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There were 1.9% major strokes, no incidence of endocarditis, 1.5% myocardial infarction, 5.7% major
vascular complications, 11.3% disabling bleeding events, 3.0% cardiac intervention, and 4.5% new
pacemaker at 30 days.
NYHA went from 3.2 ± 0.61 at baseline to 1.9 ± 0.88 at 30 days. The mean change was -1.3 ± 1.10.
Device success was observed in 69.6% of patients (165/237). The mean hospitalization stay was
11.1 ± 8.96 days which included 4.5 ± 7.12 days in the ICU. The mean EOA was 0.7 ± 0.19 cm2at
baseline and 1.6 ± 0.43 cm2at 30 days, and the average mean gradient decreased from
41.2 ± 12.17 mmHg at baseline to 8.6 ± 3.59 mmHg at 30 days. The mean peak gradient decreased
from 73.2 ± 21.51 mmHg at baseline to 17.7 ± 7.30 mmHg at 30 days.
Results of SOURCE XT
A total of 2688 patients were enrolled. The vast majority of patients (96%) were treated with either the
transapical (TA) or transfemoral (TF) approach. Only a small proportion of patients were treated with
transaortic (TAo) or subclavian approaches. The implant approach was 62.7% for TF, 33.3% for TA,
3.76% for TAo and 0.3% for subclavian. The results only include the TF, TA and TAo approaches
(n = 2680).
Using K-M event rates at 30 days post implant for the TF, TA/TAo population, 6.2% of patients had
died, 3% due to a cardiac death, 3.6% of patients had suffered a stroke, and 6.6% had a major
vascular complication. Major/life threatening bleeding had occurred in 14.9% of patients, major
bleeding in 10.2%, and renal failure or AKI in 17.8%. Permanent pacemakers were implanted in 9.5%
of patients. Using K-M event rates at 1 year post implant for the TF, TA/TAo population, 19.5% of
patients had died, 9.5% of these from cardiac death, and 6.3% of patients had suffered a stroke.
Major/life-threatening bleeding had occurred in 17.3% of patients, major bleeding in 12%, major
vascular complications in 7.2%, renal failure or AKI in 20.5% and 11% of patients had a new
pacemaker implanted.
Of the 2688 patients that were enrolled, fifty-seven (57) of these patients had the SAPIEN XT valve
implanted into a failing surgical prosthesis. The TF approach was used in 23 patients, and the
TA/TAo approach was used in 34 patients. The implanted valve size was 23 mm in 38 patients
(66.7%), 26 mm in 14 patients (24.6%), and 29 mm in 5 patients (8.8%).
No deaths, no strokes, no major vascular complications, no life threatening bleedings, one (1) renal
failure, and no new permanent pacemakers were reported at 30 days post implant for the TF
population. At 1 year post implant, 3 deaths were reported for the TF population.
In the TA/TAo population, 3 deaths, 1 (major) stroke, 2 major vascular complications, 3 life
threatening bleedings, and 4 new permanent pacemakers were reported at 30 days. At 1 year post
implant, 4 additional deaths, 1 additional (minor) stroke, 1 additional major vascular complication, and
1 additional new permanent pacemaker were reported for the TA/TAo population.
The PARTNER II Cohort B Aortic Valve-in-Valve Registry (NR3/CANR3)
A clinical study was performed to establish a reasonable assurance of safety and effectiveness of
transcatheter aortic valve replacement with the Edwards SAPIEN XT valve in patients with a failing
surgical bioprosthetic aortic valve (i.e., “TAV-in-SAV”). The study was carried out as a single-arm
registry nested (i.e., the PARTNER II Trial), which was designated as “NR3.” NR3 was originally
approved for 100 patients and later expanded under a Continued Access Protocol (CAP). Data from
the original NR3 cohort and the NR3 CAP (CANR3) cohort were pooled at 30 days and 1 year data
was available for the NR3 cohort only.
Patients were treated at 40 investigational sites between June 12, 2012 and December 10, 2013. The
database for this PMA supplement reflected data collected through February 26, 2015 and included
199 patients (2 patients withdrew prior to treatment). By the last database extract performed on
February 26, 2015, all of these patients were included in the 30-day data analysis, and 97 patients
were included in the 1-year analysis.
The NR3 study was a single arm, prospective, observational, descriptive study without formal
hypothesis testing. The patients were limited to those who were deemed by a heart team to have a