A 43-year-old woman recently diagnosed with endometriosis started a treatment with medroxyprogesterone, one tablet daily. Which of the following effects most likely occurred after a few days of therapy?

Correct Answer: A

Rationale: The correct answer is A: Decreased body temperature. Medroxyprogesterone is a progestin that can suppress ovulation and reduce estrogen levels. Estrogen influences thermoregulation, so a decrease in estrogen levels can lead to a lower body temperature. The other choices are incorrect because B: increased estrogen secretion would be unlikely with progestin treatment, C: increased ventilatory response to carbon dioxide is not a typical effect of medroxyprogesterone, and D: decreased kidney excretion of sodium and water is not directly related to this medication.

Correct Answer: C

Rationale: The correct answer is C: Calcitriol. Calcitriol is the active form of Vitamin D and is used to treat Vitamin D deficiency. The boy likely has a deficiency as he is young and may not be getting enough sunlight or dietary sources. Calcitriol helps the body absorb calcium and phosphorus, essential for bone health. Cholecalciferol (A) is Vitamin D3, not the active form. Calcitonin (B) is a hormone that regulates calcium levels but not typically used for Vitamin D deficiency. Teriparatide (D) is a medication for osteoporosis, not Vitamin D deficiency. Therefore, Calcitriol is the most appropriate choice for this boy.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.