Assessing the Role of Blood Gas Analysis in COVID-19 Patients for Early Warning and Clinical Guidance.

This study evaluates the role of blood gas analysis as an auxiliary tool for detecting and predicting the progression of COVID-19, particularly in elderly patients. Conducted at the Third Affiliated Hospital of Southern Medical University in Guangzhou, China, the research involved 106 patients categorized by age and disease severity (mild to moderate versus severe). Key blood gas parameters—including arterial/alveolar oxygen partial pressure ratio, reduced hemoglobin fraction, sodium ion, lactic acid, oxygen saturation, oxygen partial pressure, and oxyhemoglobin fraction—showed statistically significant differences between mild and critical cases, with more pronounced abnormalities in patients aged 60 and above. The findings suggest that monitoring these indicators can aid clinicians and bedside nurses in assessing respiratory function, acid-base balance, and hypoxia status to better diagnose and predict COVID-19 progression, although further research with larger samples and control groups is recommended to validate these results.