EXHIBIT 23.1

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

     We consent to the reference to our firm under the caption "Experts" in the
Registration Statement (Form S-3) and related Prospectus of Cardima, Inc. for
the registration of 18,795,092 shares of its common stock and to the
incorporation by reference therein of our report dated January 31, 2001, with
respect to the financial statements of Cardima, Inc. included in its Annual
Report (Form 10-K) for the year ended December 31, 2000, filed with the
Securities and Exchange Commission.


                                    /s/ ERNST & YOUNG LLP

     Palo Alto, California

     July 3, 2001