Renal replacement therapy in the critical care unit.

Acute renal failure is common in critically ill patients. Many intensive care unit patients require renal replacement therapy (RRT). Hemodialysis can be performed as intermittent treatments or as continuous RRT, which can be customized to clinical goals by the use of carefully designed replacement fluids and hemodialysates.

Assigning patients with heart failure to observation status: B-type natriuretic peptide, ejection fraction, or physician judgment.

It is of clinical and financial importance to identify those heart failure patients who are likely to improve rapidly. The authors evaluated, as predictors of short-term resolution, three clinical variables often used to predict long-term outcome. Consenting patients admitted to the emergency department with dyspnea were examined daily until resolution (symptom reversion to baseline absent worsening clinical signs or x-ray).