Coronary Artery Bypass Surgery Clinical Trial
Official title:
The Association Between Transesophageal Echocardiography Monitoring and the Incidence of Postoperative Acute Kidney Injury in Coronary Artery Bypass Grafting:a Prospective Observational Study
TEE has a definite effect on the evaluation of cardiac structure and function in perioperative cardiac surgery. However, in CABG, previous studies on TEE mainly focused on whether to change the surgical plan rather than improve the clinical prognosis. There are few related studies on the evaluation of prognosis, and these studies have low efficacy and inconsistent conclusions. Acute kidney injury is the most common complication of CABG surgery and is independently associated with hospitalization and long-term mortality. In CABG patients, acute kidney injury, in addition to operation-related factors, is closely related to renal perfusion. These patients often exist serious coronary multivessel lesions and right heart dysfunction, which can cause the system obstacle of regurgitation of the inferior vena cava and kidney blood stasis, while the inappropriate rehydration fluid overload will affect kidney blood perfusion, which may be one of the reasons for the kidney injury. Therefore, appropriate volume status plays an important role in maintaining right heart function and renal perfusion. What indicators can the investigators use to effectively evaluate the patient's volume status and monitor the patient's right heart function? In recent years, ultrasound has been used as an effective tool to assess patient volume status , right heart function, and to guide patient fluid management. Many studies have confirmed that the respiratory variability of inferior vena cava diameter (ΔIVC) measured by TTE has a good correlation with the volume status of patients on mechanical ventilation, which has a high diagnostic value for predicting the fluid responsiveness and guiding fluid management.However, no study has been reported using TEE measurements of ΔIVC to assess volume status and guide fluid management in patients undergoing cardiac bypass surgery. Previous studies have confirmed that TAPSE measured by TTE is independently associated with AKI in ICU patients and can predict the occurrence of AKI in such patients. However, TAPSE monitored by TEE have not been reported in this regard. Can ΔIVC and TAPSE predict the incidence of AKI and major cardiovascular and cerebrovascular adverse events in CABG patients? Therefore, the investigators designed this observational study to further scientifically confirm the validity and guiding significance of ΔIVC and TAPSE in CABG, so as to protect and improve patients' renal function , reduce postoperative mortality and improve the clinical prognosis.
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