P-177: The Relationship between Perimenstrual Nause, Vomiting and Menstrual Characteristics

Background: The premenstrual symptoms may be a sensitive marker of psycho-physiological problems that applied as a diagnostic and a reproductive health education tool and can be influenced different factors such as menstrual characteristics. So, the aim of this study was to evaluate the relationship between premenstrual nausea, vomiting and menstrual characteristics. Materials and Methods: This study was a cross-sectional study that carried on 407 high-school female in Mashhad city during in the year 2011. The sampling was random clustering method with exclusion criteria including: use combinations of hormones; suffering from medical illnesses; being a professional athlete and etc. Then participants completed written consent form. Tools study were including of: demographic/menstrual questionnaire, Higham Chart for bleeding amount and MDQ-C form (4-point Likert Scale) that recorded nausea, vomiting symptom in the last 6 months and in during of three phases of the menstrual cycle (a week before the menstrual period, menstrual bleeding and a weeks after menstruation) at menstrual cycles. Data was analyzed using SPSS version 14 software and statistical test such as Pearson correlation test and regression linear. Results: Results showed that mean ± SD age, BMI, age of menarche was 16.24 ± 1.0 (y), 21.16 ± 1.02 kg/m2, 12.78 ± 1.11 (y). 83% were passive smoker and 97% single. 5.7% had premenstrual nausea and vomiting, 20.1% menstrual nausea and vomiting and 3.9% postmenstrual nausea and vomiting. Also, the mean ± SD duration of menstrual cycle 6.8 ±1.6, length of menstrual cycle 28.06 ± 8.5, amount of menstrual bleeding 131.3 (± 1.1). 93% had menstrual duration of 3-10 (day), 46.2% amount of more than 100cc, 78.6% length of 21-42 (day), 36.4% irregular. There was a significant negative correlation between premenstrual nausea and vomiting and duration of menstrual cycle (p=0.018, r = -0.52). Conclusion: This study shows a significant association between some menstrual characteristics and nausea, and vomiting related to menstrual cycle, so it is necessary provide appropriate solutions to improving menstrual problem for students as feature mothers.