TAVI Protocol - Paravertebral Block Study

"We are planning to replace the standard intravenous opioid analgesia with a continuous paravertebral block using local anesthetic after trans-apical aortic valve replacement.~Anesthesia management will be standardized to minimize any impact that anesthetic type may have on neurological outcomes.~Adjuvant supplemental analgesia will be provided to both groups according to the standardized institutional guidelines."