Etonogestrel/ethinyl estradiol (NuvaRing) is noted for which characteristic?

• A. Contains only estrogen
• B. Contains only progestin
• C. Is replaced weekly for 3 weeks, followed by 1 week ring-free
• D. Releases higher doses of progestin steroids per day than estrogen

Answer: (C)

The characteristic of etonogestrel/ethinyl estradiol (NuvaRing) that is accurate is related to its replacement schedule. The NuvaRing is designed to be inserted into the vagina and left in place for three weeks, during which time it releases a combination of estrogen and progestin. After this three-week period, the ring is removed and a week-long ring-free interval occurs, allowing for a withdrawal bleed similar to a menstrual period. This method of delivery offers convenience and adherence due to the easy monthly replacement compared to daily pills.

The other options incorrectly describe the properties of NuvaRing. It contains both estrogen and progestin, not just one or the other, so it does not fit the description as only containing estrogen or only containing progestin. Additionally, the daily release of hormones from the NuvaRing is formulated to deliver lower doses of progestin relative to estrogen, making the option about higher doses of progestin also inaccurate. Understanding these delivery methods and hormone compositions is crucial for effective contraceptive counseling and management in women's health.