An oral iron supplement is prescribed for a patient. The nurse would question this order if the patient’s medical history includes which condition?

Correct Answer: B

Rationale: The correct answer is B: Hemolytic anemia. Oral iron supplements can exacerbate hemolytic anemia by increasing the production of red blood cells, which can worsen the condition. Other choices (A, C, D) are not contraindications for prescribing an oral iron supplement. Decreased hemoglobin indicates a need for iron supplementation, weakness can be a symptom of iron deficiency anemia (which would require iron supplementation), and concurrent therapy with erythropoietics can be used in combination with iron supplements to treat anemia.

Correct Answer: A

Rationale: The correct answer is A: Lidocaine. Lidocaine is a toluidine derivative due to its chemical structure containing a toluidine group. The toluidine derivative refers to the presence of a methyl group on the amino nitrogen atom, as seen in Lidocaine. Bupivacaine (B) is an amino amide local anesthetic, not a toluidine derivative. Prilocaine (C) is an amino amide local anesthetic like Bupivacaine. Procaine (D) is an ester local anesthetic, not a toluidine derivative. Hence, the correct choice is A (Lidocaine) as it meets the criteria of being a toluidine derivative.

Correct Answer: A

Rationale: Rationale: A is correct because lobeline is a plant derivative found in Lobelia plants, acting as a cholinomimetic with lower potency than nicotine but similar action spectrum. Nicotine is a potent cholinomimetic derived from tobacco. Pilocarpine is a cholinomimetic derived from the Pilocarpus shrub with different actions. Carbachol is a synthetic cholinomimetic with different properties. Acetylcholine is a neurotransmitter, not a plant-derived cholinomimetic.

Correct Answer: C

Rationale: The correct answer is C: Bronchial asthma. Antimuscarinic drugs can worsen bronchial asthma due to their potential to cause bronchoconstriction. Glaucoma (A), myasthenia (B), and paralytic ileus/urinary bladder atony (D) are contraindications for antimuscarinic drugs due to their exacerbation of symptoms in these conditions. Glaucoma can worsen due to increased intraocular pressure, myasthenia can lead to muscle weakness, and antimuscarinic drugs can further inhibit bowel and bladder function in paralytic ileus and urinary bladder atony.

Correct Answer: D

Rationale: Beta2 receptor stimulation primarily leads to vasodilation, bronchodilation, and relaxation of smooth muscles in non-cardiac tissues. It does not cause tachycardia, which is primarily mediated by Beta1 receptor stimulation. Therefore, option D is the correct answer. Option A is incorrect because Beta2 stimulation does not stimulate renin secretion. Option B is incorrect as Beta2 stimulation increases potassium concentration in plasma. Option C is incorrect as Beta2 stimulation causes relaxation of bladder and uterus muscles.