March 23rd, 2018

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Changes in Menstrual Cycle in Patients Undergoing Bariatric Surgery
Authors:  Shilpa Bhandari, M.D., Pallavi Agrawal, M.D., Ishita Ganguly, M.D., Aparna Singh, M.D., and Mohit Bhandari, M.D.
  OBJECTIVE: To evaluate the menstrual pattern of women of reproductive age with morbid obesity and to follow the changes in their menstrual pattern following surgically-induced weight loss.

STUDY DESIGN: A total of 134 women aged 18–45 years with a BMI ≥35 kg/m2
who had undergone bariatric surgery were included in the study. Patients were questioned regarding pre- and postoperative menstrual cycles, obstetric history including miscarriage and abortion, history of hysterectomy or bilateral oophorectomy, fertility medication history, and contraceptive history. Weight and BMI measurements were taken at the follow-up visit.

RESULTS: Fifty-eight patients with irregular menstrual periods resumed normal cycles after the 1 year postoperatively; however, in 9 patients menstrual pattern changed from a preoperative normal pattern to an irregular pattern postoperatively. The regularization of periods was seen maximally in oligomenorrhea (76.6%) cases.

CONCLUSION: Anovulation resulting in oligomenorrhea and/or amenorrhea is a common problem in morbidly obese patients. These menstrual irregularities have a high rate of resolution after bariatric surgery.
Keywords:  bariatric surgery, menstrual cycle, obesity
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