The purpose of this study is to determine whether there is a significant decrease in cerebral oxygen saturation in hypertensive patients undergoing major abdominal surgery and their correlation with standard monitoring parameters.
- Observation: Cohort
- Perspective: Prospective
- Sampling: Probability Sample
patients scheduled for major abdominal surgery such as gastrectomy, colon resection ,liver resection and duodenocephalo-pancreasectomy
|Type||Measure||Time Frame||Safety Issue|
|Primary||decreases in cerebral oxygen saturation (rSO2) during the surgery||every 5 minutes throughout the surgery||No|
|Secondary||Change from baseline in Mini-Mental State Exam (MMSE) perioperative period||Baseline, 4 day after surgery||No|