Acute Liver Failure, Acute Renal Failure, Acute Respiratory Distress Syndrome, Congestive Heart Failure, Endocrine Emergencies, Gastrointestinal Bleeding, Multiple System Organ Failure, Post-Operative Care of Surgical Patients, Respiratory Failure, Sepsis Syndrome and Septic Shock, Stroke and Other Neurologic Emergencies, Toxic Ingestions and Overdoses.