A Nevada Medical Power of Attorney form (MPOA) lets you give someone else the authority to make medical decisions for you. The person with the authority to make those decisions is your agent.
Laws
Statute: Nevada Revised Statutes Sections 162A.700 to 162A.860
Signing Requirements: Two (2) Witnesses or a Notary public (NRS 162A.790(2)).
Revocation: You should revoke it with another written document, namely a revocation of power of attorney. You can either use a notary public or two neutral adults as witnesses (NRS 162A.820).