Effect of valvular annulus to left ventricular outflow tract ellipticity ratio and valvular annulus centrifugal index on perioperative prognosis of AVS patients undergoing TAVR
Objective To analyze the effect of aortic root factors(valvular annulus to left ventricular outflow tract(LVOT)ellipticity ratio,valvular centrifugation index)on perioperative prognosis of aortic valve stenosis(AVS)patients undergoing transcatheter aortic valve replacement(TAVR).Methods Retrospective analysis was performed on AVS patients who underwent TAVR(110 cases)in The First Affiliated Hospital of Xinjiang Medical University from January 2016 to May 2022.According to the relationship between the flap ring centrifugation index and flap ring morphology,the patients were assigned into a group with a centrifugation index<0.1(n=65)and a group with a centrifugation index≥0.1(n=45).Meahwhile,patients were assigned into valvular annulus to LVOT ellipticity ratio>1 group(n=43)and≤1 group(n=67)according to the similarity of valvular annulus to LVOT morphology.The effects of valvular centrifu-gation index and valvular annulus to LVOT ellipticity ratio on perioperative prognosis were compared.Results Significant differences were found in perioperative rates of moderate/severe perivalvular leakage(15.4%vs.46.7%,P<0.001)(before post-balloon expansion)and new block(32.3%vs.53.3%,P<0.05)in AVS patients with different valvular centrifugation indices,and the perioperative rate of new block in AVS patients with different valvular annulus to LVOT ellipticity ratio(53.5%vs.32.8%,P<0.05).Conclusion The inci-dence of perioperative block was higher in TAVR patients with valvular annulus to LVOT ellipticity ratio>1,and the incidences of peri-operative block and moderate/severe perivalvular leakage were lower in TAVR patients with valvular centrifugation index<0.1.
Aortic valve stenosisTranscatheter aortic valve replacementPerioperative prognosisEllipticity ratioCentrifugal index
万方数据
维普
