A 31-year-old previously fit and well Indian man was admitted with a two-week history of malaise and a 2-day history of hemoptysis. Admission blood tests revealed urea level of 20 mmol/Land creatinine level of 1100 mmol/L.
Bedside echocardiography revealed moderate global systolic dysfunction indicating probable uraemic cardiomyopathy.
A renal biopsy confirmed the diagnosis of glomerulonephritis. After his first three sessions of hemodialysis, echocardiography was repeated and revealed normal systolic function.
What type of CRS would you identify based on presented information?
What functional abnormality was the most important for your decision?