Coronary Artery Bypass Grafting Clinical Trial
Official title:
The Effect of Remimazolam on Postoperative New-onset Atrial Fibrillation in Patients Undergoing Coronary Artery Bypass Grafting
Atrial fibrillation (AF) is the most common cardiac severe arrhythmia globally and is associated with an increased risk of mortality and morbidity, with a loss of 6.0 million disability-adjusted life-years worldwide in 2017, conferring 0.24% of total disability-adjusted life-years globally. Due to the absence of knowledge of AF pathogenesis, currently, available therapies do not prevent AF onset or progression in 85% of patients. Despite the identification of novel druggable targets that are involved in the pathogenesis of AF, the translation of these findings to clinical drug studies is limited. Postoperative atrial fibrillation (POAF) is the most common type of secondary AF. The incidence of POAF after coronary artery bypass grafting (CABG) is approximately 30%. About 16% of patients developed POAF in cardiac surgery even with the international guideline recommended perioperative beta-blocker intervention. Remimazolam is a newly approved benzodiazepine sedative indicated for the induction and maintenance of procedural sedation in adults, with significantly reduced sedation and recovery time. It was also found to be with an anti-inflammatory effect and therefore might have an impact on POAF since AF is closely related to the inflammatory response of myocardial tissue and inflammatory factors such as TNF-α. So, the RePAF trial intends to explore whether remimazolam application in induction and maintenance for general anesthesia during cardiac surgery can reduce the incidence of POAF in patients with CABG, and the effect on the postoperative plasma levels of inflammatory factors and stress factors.
Postoperative atrial fibrillation (POAF) presented a 30% incidence in cardiac surgery and 16% even under beta-blocker treatment, leading to serious complications. Inflammation is a key mechanism that promotes POAF. Remimazolam is a newly approved benzodiazepine sedative with anti-inflammatory effects. However, the impact of remimazolam on POAF remains unknown. To explore whether or not remimazolam can reduce the POAF in coronary artery bypass grafting (CABG) patients, a first open-phase trial in which 50 patients (randomized 1:1 to Remimazolam and control groups) will be enrolled as a pilot study to obtain parameters for sample size calculation. A double-blind randomized controlled trial will be then conducted to explore remimazolam's effect on POAF and inflammatory factors' blood levels in patients that receive selective CABG. The blood level of inflammatory factors, stress factors (epinephrine, norepinephrine, cortisol, adrenocorticotropic hormone, corticotropin-releasing hormone), myocardial injury markers, and hemodynamic parameters will also be assessed. This 2-phase clinical trial will provide novel evidence for the newly approved sedative drug, remimazolam, and with detailed data for inflammatory and myocardial injury endpoints. ;
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