 1. Contraindications for TEE: Esophageal stricture, tracheoesophageal fistula, postesophageal surgery, esophageal trauma, esophagectomyesophagogastrectomy, barrett esophagus, hiatal hernia, large descending aortic aneurysm, unilateral vocal cord paralysis, esophageal varices, postradiation therapy, previous bariatric surgery, zenker diverticulum, colonic interposition, dysphagia 