The etiologic spectrum of constrictive pericarditis

Area of Science:

• Cardiology
• Thoracic Surgery

Background:

• Constrictive pericarditis is a serious condition affecting the heart's ability to function properly.
• Understanding the diverse etiologies of constrictive pericarditis is crucial for effective management.

Purpose of the Study:

• To analyze the etiologies and outcomes of constrictive pericarditis in surgically treated patients.
• To identify trends in the causes of constrictive pericarditis over time.

Main Methods:

• Retrospective review of 95 consecutive patients undergoing surgery for constrictive pericarditis between 1970 and 1985.
• Categorization of etiologies including idiopathic, post-radiotherapy, post-cardiac surgery, and others.
• Analysis of operative mortality and clinical presentation based on etiology.

Main Results:

• Idiopathic (42%) and post-radiotherapy (31%) were the most frequent causes.
• Post-cardiac surgery constrictive pericarditis emerged after 1980, accounting for 29% of cases from 1980-1985.
• Post-radiotherapy cases showed a longer latent period in recent years (11 vs. 4.75 years).
• Effusive constrictive pericarditis occurred in 24% of cases, but was absent in post-surgical cases.
• Operative mortality was 12% overall, higher in the post-radiotherapy group (21%) and lower in the idiopathic group (8%).

Conclusions:

• Post-radiotherapy constrictive pericarditis remains a concern, with evolving latent periods.
• Post-cardiac surgery constrictive pericarditis is an increasingly important etiology.
• Etiology significantly impacts presentation and operative outcomes in constrictive pericarditis.