Severe Parainfluenza Viral Infection-A Retrospective Study of Adult Intensive Care Patients

Area of Science:

• Critical Care Medicine
• Infectious Diseases
• Respiratory Medicine

Background:

• Parainfluenza virus (PIV) infections are common but poorly understood in adult intensive care unit (ICU) settings.
• Limited data exists on the clinical characteristics, progression, and outcomes of PIV in critically ill adults.

Purpose of the Study:

• To describe the characteristics, clinical course, and outcomes of PIV infection in adult ICU patients.
• To identify factors associated with mortality and organ support requirements in this population.

Main Methods:

• Retrospective study of consecutive adult patients admitted to an ICU with confirmed PIV infection over a 7-year period.
• Data collected included patient demographics, laboratory results, and prognostic scores on ICU admission.
• Primary outcomes were 30-day mortality and the need for organ support.

Main Results:

• The study included 50 adult patients (mean age 67.6 years, 52% male).
• Common findings on ICU admission included a mean PaO2/FiO2 ratio of 198 mmHg and a neutrophil/lymphocyte ratio of 15.7.
• Ninety-eight percent of patients required respiratory support, and 24% needed cardiovascular support, with a 30-day mortality rate of 40%.

Conclusions:

• PIV infection in adult ICU patients is associated with substantial mortality and morbidity.
• Significant differences in clinical presentation were observed between patients with hypoxemic versus hypercapnic respiratory failure.
• Further research is needed to understand PIV pathogenesis and improve outcomes in critically ill adults.