The drug of choice for hypoparathyroidism is:

Correct Answer: A

Rationale: The correct answer is A: Parathormone. In hypoparathyroidism, there is a deficiency of parathyroid hormone (PTH), leading to low calcium levels. Parathormone replacement therapy, in the form of synthetic PTH, is the most effective treatment to restore calcium balance. Calcium lactate (B) is a calcium supplement but does not address the underlying cause. Vitamin D (C) helps with calcium absorption but does not directly treat the PTH deficiency. Pamidronate (D) is a bisphosphonate used for conditions like osteoporosis, not hypoparathyroidism.

Correct Answer: C

Rationale: Rationale for Correct Answer C (Centchroman): 1. Centchroman is a non-hormonal male contraceptive that acts by inhibiting sperm production without affecting libido or potency. 2. It is a selective estrogen receptor modulator, which helps in contraception without affecting male sexual function. 3. Centchroman's mechanism of action does not interfere with testosterone levels or sexual desire, making it an effective male contraceptive option. 4. Studies have shown that centchroman is safe and well-tolerated, making it a suitable choice for male contraception. Summary of Incorrect Choices: A. Cyproterone acetate: It is a hormonal contraceptive that can affect libido and potency due to its anti-androgenic properties. B. Goserelin: It is a hormonal drug that suppresses testosterone production, potentially affecting libido and potency. D. Gossypol: It is a plant-derived compound that can impact sperm production and fertility without preserving libido and potency.

Correct Answer: C

Rationale: The correct answer is C: Endometrial carcinoma. Oral contraceptives actually decrease the risk of developing endometrial cancer by regulating hormone levels. A: Hypertension can be a side effect of oral contraceptives due to changes in blood pressure. B: Leg vein thrombosis risk increases due to estrogen in oral contraceptives causing blood clotting. D: Gall stones risk can increase with oral contraceptives due to changes in bile composition.

Correct Answer: B

Rationale: Rationale: Levonorgestrel is the recommended emergency contraceptive. Choice A includes ethinylestradiol, which is not needed. Choice C uses Mifepristone, which is not typically used for emergency contraception. Choice D is incorrect because it includes options A and C, which are not recommended. Choice B, Levonorgestrel 0.75 mg taken twice 12 hours apart, is the correct regimen as per guidelines. It provides effective protection against unintended pregnancy without the need for additional unnecessary components.

Correct Answer: A

Rationale: The correct answer is A: Combined estrogen + progestin oral pill. This form of hormonal contraception is the most popular because it is highly effective in preventing pregnancy by inhibiting ovulation, thickening cervical mucus, and altering the endometrium. It is easy to use, reversible, and offers additional non-contraceptive benefits like reducing menstrual cramps and acne. Phased estrogen + progestin oral pill (B) and postcoital estrogen + progestin pill (C) are not commonly used methods. Depot progestin injection (D) is effective but less popular due to the need for healthcare provider administration and potential side effects like irregular bleeding.