Journal Article

Viral Infection in Patients with Severe Pneumonia Requiring Intensive Care Unit Admission

Hong, Sang-Bum, Huh, Jin Won, Park, So-Youn, Lee, Yumi, Cho, Oh-Hyun, Choi, Sang-Ho, Lim, Chae-Man, Sung, Heungsup, Ko, Gwang-Beom, Park, Hyun Jung, Moon, Song Mi, Jeong, Jin-Yong, Chong, Yong Pil, Kim, Mi-Na, Kim, Yang Soo, Koh, Younsuck, Park, Ki-Ho, Kim, Sung-Han, Woo, Jun Hee, Do, Kyung-Hyun, Lee, Sang-Oh

2012

Overview

The role of viruses in pneumonia in adults and the impact of viral infection on mortality have not been elucidated. Previous studies have significant limitations in that they relied predominantly on upper respiratory specimens. To investigate the role of viral infection in adult patients with pneumonia requiring intensive care unit (ICU) admission. A retrospective analysis of a prospective cohort was conducted in a 28-bed medical ICU. Patients with severe community-acquired pneumonia (CAP) or healthcare-associated pneumonia (HCAP) were included in the study. A total of 198 patients (64 with CAP, 134 with HCAP) were included for analysis. Of these, 115 patients (58.1%) underwent bronchoscopic bronchoalveolar lavage (BAL), 104 of whom were tested for respiratory viruses by BAL fluid reverse-transcription polymerase chain reaction (RT-PCR). Nasopharyngeal specimen RT-PCR was performed in 159 patients (84.1%). Seventy-one patients (35.9%) had a bacterial infection, and 72 patients (36.4%) had a viral infection. Rhinovirus was the most common identified virus (23.6%), followed by parainfluenza virus (20.8%), human metapneumovirus (18.1%), influenza virus (16.7%), and respiratory syncytial virus (13.9%). Respiratory syncytial virus was significantly more common in the CAP group (CAP, 10.9%; HCAP, 2.2%; P = 0.01). The mortalities of patients with bacterial infections, viral infections, and bacterial-viral coinfections were not significantly different (25.5, 26.5, and 33.3%, respectively; P = 0.82). Viruses are frequently found in the airway of patients with pneumonia requiring ICU admission and may cause severe forms of pneumonia. Patients with viral infection and bacterial infection had comparable mortality rates.

• Publisher: American Thoracic Society,Oxford University Press
• Subject: Adenoviruses / Adolescent / Adult / Adults / Aged / Aged, 80 and over / Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy / Antigens / Antimicrobial agents / Bacterial infections / Bacterial Infections - virology / Biological and medical sciences / Bronchoalveolar Lavage Fluid - virology / Bronchoscopy / Clinical death. Palliative care. Organ gift and preservation / Cohort Studies / Coinfection - virology / Community-Acquired Infections - virology / Coronaviruses / Cross Infection - virology / Female / Humans / Infectious diseases / Influenza / Intensive care / Intensive care medicine / Intensive Care Units / Lavage / Male / Medical sciences / Middle Aged / Mortality / Nasopharynx - virology / Pathogens / Patients / Pneumonia / Pneumonia - virology / Prospective Studies / Respiratory syncytial virus / Retrospective Studies / Reverse Transcriptase Polymerase Chain Reaction / Severity of Illness Index / Streptococcus infections / Survival Analysis / Viral infections / Virus Diseases - virology / Viruses / Young Adult