Changes in Cerebral Oxygenation Related to Intraoperative Position Changes

Changes in Cerebral Oxygenation Related to Intraoperative Position Changes

This is a prospective, observational study. This study will assess the effect of temporary changes in body position (supine, head of bed elevated 30 degrees, head of bed elevated 60 degrees) in anesthetized patients. Tissue oxygenation will be assessed non-invasively using near infrared spectroscopy (NIRS) by a device that is used in our operating rooms and the ICU setting to assess cerebral and tissue oxygenation.

Inclusion Criteria:

• Patients 10-21 years of age undergoing posterior spinal fusion, requiring neurophysiologic monitoring and an arterial cannula

Exclusion Criteria:

• Patients in whom an arterial cannula is not indicated for the surgical procedure
• Patients with comorbid conditions that may impact cerebral blood flow, cerebral perfusion or place them at risk for cerebral hypoperfusion
• Patients in whom an invasive arterial cannula cannot be placed