Indicated for patients with heart failure or resistant hypertension that is defined as: arterial-systolic pressure of 140mmhg or higher, and maximum treatment resistance tolerated with a diuretic and two other antihypertensive drugs. Heart failure is defined as functional III according to the cardiological association of New York and with left ventricular ejection fraction (LVEF) 35% despite treatment in the manner indicated by the guideline for adequate heart failure.