Combined Inflammatory Markers for Predicting Acute Exacerbations in Chronic Obstructive Pulmonary Disease With...

Area of Science:

• Pulmonary Medicine
• Inflammation Biomarkers
• Critical Care

Background:

• Acute exacerbations of chronic obstructive pulmonary disease (AECOPD) can lead to respiratory failure (RF).
• Identifying reliable predictors for AECOPD with RF is crucial for timely intervention and improved patient outcomes.
• Systemic inflammation plays a significant role in the pathophysiology of AECOPD.

Purpose of the Study:

• To evaluate the predictive value of neutrophil-lymphocyte ratio (NLR), C-reactive protein/albumin ratio (CAR), and serum amyloid A (SAA) for AECOPD complicated by RF.
• To assess the combined predictive power of these inflammatory markers in patients with AECOPD and RF.
• To analyze the association between these markers and one-year readmission rates in AECOPD patients with RF.

Main Methods:

• Retrospective study of 198 patients with AECOPD.
• Patients were divided into two groups: with RF (n=70) and without RF (n=128).
• Comparison of baseline characteristics and inflammatory markers (NLR, CAR, SAA) between groups; ROC curve analysis for predictive value.

Main Results:

• Patients with RF showed significantly higher levels of white blood cells, neutrophils, C-reactive protein (CRP), SAA, NLR, and CAR.
• The RF group had a higher one-year readmission rate.
• ROC analysis indicated predictive value for NLR (0.705), CAR (0.659), and SAA (0.656); combined assessment yielded an ROC area of 0.717.

Conclusions:

• NLR, CAR, and SAA are significant predictors of AECOPD with RF.
• The combined assessment of NLR, CAR, and SAA reliably reflects systemic inflammation in AECOPD with RF.
• These markers hold predictive value for AECOPD complicated by respiratory failure.