(a) The board may, without an election, issue revenue bonds or make other financial arrangements payable from and secured by a pledge of all or part of the revenue derived from the operation of the district's hospital system. The district may use the money to:
(1) purchase, construct, acquire, repair, renovate, or equip buildings or improvements for hospital purposes; or
(2) acquire sites to be used for hospital purposes.
(b) The bonds must be issued in the manner provided by Sections 264.042, 264.043, and 264.046-264.049, Health and Safety Code, for issuance of revenue bonds by a county hospital authority.