COVID-19 pneumonia: Relationship between initial chest X-rays and laboratory findings

Area of Science:

• Radiology
• Infectious Diseases
• Pulmonology

Background:

• The COVID-19 pandemic, caused by SARS-CoV-2, has placed a significant burden on healthcare systems worldwide.
• Initial chest X-rays (CXRs) are frequently used to assess lung involvement in patients with suspected or confirmed COVID-19.
• Understanding the relationship between radiologic findings and clinical outcomes is crucial for patient management.

Purpose of the Study:

• To analyze initial chest X-ray findings in patients with RT-PCR confirmed SARS-CoV-2 infection.
• To determine the correlation between the severity of radiologic findings and clinical/laboratory parameters.
• To evaluate the utility of a radiologic severity scale in predicting hospitalization and disease severity.

Main Methods:

• Retrospective analysis of initial chest X-rays and laboratory tests in symptomatic adult patients with SARS-CoV-2.
• Radiologic findings analyzed include ground-glass opacities, consolidations, linear opacities, and pleural effusion.
• A radiologic severity scale was used to assess the extent and distribution of lung involvement.

Main Results:

• Of 761 symptomatic patients, 84% required hospitalization.
• Increased radiologic severity scores were significantly associated with higher hospitalization rates.
• The extent of lung involvement on initial CXRs correlated significantly with laboratory parameters (platelets, lymphocytes, C-reactive protein) and symptom onset time.

Conclusions:

• A radiologic severity scale for chest X-rays can be a valuable tool in diagnosing and managing COVID-19 patients.
• Greater radiologic severity on initial CXRs predicts increased need for hospitalization.
• Radiologic severity is linked to significant alterations in key laboratory parameters, reflecting disease severity.