Oregon Revised Statutes Public Health and Safety § 436.295

(a) If the court determines that the respondent has the ability to give informed consent to sterilization, the court shall issue an order so stating and permitting the sterilization to be performed. Prior to the performance of the sterilization, the physician, physician assistant or nurse practitioner and hospital involved shall obtain the written informed consent of the person for sterilization.

(b) If the respondent refuses to consent to sterilization, the court shall issue an order so stating and forbidding sterilization of the respondent, unless the respondent later makes a different choice and only after a rehearing under this section.