Correct Answer: D

Rationale: The correct answer is D: Platelet count. Zidovudine (AZT) is known to cause bone marrow suppression, leading to decreased platelet production. Monitoring platelet count is crucial to detect early signs of thrombocytopenia, a common adverse effect of AZT. Rationale: A) RBC count: AZT can cause anemia, not specifically affecting the RBC count. B) Serum calcium: AZT does not typically affect calcium levels. C) Fasting blood glucose: AZT can cause hyperglycemia, but fasting blood glucose monitoring is not as critical as monitoring platelet count for AZT therapy.

Correct Answer: B

Rationale: The correct answer is B: "There is an increase in the intraocular pressure." Glaucoma is a group of eye conditions that damage the optic nerve due to increased pressure within the eye. High intraocular pressure is a key factor in the development of glaucoma. Choice A is incorrect because glaucoma is not associated with an increase in vitreous humor. Choice C is incorrect as glaucoma is not related to a decrease in aqueous humor. Choice D is incorrect because glaucoma is characterized by an increase, not a decrease, in intraocular pressure. Therefore, the most accurate description to explain glaucoma to a patient is the one that mentions the increase in intraocular pressure.

Correct Answer: A

Rationale: Rationale: Right-sided heart failure leads to fluid backup in the body causing dependent pitting edema due to fluid accumulation in the lower extremities. Orthopnea and exertional dyspnea are typically seen in left-sided heart failure. Hemoptysis is associated with conditions like pulmonary embolism or lung cancer, not right-sided heart failure. Therefore, the correct answer is A as it directly correlates with the symptoms of right-sided heart failure.

Correct Answer: A

Rationale: The correct answer is A: Expressive aphasia and paralysis on the right side of the body. In a right-handed person, the left side of the brain controls language and right-sided motor function. A stroke affecting the left side of the cortex would lead to expressive aphasia due to damage to Broca's area, causing difficulty in speaking and forming words. Paralysis on the right side of the body would result from damage to the motor cortex in the left hemisphere. Choices B, C, and D are incorrect because they do not align with the typical deficits seen in a person with a stroke affecting the left side of the cortex in a right-handed individual.

Correct Answer: A

Rationale: The correct answer is A: Phagocytosis. Macrophages and neutrophils are both types of phagocytes responsible for engulfing and digesting pathogens such as bacteria. This process helps in clearing infections and maintaining immune homeostasis. Summary: - Choice B (Complement fixation) is incorrect as it refers to a process where complement proteins bind to pathogens to enhance their removal by phagocytes. - Choice C (Antibody production) is incorrect as macrophages and neutrophils do not produce antibodies. They mainly rely on phagocytosis for pathogen clearance. - Choice D (Suppression of autoimmunity) is incorrect as these cells are involved in innate immunity and do not play a direct role in regulating autoimmunity.