (p=0.001). Conclusion: In this study, significant relationship between Hyperemesis Gravidarum and Helicobacter Pylori was seen. Regarding to Helicobacter Pylori causes peptic ulcer and hyperemesis imitates some Peptic ulcer symptoms, more studies should be carried out to determine this relationship.

Keywords: Hyperemesis Gravidarum, Helicobacter Pylori, Immunoglobulin G, SerumTitre

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