Diagnosis of Prerenal ARF
A complete physical examination and a medical history help the physician to diagnose prerenal ARF. In addition, laboratory studies often reveal a high BUN to Cr ratio (BUN:Cr > 20:1), along with abnormal urine chemistry. The physician often must rule out postrenal and intrinsic renal causes of acute renal failure.
Treatment for Prerenal ARF
The goal of treatment is to improve of kidney perfusion (blood circulation). This usually involves treating the underlying condition (e.g., infection, heart failure, liver failure). Intravenous (IV) fluids are administered to most patients to treat dehydration.
Prerenal ARF Prognosis
In general, patients with prerenal ARF improve dramatically with intravenous fluids. Urine output increases and renal function improves.