Implantation depth measured by 64-slice computed tomography is associated with permanent pacemaker requirement following transcatheter aortic valve implantation with the Core Valve ® system

Abstract

Implantation depth of the Core Valve(®) into the LVOT was associated with post-procedural PM requirement. Thereby, a cut-off value of 6mm, as measured by 64-slice CT, proved useful to define patients at risk for PM requirement.

Conduction recovery and avoidance of permanent pacing after transcatheter aortic valve implantation

“…In our study, the most commonly used prosthesis types were associated with a decreasing PM implantation rate over the years of experience. Although current studies reported that PM implantation after TAVI depends on the implantation depth of the prosthesis [18,21,22], varying implantation depth in order to decrease conduction disturbances after TAVI has not been pursued at our heart center. Furthermore, we did not change implantation strategy but evaluated the measurement of the anulus by computer tomography instead of early rotational angiography in addition to transesophageal echocardiography which is more precise to define optimal size of the prosthesis.…”

Cartilaginous Intrusion of the Atrioventricular Node in a Quarter Horse with a High Burden of Second-Degree AV Block and Collapse: A Case Report

“…In people where the AV nodal conduction tract is damaged or mechanically affected by aortic valve surgery, pacemaker implantation may be needed [ 32 , 33 , 34 ]. The implantation of a permanent pacemaker for therapeutic purposes in various brady-arrhythmias is now also an option in horses and could potentially have been applied in this case as well [ 35 , 36 ].…”

Comparative analysis of balloon- versus mechanically-expandable transcatheter heart valves considering landing zone calcification

“…The high risk of AV node or left bundle branch alteration with the Lotus valve is most likely caused by its high radial force in combination with a deep initial valve deployment in the LVOT, according to instruction for use. Since the implantation depth appears to be an important risk factor for PPI also with other nitinol-framed THVs [29], iterations of the next generation Lotus delivery systemincluding the depth guard to prevent deep initial expansionmight improve this limitation.…”