Radiologic outcomes at 5 years after severe ARDS

Area of Science:

• Pulmonary Medicine
• Radiology
• Critical Care

Background:

• Severe acute respiratory distress syndrome (ARDS) survivors often experience long-term functional limitations.
• The role of persistent radiologic abnormalities in ARDS long-term outcomes requires further investigation.

Purpose of the Study:

• To assess chest radiologic abnormalities using high-resolution CT (HRCT) 5 years after severe ARDS.
• To determine the association between HRCT findings and pulmonary symptoms, function, and quality of life.

Main Methods:

• HRCT scans were performed on 24 survivors of severe ARDS.
• Radiologic patterns (ground glass, opacification, reticulation, decreased attenuation) were scored at three lung levels and four quadrants.
• Correlation analysis was performed between HRCT findings and clinical outcomes.

Main Results:

• Seventy-five percent of patients (18/24) exhibited abnormal HRCT findings.
• Abnormalities were generally minor and located in nondependent lung zones.
• No significant correlation was observed between HRCT findings and patient-reported symptoms, pulmonary function tests, or quality of life measures.

Conclusions:

• Structural lung disease identified on HRCT 5 years post-ARDS is unlikely to be the primary cause of exercise and functional limitations.
• Extrapulmonary factors, such as muscle weakness, may be more significant contributors to disability in ARDS survivors.