A Review on the Rational Use of Antibiotics in Hospitalized Pneumonia Patients Based on Treatment Guidelines

Pneumonia remains a major cause of hospitalization, morbidity, and mortality worldwide, requiring prompt and appropriate antibiotic therapy for effective management. However, irrational antibiotic use, including unnecessary broad-spectrum coverage, prolonged duration, and poor adherence to guidelines, contributes significantly to antimicrobial resistance, adverse drug reactions, and increased healthcare costs. This review evaluates the rational use of antibiotics in hospitalized pneumonia patients based on established treatment guidelines such as IDSA/ATS and WHO recommendations. A literature review of studies published between 2015 and 2025 was conducted using databases including PubMed, Scopus, Web of Science, and Google Scholar. Evidence indicates that timely empirical therapy, culture-guided de-escalation, shorter treatment duration, and early intravenous-to-oral switch improve clinical outcomes, reduce hospital stay, and lower costs. Conversely, delayed or inappropriate therapy is associated with increased mortality and longer hospitalization. Antimicrobial stewardship programs, prescription audits, and multidisciplinary collaboration involving pharmacists, microbiologists, and physicians play a vital role in optimizing antibiotic use. Overall, rational antibiotic prescribing in hospitalized pneumonia patients requires a patient-centered, evidence-based approach to improve outcomes and preserve antibiotic effectiveness.