2015年1月15日 · In the setting of native aortic valve stenosis, transcatheter aortic valve replacement (TAVR) is associated with a relatively low risk of coronary ostial obstruction, consistently <1%. 8, 9 Most commonly, the left main artery is involved, whereas obstruction of the right coronary is infrequent. 10 Similarly, acute hemodynamic collapse is common ...

2023年8月28日 · Preprocedural computed tomography (CT) workup with assessment of virtual transcatheter heart valve-to-coronary ostia (VTC) distance and transcatheter heart valve-to-sinus (VTS) distances is recommended to assess the risk of coronary obstruction following valve-in-valve (ViV) transcatheter aortic valve replacement (TAVR).

Coronary obstruction (CO) following transcatheter aortic valve replacement (TAVR) is a life-threatening complication, scarcely studied. The authors analyzed the incidence of CO after TAVR, presentation, management, and in-hospital and 1-year clinical outcomes in a large series of patients undergoing TAVR.

2022年3月14日 · Coronary artery obstruction is a rare but potentially devastating complication of transcatheter aortic valve replacement (TAVR). 1 It is caused by displacement of the diseased native or bioprosthetic aortic valve leaflet by the implanted transcatheter heart valve (THV) toward the coronary ostia and/or sinotubular junction (STJ) and is more commo...

2022年12月15日 · The Valve-in-Valve International Data (VIVID) registry proposed a simplified classification to assess the risk of coronary obstruction during valve-in-valve transcatheter aortic valve implantation (ViV-TAVI) based on preprocedural multi …

Coronary obstruction is a rare but life-threatening complication in patients undergoing transcatheter aortic valve replacement (TAVR). Aortic valve-in-valve (VIV) procedures to treat failed surgical bioprosthesis is associated with ~6-fold higher risk for coronary obstruction in certain situations.

2023年7月23日 · Objectives: The authors sought to investigate the agreement of predicted VTC and VTS distances and observed post-TAVR anatomy on CT and their relationship with transcatheter heart valve (THV) expansion and deployment conditions. Methods: Fifty-one patients who underwent a balloon-expandable ViV procedure were included in this study. The ...

Although data from the VIVID registry reveal that a virtual transcatheter heart valve to coronary ostium (VTC) distance of <4 mm is associated with high risk of coronary obstruction with high sensitivity and specificity (85% and 89%, respectively), the actual threshold that will put coronary flow at risk also depends on the bulkiness of the defl...

2022年12月15日 · Results: Among a total of 137 patients that underwent ViV-TAVI between August 2007 and June 2021, 109 pa-tients had stented, sutureless, or transcatheter degenerated bioprosthesis of which 96 (88%) had adequate MDCT data for risk assessment.

2019年7月8日 · Coronary artery obstruction is an uncommon but devastating complication of transcatheter aortic valve replacement (TAVR). Computed tomography appears to be a sensitive but nonspecific predictor of coronary artery obstruction.