Monitored Anesthesia Care vs. General Anesthesia for Transcatheter Aortic Valve Replacement

Inclusion Criteria: * Adult patients ≥ 18 years old * Adult patients undergoing transfemoral approach TAVR for aortic valve stenosis * Adult patients who are medically eligible to receive both anesthetics (GA and MAC) Exclusion Criteria: * Inability to speak English * Body Mass Index (BMI) \> 37 kg/m2 * History of difficult airway requiring fiberoptic intubation * Inability to lie flat * Women who are pregnant * Patients who have contraindications to either anesthetic, such as an allergy or history of malignant hyperthermia, will also be excluded from the study. * Inability or unwillingness of subject to give informed consent based on any reason * Patients with any of the following absolute contraindications to TEE: * Perforated Viscus * Esophageal Stricture * Esophageal Tumor * Esophageal Perforation * Esophageal Diverticulum * Active upper GI Bleed