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Most COPD readmissions occur due to poor inhaler technique and non-adherence. Pharmacist counseling and adherence programs significantly reduce readmissions. Universal nebulizers (A) and oral steroids (D) are inappropriate. Limiting albuterol (C) does not improve disease management.

Current HIV guidelines recommend continuing effective ART during pregnancy to prevent vertical transmission. Tenofovir/emtricitabine + efavirenz is considered acceptable in pregnancy, especially if viral suppression is achieved. Stopping therapy (B) risks maternal progression and transmission. Zidovudine monotherapy (C) is outdated and inferior. Efavirenz was once avoided early in pregnancy, but evidence shows safety after organogenesis; continuing therapy ensures maternal health and viral suppression. Pharmacist counseling supports adherence and perinatal care.

Vancomycin causes histamine release when infused rapidly, leading to flushing, rash, and hypotension (“red man syndrome”). To prevent this, it must be infused over ≥60 minutes (longer for larger doses). Cefepime, meropenem, and linezolid do not cause this reaction.

Antimicrobial stewardship involves optimizing antibiotic use by narrowing therapy based on cultures, discontinuing unnecessary therapy, and selecting the right drug, dose, and duration. Deprescribing (A) refers to chronic meds. Population health (C) is broader. Formulary restriction (D) is a cost-control strategy.

The most meaningful outcome is reduced readmissions, reflecting improved adherence, reconciliation, and follow-up. Diuretic counts (A), counseling numbers (C), and cost (D) measure process or expense, not clinical success.