144A.4  Revocation of declaration.
  1.  A declaration may be revoked at any time and in any manner by which the declarant is able to communicate the declarant’s intent to revoke, without regard to mental or physical condition. A revocation is only effective as to the attending physician upon communication to such physician by the declarant or by another to whom the revocation was communicated.
  2.  The attending physician shall make the revocation a part of the declarant’s medical record.
85 Acts, ch 3, §5