Neuromonitoring During Rapid Ventricular Pacing in Patients Undergoing Cerebral Aneurysm Surgery

Safety of Rapid Ventricular Pacing During Cerebral Aneurysm Surgery by Multimodal Neuromonitoring

To evaluate the effect of rapid ventricular pacing on the oxygenation of the brain in patients scheduled for cerebral aneurysm clipping surgery or arteriovenous malformation surgery.

Patients scheduled for cerebral aneurysm clipping surgery or arteriovenous malformation surgery(ASA 1to 3 over 18years) receive standard care general anesthesia including central venous line for rapid ventricular pacing technique. A contralateral Foresight sensor is placed on the forehead of the patient at induction. After the craniotomy two micro electrodes(PBtO2 and cerebral blood flow) are placed in the brain and fixated. A subdural strip electrode is placed on the surface of the brain to record the electrical activity. Effect of mild hyperventilation and oxygenation with 100% O2 is evaluated.

Inclusion Criteria:

• scheduled for cerebral aneurysm surgery or arterial venous malformation
• American Society of Anesthesiologists classification 1, 2, or 3

Exclusion Criteria:

• non