Expanding Role for Transcatheter Aortic Valve Replacement: Successful Transfemoral Implantation of a Medtronic CoreValve for Severe Aortic Regurgitation

Transcatheter Aortic Valve Implantation (TAVI) for Native Aortic Valve Regurgitation - A Systematic Review

BACKGROUND

Transcatheter aortic valve implantation (TAVI) has become the standard of care for management of high-risk patients with aortic stenosis. Limited data is available regarding the performance of TAVI in patients with native aortic valve regurgitation (NAVR).Methods and Results:We performed a systematic review from 2002 to 2016. The primary outcome was device success as per VARC-2 criteria. Secondary endpoints included procedural complications, and 30-day and 1-year mortality rates. A total of 175 patients were included from 31 studies. Device success was reported in 86.3% of patients - with device failure driven by moderate aortic regurgitation (AR ≥3+) and/or need for a second device. Procedural complications were rare, with no procedural deaths, myocardial infarctions or annular ruptures reported. Procedural safety was acceptable with a low 30-day incidence of stroke (1.5%). The 30-day and 1-year overall mortality rates were 9.6% and 20.0% (cardiovascular death, 3.8% and 10.1%, respectively). Patients receiving 2nd-generation valves demonstrated similar safety profiles with greater device success compared with 1st-generation valves (96.2% vs. 78.4%). This was driven by the higher incidence of second-valve implantation (23.4% vs. 1.7%) and significant paravalvular leak (8.3% vs. 0.0%).

CONCLUSIONS

TAVI demonstrates acceptable safety and efficacy in high-risk patients with severe NAVR. Second-generation valves may afford a similar safety profile with improved device success. Dedicated studies are needed to definitively establish the efficacy of TAVI in this population.

Transcatheter aortic valve replacement for native aortic valve regurgitation as a bridge to liver transplantation

Coexistence of end-stage liver disease (ESLD) and severe valvular heart disease conveyed substantial risk for patients, oftentimes leading to exclusion from liver transplantation candidacy due to inability to safely offer cardiac surgery prior to transplantation. Several approaches have been described, including performing transplantation and valve surgery concurrently, or in sequence. Both options, however, have associated complications: catastrophic repercussion of peri-operative coagulopathy and organ dysfunction post-transplantation, respectively. The introduction of transcatheter procedures offered a safer alternative for high-risk patients; however, its recognized indications remained limited. A novel approach to this surgical dilemma by performing transcatheter aortic valve replacement (TAVR) for severe native aortic valve regurgitation in a patient on the liver transplant list has been presented. The procedure proved to be an effective management for the aortic valve insufficiency, improving our patient's hemodynamics in preparation for the subsequent orthotopic liver transplantation (OLT). © 2015 Wiley Periodicals, Inc.

Improved quality of life two-years post Transcatheter Aortic Valve Replacement for a regurgitant aortic homograft

The limited durability of prosthetic cardiac valves together with an aging population will present ongoing management challenges. This paper describes the case of an 82 year-old male with symptomatic severe regurgitation in an aortic homograft which remains successfully treated with Transcatheter Aortic Valve Replacement (TAVR) at two-year follow-up.

"Valve in valve" implantation of two self-expandable transcatheter aortic valves in a patient with aortic root aneurysm and massive aortic regurgitation: "a new TAVI option"

Catheter-based treatment of aortic regurgitation (AR) often proves challenging especially due to associated anatomical difficulties. Here, we present a case of CoreValve implantation with a novel use of the valve-in-valve technique to effectively treat severe AR in a patient with repeated cardiac surgery and aneurismatic prosthetic ascending aorta.