A 55-year-old man is complaining of general weakness, decreased fluid excretion, and an aching pain in his heart. For the last 15 years he has been suffering from chronic pyelonephritis and undergoing an inpatient treatment. His skin is dry and has a yellowish tinge. His pulse is 80/min., rhythmic, blood pressure – 100/70 mm Hg. Cardiac auscultation detects muffled heart sounds and a friction rub in the pericardium. Laboratory results: creatinine – 1.1 mmol/L, glomerular filtration – 5 mL/min. What treatment is indicated for this patient?