Transesophageal Ultrasound in Perioperative Hemodynamic Analysis of Off-Pump Coronary Artery Bypass Grafting

Abstract

Transesophageal echocardiography (TEE) can directly, real-time, and visually monitor cardiac structure, function, and volume status, and effectively guide perioperative volumetric therapy and vasoactive drug use in critically ill patients to improve rehabilitation treatment and prognosis. Therefore, TEE is considered to be the most comprehensive monitoring technology. The characteristics of reliability, continuity, and repeatability of TEE-guided perioperative hemodynamic management make it have obvious advantages in clinical application, and have gradually developed into a technology that anesthesiologists must master. In this article, we carried out the application of transesophageal echocardiography in perioperative hemodynamic management, with a view to providing clinical research evidence for further promoting the clinical application of TEE and optimizing the quality of perioperative hemodynamic management in critical patients. The experimental results show that before and after cardiopulmonary bypass, there is a decrease after cardiopulmonary bypass, but it is not reflected in invasive pressure monitoring. It is considered that the volume change is small, and it has not yet caused the pressure change. In other words, the pressure is estimated to some extent. The load state sensitivity is poor and can not really reflect the change of the front load. Compared to the large number of applications to assess systolic function, there are few studies using estimated left ventricular diastolic function. In addition to the complexity of the diastolic process itself, the area curve is susceptible to clutter interference, and the poor readability of the time differential curve is directly related.