WorldHeart Appoints New Board Member

    Dr. Michael Sumner Estes joins the Board

    OAKLAND, CA, April 9 /CNW/ - World Heart Corporation (Nasdaq:   WHRT, TSX:
WHT), a developer of mechanical circulatory support systems, today announced
the appointment of Dr. Michael Sumner Estes to the Board of Directors.
    Dr. Estes has a unique breadth of experience in implantable,
cardiovascular devices such as heart valves, pacemakers and ventricular assist
devices (VADs). In large corporations as well as start-up ventures, he has a
more than 20-year history in developmental, operational, marketing and
strategic leadership. While at Baxter HealthCare, Dr. Estes was responsible
for the worldwide Cardiovascular Group that, at the time, had revenues of $500
million. Spanning roles from CEO to Chairman of the Board, he has also guided
the successful formation and financing of several high-technology start-up
    "We believe that Mike brings a wealth of experience directly related to
WorldHeart and is an excellent addition to our Board", said Jal S. Jassawalla,
WorldHeart's President and Chief Executive Officer. "His experience in
clinical evaluation, commercialization and market adoption of pacemakers and
heart valves will be invaluable as we move forward with our next-generation
    "I'm delighted to join the WorldHeart Board", said Dr. Estes. "There is a
significant clinical need in the treatment of heart failure, therefore it is
especially gratifying to see the assist-device field evolve to the
next-generation of life-saving technology. I believe that WorldHeart's
breakthrough Levacor(TM) Rotary VAD has real potential to be a leading product
in the VAD therapy market."

    About the Levacor VAD

    The Levacor VAD is a next-generation rotary VAD. It is the only
bearingless, fully magnetically levitated implantable centrifugal rotary pump
in clinical trials. An advanced, continuous-flow pump, the Levacor uses
magnetic levitation to fully suspend the spinning rotor, its only moving part,
inside a compact housing. The proprietary levitation technology employs a
unique arrangement of magnetics expected to provide optimal system simplicity
and reliability. In contrast to pumps with blood-immersed mechanical or
hydrodynamic bearings, full magnetic levitation eliminates wear within the
pump as well as dependence on blood properties for rotor suspension, and is
expected to provide improved blood compatibility by allowing greater
clearances around the rotor and more idealized flow patterns across a wider
range of operation. The Levacor VAD has been designed to address the needs of
current and future heart-failure patient populations with a high safety
profile and robust range of operation.

    About WorldHeart

    World Heart Corporation is a developer of mechanical circulatory support
systems with leading next-generation technologies, headquartered in Oakland,
California, with additional facilities in Salt Lake City, Utah and in Heesch,
Netherlands. WorldHeart's registered office is Ottawa, Ontario, Canada.

    Any forward-looking statements in this release are made pursuant to the
safe harbor provisions of the Private Securities Litigation Reform Act of 1995
and include statements relating to the Company's focus on the development of
its next-generation Levacor Rotary VAD and its potential, as well as other
statements that can be identified by the use of forward-looking language.
Investors are cautioned that all forward-looking statements involve risk and
uncertainties, including without limitation: need for significant additional
financing; risks in product development and market acceptance of and demand
for the Company's products; progress and timing, associated with clinical
trials, particularly its Levacor Rotary VAD product; slower Destination
Therapy adoption rate for VADs and other risks detailed in the Company's
filings with the United States Securities and Exchange Commission, including
its Annual Report on Form 10-KSB for the year ended December 31, 2006.

For further information:

For further information: Richard Juelis, +1-510-563-4713, or Peggy
Allman, +1-510-563-4721, both of World Heart Corporation; or Stephen Laird of
Genesis Select Corporation, +1-203-341-0214, for World Heart Corporation, Web

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