“…When cerebral auto-regulation is disturbed, arterial hypertension can results into direct increase of Cerebral Blood Flow (CBF) that can lead to high intracranial pressure, cerebral edema and intracranial hemorrhage [1,3,5]. In patients undergone elective craniotomy, thigh monitoring of arterial pressure and thoughtful titration of anti hypertensive drugs -including short acting beta blockers or calcium channel blockers-can effectively blunt the postoperative sympathetic overdrive [4,5]. Infusion of nitrates-based drugs, including nitroglycerin and nitroprusside, should be avoided in these patients, because of the direct cerebral vasodilatation and intracranial hypertension [5].…”