Effect of Olmesartan and Nebivolol on Ambulatory Blood Pressure and Arterial Stiffness in Acute Stage of Ischemic Stroke

Inclusion Criteria: 1. Patients with a first diagnosis of an acute ischemic stroke (permanent or transient) 2. BP levels \>160/100mmHg at start of the third day of hospitalization 3. BP levels \>160/100mmHg and \<220/120mmHg at start of the fourth day of hospitalization Exclusion Criteria: 1. Patients with confirmed hemorrhagic stroke with computer tomography at hospital admission. 2. Patients with chronic atrial fibrillation or other cardiac arrhythmia. 3. Patients with BP levels \>220/120 mmHg during the hospitalization or patients with other hypertensive emergency situation (i.e. acute myocardial ischemia, aortic dissection, acute pulmonary edema, acute renal failure, hypertensive encephalopathy) which demands fast BP reduction with the use of intravenous antihypertensive drugs, according to current guidelines {Jauch, 2013 340 /id}. 4. Patients with specific indication for treatment with blockers of the renin-angiotensin-aldosterone system (RAAS) other than hypertension (i.e., congestive heart failure, acute myocardial ischemia). 5. Patients with specific indication for treatment with β-blockers other than hypertension (i.e., heart failure, tachyarrhythmia or angina pectoris). 6. Patients with specific contra-indications for RAAS blockers (hyperkalemia, history of angioedema) and patients with a history of allergic reaction or severe hypotension after olmesartan treatment. 7. Patients with specific contra-indications for β-blockers (heart rate \<60/min without a treatment with bradyarrhythmic drugs), chronic obstructive pulmonary disease or asthma and patients with history of allergic reaction after nebivolol treatment.