Nursing Process NCLEX Questions

Correct Answer: C

Rationale: The correct answer is C because thiotepa is a cell cycle-nonspecific alkylating agent that interferes with both DNA replication and RNA transcription. Thiotepa works by cross-linking DNA strands, leading to inhibition of DNA replication and transcription, ultimately causing cell death. This mechanism of action makes it effective against actively dividing cells, such as cancer cells. Choice A is incorrect because thiotepa does not interfere with DNA replication alone. Choice B is incorrect because thiotepa affects both DNA replication and RNA transcription, not just RNA transcription. Choice D is incorrect because thiotepa does not destroy the cell membrane; instead, it acts on the genetic material within the cell.

Correct Answer: C

Rationale: The correct answer is C: Laryngeal cancer. Persistent hoarseness is a common symptom of laryngeal cancer due to vocal cord involvement. Laryngeal cancer causes changes in voice quality over time. Bacterial infection (A) usually presents with acute symptoms and resolves with treatment. Aphonia (B) is the complete loss of voice, not persistent hoarseness. Peritonsillar abscess (D) causes sore throat and difficulty swallowing, but not persistent hoarseness.

Correct Answer: D

Rationale: The correct answer is D because a brain abscess can be caused by direct invasion of the brain, spread of infection by other organs, and spread of infection from nearby sites. Direct invasion occurs when bacteria enter the brain tissue directly, such as through trauma or surgery. Infections from other organs, like the lungs or heart, can spread through the bloodstream to the brain. Infections from nearby sites, such as the ears or sinuses, can also spread to the brain. Therefore, all of these mechanisms can lead to the formation of a brain abscess. Choices A, B, and C individually do not cover all the possible causes of a brain abscess, making D the correct choice.

Correct Answer: C

Rationale: The correct answer is C: Helper T cells. Helper T cells play a crucial role in activating B cells by releasing cytokines that stimulate B cell proliferation and differentiation. They also help in the production of antibodies. Cytotoxic T cells (A) are involved in cell-mediated immunity, not humoral immunity. Suppressor T cells (B) regulate the immune response and do not directly assist in B cell activation. Neutrophils (D) are phagocytic cells involved in innate immunity, not in activating B cells in humoral immunity.

Correct Answer: A

Rationale: Step-by-step rationale for the correct answer (A): 1. Increased RBC: Hemolytic anemia leads to increased RBC production as the body compensates for the destruction of red blood cells. 2. Decreased bilirubin: Bilirubin levels decrease due to the accelerated breakdown of red blood cells. 3. Decreased Hgb and Hct: Hemolysis causes a decrease in hemoglobin and hematocrit levels as red blood cells are destroyed. 4. Increased reticulocytes: Reticulocytes are immature red blood cells released by the bone marrow in response to increased RBC destruction. Summary: - Choice B is incorrect as hemolytic anemia would lead to increased, not decreased, bilirubin levels. - Choice C is incorrect as hemolytic anemia would lead to decreased, not increased, Hgb and Hct levels. - Choice D is incorrect as hemolytic anemia would not lead to increased levels of all parameters