A nurse is providing education about spermicide to a patient.

Which of the following is a contraindication for the use of spermicide?

The correct answer is choice B.Spermicide alone is 72% effective at preventing pregnancy when used correctly and consistently.

This means that out of 100 people who use spermicide as their only birth control method, about 28 will become pregnant in a year.

Choice A is wrong because spermicide alone is not 90% effective at preventing pregnancy.It is much less effective than other methods of birth control.

Choice C is wrong because spermicide alone is not 100% effective at preventing pregnancy.No method of birth control is 100% effective, except for abstinence.

Choice D is wrong because spermicide alone is not 50% effective at preventing pregnancy.It is slightly more effective than that, but still not very reliable.

Spermicide works by damaging the sperm and blocking the entrance to the cervix.

It needs to be inserted into the vagina before sex and reapplied every time.It does not protect against sexually transmitted infections (STIs) and may increase the risk of some STIs by irritating the vaginal lining.Spermicide is more effective when combined with another method of birth control, such as condoms or diaphragms.

The correct answer is choice C.The standard days method is a calendar-based method that identifies a fixed fertile window in the woman’s cycle (days 8 to 19) when a couple should avoid sexual intercourse if they wish to prevent pregnancy.

All other days in a woman’s cycle are considered non-fertile.

The nurse should ask the client how she marks her fertile and non-fertile days on the app, as this is essential for using the method correctly.

Choice A is wrong because the standard days method does not require recording basal body temperature, which is another fertility awareness method that involves measuring and charting the daily changes in body temperature.

Choice B is wrong because the standard days method does not require identifying cervical mucus changes, which is another fertility awareness method that involves observing and tracking the changes in the quality and quantity of cervical mucus throughout the cycle.

Choice D is wrong because the standard days method does not require calculating ovulation date, which is another fertility awareness method that involves estimating the day of ovulation based on previous cycle lengths.