Study of How General Anesthesia, Ventilation, and Imaging Method Affect Aortic Regurgitation Severity Assessment in Adults Undergoing Cardiac Surgery

What this Trial Is About

This research aims to evaluate how different imaging methods and anesthesia affect the assessment of aortic regurgitation severity. It focuses on patients with known aortic regurgitation who are scheduled for cardiac surgery requiring trans-esophageal echocardiography TEE. The study compares the grading of aortic insufficiency between transthoracic echocardiography TTE before anesthesia and TEE after anesthesia induction. Participants will have a TTE performed immediately before general anesthesia induction, followed by a TEE after anesthesia begins and positive pressure ventilation is applied. The study observes changes in the severity grading of aortic regurgitation between these two imaging techniques and conditions during surgery. During the study, researchers will assess the agreement between the aortic regurgitation grades from the pre-operative TTE and intra-operative TEE, as well as between the pre-operative TTE and a repeated TTE immediately after anesthesia induction. The study involves routine imaging assessments around the time of surgery, and participants will be monitored from enrollment through these imaging procedures.

Impact of Anesthesia, Positive Pressure Ventilation and Modality of Imaging on the Echocardiographic Assessment of the Severity of Aortic Regurgitation