Analysis Of Characteristics Of Aortic Root Imaging And Clinical Comorbidities In 77 Patients Undergoing Ductal Aortic Valve Implantation - Single Center Experience

Objective:To study the imaging of aortic root anatomy characteristic and clinic comorbidity of patients for Transcatheter aortic valve implantation (TAVI).Methods:We studied 77 patients evaluated for TAVI in our hospital from September 2012 to January 2015, used X-ray computer tomography (CT) scan and transthoracic echo to collect aortic root anatomy data, and summary the characteristic of clinic comorbidityResults:77 patients with mean age of 76(73～79)years old,58% are male. Of all the 77 patients 52% combined hypertension,21% combined diabetes,17% combined chronic lung disease,19% combined cerebrovascular disease,21% combined atrial flutteror atrial fibrillation, and 5% combined choric renal insufficiency. Transthoracic echocadiographic measurement of aortic mean gradient is 53 (45-68) mmHg, left ventricular ejection fraction (EF) is 57(41～63)%. The age of patients and incidence of clinic comorbidity is lower than American single center results, but the gradient is higher and EF is lower. CT measurement results in 77 cases,45 cases are tricuspid accounted for 58%,32 cases are bicuspid accounted for 42%, with raphe style in 13 cases, non-raphe style in 19 cases. The incidence of the bicuspid is significantly higher than the previous research results, the annulus to left coronary distance is higher in bicuspid patients. CT measurement of aortic annulus average diameter greater than the inner diameter of ultrasound.Conclusion:The incidence of clinic comorbidity is not very high in the patients evaluated for TAVI in our center, but the gradient is much higher with a poor heart function. There is a very high frequency of bicuspid valve patients and has different in anatomy characteristic of aortic root with tricuspid patients. The result of CT and ultrasound measurement of aortic annulus has significant difference.