World Heart (WHRT) 8-K Other Events

EXHIBIT 99.2

Calculation of Public Float

			% of Outstanding Shares
Total shares outstanding as of February 13, 2009	13,253,964		100	%
SHARES OWNED BY AFFILIATES (1)
Shares owned by 5% Beneficial Owners:
Venrock Partners	(3,666,666	)	27.66	%
New Leaf Venture Management II, L.L.C.	(3,333,333	)	25.15	%
Austin W. Marxe and David M. Greenhouse	(3,008,021	)	22.70	%
Abiomed Inc.	(2,731,667	)	20.61	%
Shares owned outright by Directors and Officers: (2)
Jal S. Jassawalla	(2,009	)	0.02	%
Pratap Khanwilkar	(969	)	0.01	%
Phil Miller	(993	)	0.01	%
Piet Jansen	(1,020	)	0.01	%
David Pellone	(100	)	0.00	%
Total Publicly Held Shares by World Heart Inc. as of February 13, 2009	509,187

(1)	Includes shares owned by Officers, Directors and 5% Holders
	Excludes warrants and options exercisable within 60 days from February 13, 2009
(2)	Directors do not own shares of the Company.