Obstetrics & Gynaecology – MCQ 60 – Genital tract infection and progestin IUCD

All of the following mechanisms might account for a reduced risk of upper genital tract infection in users of progestin releasing IUDs, except:
A. Reduced retrograde menstruation
B. Decreased ovulation
C. Thickened cervical mucus
D. Decidual changes in the endometrium

Correct answer : B. Decreased ovulation

Factors decreasing risk of upper genital tract infection in users of progestin releasing intrauterine contraceptive device:

Reduced retrograde menstruation – prevents seeding of fallopian tube with bacteria
Thickened cervical mucus – decreases bacterial penetration
Decidual changes in the endometrium – making it less susceptible to infection

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