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Calcium channel blockers (CCBs) like amlodipine cause vasodilation of arterioles, leading to capillary leakage and peripheral edema. ACE inhibitors, diuretics, and beta-blockers do not cause edema to this degree. Combination with ACE inhibitors may reduce CCB-related edema.

Sterility is maintained if the syringe barrel is held with sterile gloves. Touching plunger tips or needle shafts contaminates the sterile pathway. Needle caps should not touch surfaces. Correct technique preserves sterility and patient safety in CSPs.

Antibiotic stewardship requires de-escalation to narrow-spectrum agents once culture results are available. This reduces resistance, toxicity, and costs. Documentation without change (A) is ineffective. Stopping antibiotics altogether (D) risks undertreatment. IV fluids (C) are unrelated. Pharmacist intervention ensures safe, targeted therapy.

Ceftriaxone is incompatible with calcium-containing solutions (e.g., Lactated Ringer’s), as it can precipitate, particularly in neonates, causing life-threatening emboli or renal damage. Therefore, ceftriaxone must not be mixed or co-administered with calcium-containing IV solutions. Normal saline (A), dextrose (B), and sterile water (D) are compatible. Neonates are at highest risk; strict avoidance of calcium with ceftriaxone ensures safety.

Vancomycin causes histamine release if infused too rapidly, leading to flushing, rash, pruritus, and hypotension (“red man syndrome”). To prevent this, infuse over ≥60 minutes (longer for high doses). Ceftriaxone, azithromycin, and amoxicillin do not cause this infusion-related reaction.