P-25 IMPEDANCE CARDIOGRAPHY AND SPLEEN STIFFNESS MEASUREMENT TO ASSESS THERAPEUTIC RESPONSE IN CIRRHOTIC PATIENTS TREATED WITH NON-CARDIOSELECTIVE BETA-BLOCKERS Martín Elizondo Barceló; Andreína Tesis Montes; Marcelo Valverde Gómez; Ricardo Armentano Feijoo; Solange Gerona Sangiovanni;