Gynaecology & Obstetrics All of the following mechanisms might account for a reduce-risk of upper genital tract infection in users of progestin – releasing lUDs, except: A Reduced retrograde menstruation B Decreased ovulation C Thickened cervical mucus D Decidual changes in the endometrium 💡 Explanation All of the following mechanisms might account for a reduce-risk of upper genital tract infection in users of progestin - releasing lUDs, except: ✓ Correct Answer: B. Decreased ovulation