The main objectives of this observational study are:
1. Provide reliable data on the prevalence of pericardial diseases, pericardial effusion, constrictive pericarditis and its predisposing factors among ESRD patients, undergoing long-term dialysis. 2. Detect the predisposing factors that could contribute to pericardial effusion amount and severity.
Participants (or their designated contact persons) will be contacted over the phone for either a telephone interview or a follow-up visit in the outpatient clinics, whatever feasible and possible.
Patients with ESRD with a GFR <10 cc/min are admitted to the internal medicine department nephrology unit or undergoing regular hemodialysis.
Patients presented with non-uremic pericarditis such as intra-thoracic malignancy, injury (thoracic, oesophageal, and iatrogenic trauma), pulmonary TB, autoimmune diseases, history suggestive of recent viral infection, myxedema, and severe HF.