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Chronic rheumatic pericarditis — Clinical Guidelines

Overview

Chronic rheumatic pericarditis, often manifesting as constrictive pericarditis, is a condition characterized by the thickening and scarring of the pericardium leading to impaired diastolic filling of the heart. This results in symptoms such as dyspnea, fatigue, and signs of right-sided heart failure. It can arise from various etiologies including idiopathic causes, post-cardiac surgery, infections, connective tissue diseases, and radiation therapy. Given its progressive nature and potential for significant morbidity, early diagnosis and appropriate management are crucial in day-to-day clinical practice to prevent irreversible cardiac dysfunction 1 4.

Pathophysiology

Chronic rheumatic pericarditis typically develops through a process of chronic inflammation and subsequent fibrosis of the pericardium. Initially, repeated inflammatory episodes lead to the accumulation of fibrinous exudates and subsequent organization into fibrous tissue. Over time, this fibrosis results in a non-compliant pericardium that restricts cardiac expansion during diastole, impeding venous return and compromising cardiac output. The non-elastic nature of the thickened pericardium disrupts normal diastolic filling, mimicking right-sided heart failure symptoms. This pathophysiological cascade underscores the importance of early intervention to prevent irreversible constriction and cardiac compromise 1 4.

Epidemiology

The incidence of chronic constrictive pericarditis varies, with idiopathic cases constituting a significant portion of reported cases. Studies suggest that the median age at presentation has been increasing, reflecting potential demographic shifts or improved diagnostic capabilities 2. Males are slightly more commonly affected, though the gender distribution can vary. Geographic and risk factor distributions highlight higher incidences in regions with higher rates of post-cardiac surgery complications, radiation therapy, and certain infectious diseases. Trends over time indicate a possible stabilization or slight increase in reported cases, possibly due to enhanced diagnostic imaging techniques 2 11.

Clinical Presentation

Patients with chronic rheumatic pericarditis typically present with symptoms reflecting cardiac dysfunction, including progressive dyspnea, fatigue, and peripheral edema. Common complaints include:

Dyspnea on exertion (DOE)

Fatigue

Abdominal distension due to ascites

Hepatomegaly and signs of fluid overload

Jugular venous distension

Peripheral edema

Pleural effusions may also be present

Red-flag features include unexplained weight loss, signs of hepatic congestion, and acute exacerbations mimicking acute pericarditis. These presentations necessitate a thorough diagnostic evaluation to confirm the diagnosis and rule out other causes of constrictive pericarditis 1 4.

Diagnosis

The diagnosis of chronic constrictive pericarditis involves a combination of clinical evaluation, imaging, and hemodynamic studies. Key diagnostic criteria and tests include:

Clinical history and physical examination: Focus on symptoms of right-sided heart failure and signs of fluid overload.

Echocardiography: Reveals characteristic features such as diastolic flattening of the interventricular septum and right ventricular dilatation.

Echocardiographic findings:

- Kussmaul's sign: Inverted jugular venous pulse during inspiration - Pericardial thickening visible on imaging

Hemodynamic studies:

- Swan-Ganz catheterization: Demonstrates a "dip-and-plateau" pattern in the pulmonary capillary wedge pressure tracing, indicative of diastolic dysfunction.

Cardiac MRI: Can provide detailed images of pericardial thickening and fibrosis.

Differential diagnosis:

- Restrictive cardiomyopathy: Often distinguished by absence of pericardial thickening on imaging. - Right ventricular dysfunction: Typically lacks the characteristic hemodynamic patterns seen in constrictive pericarditis. - Pericardial effusion: Absence of significant fluid accumulation helps differentiate from effusive pericarditis 1 4 11.

Management

First-Line Treatment

Medical Management:

- Nonsteroidal anti-inflammatory drugs (NSAIDs): For symptomatic relief in acute exacerbations. - Colchicine: Adjunctive therapy to reduce recurrence rates in idiopathic recurrent pericarditis 7 9. - Dose: 2 mg twice daily, titrated based on response and tolerability. - Duration: Typically 6-12 months for initial episodes, longer for recurrent cases. - Monitoring: Regular assessment of symptoms, renal function, and complete blood count.

Second-Line Treatment

Immunosuppressive Therapy:

- Corticosteroids: Considered in refractory cases or when an immune-mediated etiology is suspected. - Dose: Initial dose of prednisone 0.5-1 mg/kg/day, tapered based on response. - Monitoring: Regular monitoring of blood glucose, bone density, and infection risk.

Biologics:

- IL-1 inhibitors (e.g., anakinra): For refractory idiopathic recurrent pericarditis. - Dose: Anakinra 100 mg/day subcutaneously. - Monitoring: Regular assessment of inflammatory markers and adverse effects.

Definitive Treatment

Surgical Intervention:

- Pericardiectomy: Definitive treatment for medically refractory cases. - Approach: Median sternotomy is most common; left anterolateral thoracotomy in selected cases. - Complications: Early mortality rate ranges from 2-6%, with higher rates in female patients and those in NYHA class IV 1 11. - Postoperative Care: Close monitoring in ICU, echocardiography to confirm successful pericardiectomy, and management of potential complications such as arrhythmias or fluid overload.

Contraindications

Advanced age or significant comorbidities: May preclude surgical intervention.

Severe systemic illness: Requires stabilization before considering surgery.

Complications

Acute exacerbations: Recurrent pericarditis can mimic acute episodes, necessitating prompt medical intervention.

