Assess cardiac function: ECG,
echocardiography, and, if necessary, radionuclide imaging. Evaluate renal
function: clinical (dialysis, volume restriction) and biochemistry (urea,
electrolytes, creatinine clearance). Assess vascular involvement and
document neurologic system involvement. Blood work should include hematocrit
and electrolyte levels. For patients with chronic renal failure, control of
hypertension should be optimized, as well as volume status, biochemical
abnormalities, and anemia.