Identification of Pleural Response Patterns: A Cluster Analysis.

Area of Science:

• Pulmonary Medicine
• Biostatistics
• Clinical Diagnostics

Background:

• Pleural effusion arises from pleural responses to various injuries.
• Characterizing these diverse pleural reactions is crucial for diagnosis.
• Previous studies lacked detailed pleural response pattern identification.

Purpose of the Study:

• To identify homogeneous patient clusters based on pleural fluid analytical characteristics.
• To define distinct pleural response patterns in patients with pleural effusion.

Main Methods:

• Prospective study of 1613 consecutive patients with pleural effusion.
• Utilized principal component and cluster analyses.
• Analyzed pleural fluid biomarkers to identify response patterns.

Main Results:

• Six distinct patient clusters were identified, varying in etiology and fluid characteristics.
• Significant differences observed across clusters in pleural fluid analysis, age, and gender.
• A direct relationship was established between cluster type and the cause of pleural effusion.

Conclusions:

• Pleural response to injury is heterogeneous.
• Similar pleural responses can occur with different etiologies, complicating diagnosis.
• Understanding these patterns is key to improving pleural effusion diagnosis.