What is the primary mode of action of the copper intrauterine device?...

Question

What is the primary mode of action of the copper intrauterine device?

Accepted Answer

A foreign-body inflammatory reaction in the endometrium that is toxic to sperm and ova, plus direct toxic effects of copper ions

Answer

Inhibition of ovulation

Answer

Thickening of cervical mucus

Answer

Thinning of the endometrium to prevent implantation

Answer

Suppression of the hypothalamic-pituitary-ovarian axis

uk-dfsrh MCQ (SBA): Cu-IUD Mode of Action