The Constricted Heart: A 31-Year-Old Man with a Case of Constrictive Tuberculous Pericarditis.

BACKGROUND Constrictive pericarditis occurs due to chronic pericardial inflammation and adherence of the cardiac pericardial layer. Etiologies include toxins, infection, cardiac surgery, and idiopathic causes. Outside the United States, the most common cause of constrictive pericarditis is tuberculosis (TB). Constrictive pericarditis is the most severe complication of tuberculous pericardial disease. CASE REPORT A 31-year-old man who recently immigrated to the United States presented with a 2-week history of constitutional symptoms, dyspnea, and pleuritic chest pain. Physical examination was pertinent for bilateral lower extremity pitting edema, decreased bilateral breath sounds, and jugular venous distension. Transthoracic echocardiogram revealed a left ventricular ejection fraction of 45%, pericardial thickening, and an exaggerated septal bounce. Right heart catheterization showed discordant and concordant right ventricular pressure tracings. Cardiac magnetic resonance imaging revealed bilateral pleural effusions and circumferential pericardial thickening. Thoracocentesis was significant for an exudative effusion, with elevated adenosine deaminase levels. Subsequent QuantiFERON-TB Gold testing was positive, and he underwent elective pericardiectomy. Pericardial histopathology revealed necrotizing caseating granulomas. He was discharged on a 6-month course of rifampicin, isoniazid, pyrazinamide, and ethambutol therapy, with close multidisciplinary care team outpatient follow-up. CONCLUSIONS This case highlights the importance of a high index of clinical suspicion for tuberculous pericarditis in patients presenting with constitutional and heart failure symptoms and a relevant travel history, to ensure prompt diagnosis and treatment. This case also reflects the importance of coordination of care between cardiology, infectious disease, pathology, and cardiothoracic surgery teams in the management of tuberculous constrictive pericarditis.