Incidence of Abnormal Uterine Bleeding in individuals who used hormonal contraceptive methods and referred to Semnan health centers (2006-2007)

Introduction: In recent century, the rapid growth of population threats life. This shows the necessity of using contraception methods. In most women who use hormonal methods as acontraceptive method, uterine bleeding occurs and it result in that they stop using the methods and therefore leads to unwanted pregnancies. In this study,we investigated the incidence of Abnormal uterine bleeding (AUB) in the different kinds of hormonal methods. Material and Methods: This study was performed on 390 married women with normal menstruation and in age of 15-35 years who referred to Semnan health centers. They had used one of the hormonal methods at least more than one month. 130 women used DMPA, 130 women used minipill and 130 persons used LD tablets. All women who had AUB following using one of the hormonal methods were considered as AUB due to the hormonal method, excepet those had AUB for another reason that it was proved by sonography or other investigations. Patients’ information were exactly recorded in questionnaires. Results: The incidence of metrorrahgia in minipill and DMPA was more than its incidence for LD method and the incidence of oligomenorrhea in DMPA method was more than minipill and LD method. In addition, the incidence of amenorrhea in DMPA method was more than minipill. The period of using of these methods had reverse effect on the incidence of oligomenorrhea, polymenorrhea and menorrahgia but it had a direct effect on the incidence of amenorrhea. The incidence of menorrahgia in the 15-20 years old persons was more than other ages. Conclusion: The incidence of AUB in LD method is very low and seems it might be the most suitable hormonal contraceptive method, in case women aren't prohibited from using LD tablet. Regarding the high incidence of abnormal bleeding in minipill method, using another method instead of minipill method for contraception is recomened to women