Acute renal failure - Reversible Determining prognosis- kidneys respond to diuretic with good output; this indicates that kidneys are functioning well Acute Pyelonephritis - Diagnosing by clinical symptoms alone can be difficult; can be similar to cystitis Diagnosis established by: -Urine culture -Urinalysis (WBC casts indicates pyelonephritis, but may not always be present) -Signs/Symptoms -Complicated pyelonephritis requires blood cultures and urinary tract imaging Renal Calculi ...