Introductions and proceedings of imaging in preoperative assessment of transcatheter aortic valve replacement
10.3760/cma.j.issn.1001-4497.2017.10.019
- VernacularTitle:TAVR术前评估的介绍与进展
- Author:
Hao ZHANG
1
;
Qingsheng LU
;
Zaiping JING
Author Information
1. 第二军医大学附属长海医院血管外科
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
2017;33(10):623-627
- CountryChina
- Language:Chinese
-
Abstract:
Objective If left untreated, aortic stenosis(AS)is associated with a dismal prognosis.Transcatheter aortic valve replacement(TAVR)is emerging as a viable treatment alternative for these patients,with multiple co-morbidities and an-ticipated increased surgical risk, excluded from surgical intervention.Transcatheter valvular heart procedures are characterized by lack of exposure and visualization of the operative field, therefore relying on image guidance, both for patient selection and preparation and the implantation procedure itself.Temporal imaging methods used for preoperative assessment of TAVR include transthoracic echocardiography(TTE), transesophageal echocardiography(TEE), multi-detector row computed tomography (MDCT).However,these methods are associated with some limitations.Recent advances explored the utility of 4-dimensional CT angiogram and 3D print for accurate assessment before TAVR,which can replicate both the anatomic and functional proper-ties of severe degenerative aortic valve stenosis.
