The objective of the study was evaluate the effect of administration of midodrine and albumin on renal function in patients with cirrhosis and creatinine greater than 1,2mg/dl.

Twenty patients with cirrhosis and functional renal impairment, defined by a serum creatinine greater than 1,2mg/dl, will be included. Patients will receive daily midodrine at a dose of 10mg tid and 40g of albumin at 15-day interval. The follow-up period will be of 12 weeks. In all patients, liver and renal function, and vasoactive hormones (plasma renin activity, aldosterone, noradrenaline, ADH, endothelin and anf)will be determined at baseline conditions. At this moment, glomerular filtration rate and renal plasma flow determined by isotopic techniques as ambulatory blood pressure monitoring through a 24-hour period will be performed too. All these determinations will be repeated at 4 and 12 weeks. During the study period, just before the albumin infusions, blood will be drawn for creatinine and electrolytes determinations and these will be recorded as well physical examination performed.

Inclusion Criteria:

• Liver Cirrhosis
• Serum Creatinine greater than 1,2 mg/dL
• to have given written informed consent

Exclusion Criteria:

• pregnancy
• Systolic blood pressure above 150mmHg and/or diastolic blood pressure above 90mmHg
• Previous treatment with transjugular intrahepatic portosystemic shunt (TIPS) or surgical shunts
• Antibiotic treatment in the previous 7 days before inclusion, except for prophylaxis of spontaneous bacterial peritonitis
• infection by HIV
• contraindications for albumin and/or midodrine use