6.16
Instructions for Use & Clinical Reference Manual (US)
Additional hemodynamic and other clinical data was provided from both an FDA approved
prospective randomized study (PROTECT II) and real-world use data to further corroborate the
hemodynamic benefits afforded by use of the Impella devices.
LITERATURE REVIEW
The literature review provided has three components. The first component is a review and
characterization of the use of Impella to treat AMICS patients. The second component is a
comparison of the results of the Impella literature review to a literature review of Abiomed’s
PMA approved surgical VADs (the BVS and AB5000) in AMICS. The third component is a
literature review of the use of ECMO in this population, since ECMO is used as an alternative
device to support these patients as well, albeit off-label.
The Impella review encompassed a large body of scientific evidence with over 315 publications
available for review. The filtering of these publications resulted in over 692 patients in 17
publications for the relevant use of Impella devices, which included 469 patients in 9 publications
treated for this specific proposed indication for use. The literature review provides further insight
into the use of the Impella devices in routine clinical practice.
The literature analysis shows that AMICS patients, who are deemed to require emergent
hemodynamic support, are, in general, older and present with high-risk comorbidities, poor
functional status and greatly depressed cardiac function. Overall, the use of Impella devices to
support AMICS patients appears to be safe and effective, based on the studies published in the
literature. The survival rates and morbidities also appear to be favorable for use of the Impella
devices as compared to the surgical VADs.
The review of ECMO in these same patients yielded a mean survival to either discharge of 30
days at 43% (range 29% to 59%) representing 6 studies and over 265 patients. The results of
the ECMO review indicate that the use of ECMO, which is a much more invasive system, yielded
a higher morbidity profile during support than use of the less invasive Impella devices for a
potential comparable or less favorable survival outcome.
Overall, the literature analysis provides further reasonable assurance of safety and effectiveness
of the Impella devices in the proposed indications for use.
Summary of Contents for Impella 2.5
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