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Long-term results of radical pericardiectomy for constrictive pericarditis in Korean population
Min Suk Choi1,2, Dong Seop Jeong3, Jae K Oh4,5
1Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
Insights
Radical pericardiectomy offers superior long-term survival and functional recovery in constrictive pericarditis compared to conventional methods. This approach improves right ventricular function and reduces tricuspid regurgitation over time.
Area of Science:
- Cardiology
- Thoracic Surgery
- Cardiac Surgery
Background:
- The extent of pericardiectomy is crucial in managing constrictive pericarditis, yet its long-term impact remains understudied.
- This study compares the long-term outcomes of radical pericardiectomy versus conventional phrenic-to-phrenic pericardiectomy.
Purpose of the Study:
- To evaluate the long-term efficacy and safety of radical pericardiectomy compared to conventional pericardiectomy.
- To identify factors influencing long-term mortality in patients undergoing pericardiectomy.
Main Methods:
- Retrospective review of 90 patients undergoing pericardiectomy between February 1995 and April 2015.
- Patients were categorized into conventional (n=37) and radical (n=53) groups based on surgical extent.
- Long-term follow-up data on survival, functional class, and echocardiographic parameters were collected.
Main Results:
- Radical pericardiectomy demonstrated a significantly higher survival rate (74.7% vs. 50.4% at 20 years) and better New York Heart Association (NYHA) class recovery.
- Early mortality occurred only in the conventional group (4.4%) due to low cardiac output syndrome.
- Conventional pericardiectomy, redosternotomy, and high-grade tricuspid regurgitation were associated with increased late mortality.
Conclusions:
- Radical pericardiectomy leads to improved right ventricular systolic pressure and reduced tricuspid regurgitation progression over time.
- Conventional pericardiectomy is linked to higher long-term mortality, underscoring the benefits of a more extensive surgical approach.
- Preoperative tricuspid regurgitation severity is a critical predictor of long-term outcomes.
Background:
The extent of pericardiectomy is an important issue in constrictive pericarditis but its impact on long-term outcomes has been rarely reported. We compared long-term results of radical pericardiectomy with conventional phrenic to phrenic pericardiectomy.
Methods:
Ninety patients who underwent pericardiectomies between February 1995 and April 2015 were reviewed retrospectively. They were classified into conventional (n = 37) and radical (n = 53) groups according to pericardiectomy being performed anterior or posterior to the phrenic nerves, respectively. The follow-up duration at outpatient clinic was 37.6 (11.7, 86.6) months and the survival data until 91.6 (54.5, 147.0) months were obtained. The last echocardiographies were done at 22.4 (4.35, 60.85) months.
Results:
The early mortality rate was 4.4% (4/90). They all belonged to the conventional group and died of low cardiac output syndrome. The survival rate was higher in the radical group (P = .032, 74.7 ± 9.2% versus 50.4 ± 11.9% in 20 years). NYHA class of both groups had recovered until the last follow-up but the radical group showed better recovery (P < .001). The conventional pericardiectomy (HR = 6.181; 95% CI (1.042, 36.656)), redosternotomy (HR = 6.441; 95% CI (1.224, 33.889) and preoperative grade of tricuspid regurgitation (HR = 15.003; 95% CI (1.099, 204.894) were associated with late mortality. Right ventricular systolic pressure decreased, and pericardial thickening resolved only in the radical group with significant intergroup differences as time went on. Tricuspid regurgitation worsened after the operation in both groups, but it deteriorated more in the conventional group. However, it improved over time in the radical group.
Conclusions:
Radical pericardiectomy led to greater improvement in right ventricular systolic pressure and lesser deterioration of tricuspid regurgitation with the passage of time than did the conventional procedure. Conventional pericardiectomy and preoperative higher grade tricuspid regurgitation were associated with long-term mortality.
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