The nurse is doing health teaching with a patient with psoriasis. Which nursing implication is a priority for a patient on infliximab to treat psoriasis?

Correct Answer: D

Rationale: Infliximab, a biologic agent used to treat psoriasis, can suppress the immune system and increase the risk of infections and blood disorders. Monitoring the complete blood count (D) is a priority to detect neutropenia, anemia, or thrombocytopenia. Monitoring weight (A), electrolytes (B), or urine output (C) is not typically associated with infliximab therapy.

Correct Answer: C

Rationale: Iron is classified as an Antianemic agent. Anemia is a condition characterized by a lack of healthy red blood cells, which are responsible for carrying oxygen to the body's tissues. Iron is essential for the production of hemoglobin, the protein in red blood cells that binds oxygen. Therefore, iron supplements are commonly used to treat iron-deficiency anemia by replenishing the body's iron stores and supporting the production of healthy red blood cells.

Correct Answer: C

Rationale: Lithium is commonly used as a mood stabilizer in the treatment of bipolar disorder. It helps reduce the intensity of manic episodes, thereby stabilizing the patient's mood and preventing extreme mood swings. While lithium is primarily known for its mood-stabilizing effects, it is not used to lower blood glucose, slow the heart, or heal ulcers.

Correct Answer: B

Rationale: Penicillins cross the blood-brain barrier mainly when meninges are inflamed (e.g., meningitis), a true statement due to increased permeability. They do require dose adjustment in renal failure, as they're renally excreted, making the lack of adjustment false and the exception. They inhibit bacterial cell wall synthesis by blocking peptidoglycan cross-linkage, a true mechanism. Piperacillin is effective against Pseudomonas, especially with tazobactam, which is true. Only 5-10% of those with prior penicillin allergy react again, also true. The renal adjustment need is critical, as accumulation risks toxicity like seizures, guiding safe prescribing in kidney dysfunction.

Correct Answer: B

Rationale: Calcium absorbs best with food-e.g., fat aids uptake, per pharmacokinetics-unlike empty stomach. Insomnia isn't typical-constipation is. Vitamin D matters-enhances absorption. Meal timing optimizes use, per guidance.