A 45-year-old woman is seeking advice on contraception. She is considering using an intrauterine device (IUD). The nurse should inform her that the IUD is effective for:

Correct Answer: A

Rationale: The correct answer is A: 5 to 10 years. IUDs are long-acting reversible contraceptives effective for 5 to 10 years depending on the type. Hormonal IUDs last around 5 years, while copper IUDs can last up to 10 years. This extended duration provides reliable contraception for an extended period with minimal user intervention. Choice B: 1 to 2 years is incorrect because IUDs have a longer duration of effectiveness. Choice C: 3 to 5 years is incorrect as it falls short of the typical duration of effectiveness for most IUD types. Choice D: Indefinitely is incorrect as IUDs do have a maximum effective period, after which they need to be removed or replaced.

Correct Answer: A

Rationale: The correct answer is A: Albumin. Albumin is a protein normally found in blood but not in urine. Its presence in urine, known as proteinuria, may indicate a problem with the kidneys such as kidney damage or dysfunction in filtering blood. Bilirubin (B) is a product of red blood cell breakdown and its presence in urine indicates liver or bile duct issues. Ammonium (C) is a normal byproduct of protein metabolism and is excreted in urine. Urea (D) is a waste product of protein metabolism and is normally found in urine.

Correct Answer: D

Rationale: The correct answer is D. Angiotensin II does not decrease blood pressure; it actually increases blood pressure through vasoconstriction. Renin cleaves angiotensinogen to form angiotensin I, and ACE converts angiotensin I to angiotensin II. Aldosterone acts on the kidneys to increase sodium and water reabsorption, leading to increased blood volume and pressure. Therefore, D is incorrect because Angiotensin II causes vasoconstriction and increases blood pressure.

Correct Answer: B

Rationale: The correct answer is B: Phimosis. Phimosis is the adhesion of the prepuce to the head of the penis, leading to the inability to retract the foreskin. This condition can cause pain, difficulty urinating, and increased risk of infections. Paraphimosis (choice A) is the painful retraction of a foreskin that is stuck behind the glans. Smegma (choice C) is a buildup of dead skin cells and oils under the foreskin. Dyschezia (choice D) is difficulty in passing stools. In this case, phimosis best describes the situation of adhesion preventing foreskin retraction.

Correct Answer: C

Rationale: The correct answer is C: Gentamycin. Gentamycin is known to have potential harmful effects on the fetus, such as causing hearing loss and kidney damage. This is due to its ability to cross the placental barrier. Amoxicillin (B) and Cephalexin (D) are both considered safe for use in pregnancy and are commonly prescribed for UTIs. Nitrofurantoin (A) is typically avoided in the third trimester due to the risk of hemolytic anemia in the newborn, but it is considered safe earlier in pregnancy. Therefore, Gentamycin is the correct choice as it poses a higher risk to the fetus compared to the other antibiotics.