Right-sided heart failure: Progressive fluid retention and hepatic congestion.

Arrhythmias: Particularly atrial fibrillation due to atrial dilation.

Postoperative complications: Bleeding, infection, and cardiac tamponade.

When to refer: Persistent symptoms despite medical management, suspicion of refractory disease, or need for surgical intervention 1 4.

Prognosis & Follow-Up

The prognosis of chronic rheumatic pericarditis varies based on the extent of pericardial constriction and the timeliness of intervention. Early surgical correction often yields favorable outcomes, with significant improvement in functional capacity and quality of life. Prognostic indicators include preoperative NYHA class and the presence of comorbidities. Recommended follow-up includes:

Regular echocardiograms: To monitor pericardial thickness and cardiac function.

Clinical assessments: Every 3-6 months initially, then annually if stable.

Cardiac biomarkers: Periodic monitoring to detect early signs of recurrence or complications.

Special Populations

Pediatrics: Idiopathic pericarditis is common, with recurrences seen in up to 15-30% of cases. Treatment focuses on NSAIDs and colchicine, with close monitoring for growth and development.

Elderly: Higher risk of comorbidities complicates management; careful risk-benefit assessment for surgery is essential.

Comorbidities: Patients with significant comorbidities may require tailored medical management before considering surgical options.

Specific ethnic groups: No specific ethnic predispositions are widely reported, but regional infectious and environmental factors may influence incidence 10 11.

Key Recommendations

Early Diagnosis and Intervention: Prompt recognition and management of chronic constrictive pericarditis improve outcomes (Evidence: Strong 1 4).

Use of NSAIDs for Symptomatic Relief: Initiate NSAIDs for acute exacerbations to reduce inflammation and pain (Evidence: Moderate 3).

Colchicine for Recurrent Cases: Adjunct therapy with colchicine reduces recurrence rates in idiopathic recurrent pericarditis (Evidence: Moderate 7 9).

Consider Immunosuppressive Therapy in Refractory Cases: Corticosteroids or IL-1 inhibitors for refractory disease (Evidence: Moderate 8 9).

Pericardiectomy for Refractory Disease: Definitive surgical intervention for medically refractory cases (Evidence: Strong 1 11).

Close Postoperative Monitoring: Intensive care unit monitoring post-pericardiectomy to manage complications (Evidence: Expert opinion).

Regular Follow-Up: Periodic echocardiograms and clinical assessments to monitor cardiac function and detect recurrence (Evidence: Moderate 4).

Tailored Management in Special Populations: Consider age, comorbidities, and specific clinical contexts in treatment planning (Evidence: Expert opinion).

Avoid Surgery in High-Risk Patients: Evaluate surgical candidacy carefully, especially in elderly or severely comorbid patients (Evidence: Expert opinion).

Monitor for Recurrent Pericarditis: Regular clinical and biomarker monitoring to detect early signs of recurrence (Evidence: Moderate 6).

References

1 Biçer M, Özdemir B, Kan İ, Yüksel A, Tok M, Şenkaya I. Long-term outcomes of pericardiectomy for constrictive pericarditis. Journal of cardiothoracic surgery 2015. link 2 Aikawa H, Fujino M, Nakao K, Kanaoka K, Sumita Y, Miyamoto Y et al.. Nationwide Trends in Idiopathic Pericarditis Management and Outcomes in Japan　- A Nationwide JROAD-DPC Analysis. Circulation journal : official journal of the Japanese Circulation Society 2025. link 3 Principi N, Lazzara A, Paglialonga L, Viafora F, Aurelio C, Esposito S. Recurrent pericarditis and interleukin (IL)-1 inhibitors. International immunopharmacology 2024. link 4 Kumawat M, Lahiri TK, Agarwal D. Constrictive pericarditis: retrospective study of 109 patients. Asian cardiovascular & thoracic annals 2018. link 5 Brucato A, Emmi G, Cantarini L, Di Lenarda A, Gattorno M, Lopalco G et al.. Management of idiopathic recurrent pericarditis in adults and in children: a role for IL-1 receptor antagonism. Internal and emergency medicine 2018. link 6 Imazio M, Battaglia A, Gaido L, Gaita F. Recurrent pericarditis. La Revue de medecine interne 2017. link 7 Li YL, Qiao SB, Wang JY, Chen YM, Luo J, Zhang HF. Colchicine in addition to conventional therapy for pericarditis recurrence : An update meta-analysis. Herz 2016. link 8 Lazaros G, Imazio M, Brucato A, Vassilopoulos D, Vasileiou P, Gattorno M et al.. Anakinra: an emerging option for refractory idiopathic recurrent pericarditis: a systematic review of published evidence. Journal of cardiovascular medicine (Hagerstown, Md.) 2016. link 9 Imazio M. Idiopathic recurrent pericarditis as an immune-mediated disease: current insights into pathogenesis and emerging treatment options. Expert review of clinical immunology 2014. link 10 Gaspari S, Marsili M, Imazio M, Brucato A, Di Blasi Lo Cuccio C, Chiarelli F et al.. New insights in the pathogenesis and therapy of idiopathic recurrent pericarditis in children. Clinical and experimental rheumatology 2013. link 11 Tirilomis T, Unverdorben S, von der Emde J. Pericardectomy for chronic constrictive pericarditis: risks and outcome. European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 1994. link90020-5)

Chronic rheumatic pericarditis