Prevention or Treatment of Arterial Hypotension and Oxygen Cerebral Saturation During Major Abdominal Surgery

Arterial Hypotension and Regional Cerebral Oxygen Saturation During Major Abdominal Surgery. A Randomized Controlled Trial

In this study investigators will explore the association between intraoperative arterial hypotension and cerebral oxygen saturation in patients scheduled for major abdominal surgery. Investigators will assign patients to control or interventional group. In this last group arterial hypotension will be avoided based on a HPI (Hypotension Predictive Index) protocol. In the control group arterial hypotension will be promptly treated according to hemodynamic variables.

Inclusion Criteria:

• patients scheduled for abominal surgery

Exclusion Criteria:

• Emergency surgery
• end-stage renal disease
• pregnancy
• obesity
• atrial fibrillation
• previous cerebral ischaemia
• central nervous system disorders