Characteristics of Pneumonia in Intensive Care Unit Patients: A Literature Review

Background: Pneumonia in the Intensive Care Unit (ICU) is a major cause of morbidity and mortality, including community-acquired pneumonia (CAP) requiring ICU admission, hospital-acquired pneumonia, and ventilator-associated pneumonia. This literature review focuses on patient characteristics and common causative pathogens. Methods: This study is a literature review through worldwide sources within the year 2020-2025 focusing only on research articles in English. 10 articles were collected but only 4 were analysed as it adheres to the inclusion criteria Results: Advanced age (>60) and male gender is a common characteristic of pneumonia ICU patients. The common patient profile is characterized by hypertension and diabetes mellitus. Common pathogens are Klebsiella pneumoniae and Acinetobacter baumannii that are typically found to have high levels of antibiotic resistance. Leukocyte and neutrophils are in normal rage with high procalcitonin current Conclusion: The current summary on ICU pneumonia patients characteristics are advanced age with underlying comorbidity. Management strategies must consider the pathogens profiles guided by local antimicrobial resistance data. A key takeaway from recent research is the critical need for region-specific data to inform empiric antibiotic therapy and improve outcomes.