3.4 Consent & Advance Directives

Consent Is Autonomy Made Operational

Every clinical touch that is more than a trivial social contact rests on consent. Without it, well-intended care can become battery (unwanted touching) or an ethics violation. For CMAC Domain 2 tasks 2.05–2.06, you must know types of consent, what “informed” means, the MA’s role versus the provider’s role, and how advance directives guide care when patients lose decision-making capacity.

Elements of Informed Consent

Informed consent is more than a signature. It is a process. Classic elements:

1. Capacity (competence in everyday clinical language) — the patient can understand information, appreciate consequences, and communicate a choice. Capacity can be decision-specific and can fluctuate (pain, sedation, dementia, age).
2. Disclosure — explanation of the nature of the procedure, expected benefits, material risks, alternatives (including no treatment), and likely outcomes in language the patient can use.
3. Voluntariness — free of coercion, manipulation, or improper pressure.
4. Authorization — the patient agrees; documentation captures that agreement when required.

Who Provides the Informed Consent Discussion?

The licensed provider who orders or performs the procedure is responsible for the risks-benefits-alternatives conversation. The medical assistant supports the process but does not replace the provider’s disclosure for invasive or high-risk procedures.

Exam trap: An option where the MA “fully explains all risks of surgery so the doctor does not have to” is wrong. An option where the MA notices the patient still has questions and brings the provider back is right.

Express vs. Implied Consent

When Implied Consent Is—and Is Not—Enough

• Usually enough: routine vitals, many noninvasive measurements, standard phlebotomy when the patient presents and cooperates under an ordered visit (facility policies still apply; some sites still use written general consents).
• Not enough alone: surgeries, biopsies, many invasive procedures, HIV testing in some jurisdictions, research participation, photography for marketing, release of records beyond TPO, and anything the patient verbally refuses.
• Emergencies: if the patient is unresponsive and no decision-maker is available, teams treat under implied consent to preserve life/limb, then document thoroughly. This does not authorize elective procedures.

Minors, Surrogates, and Special Situations

• Minors: parents/legal guardians generally consent; exceptions (state-specific) may include emancipated minors and certain sensitive services (sexual/reproductive health, mental health, substance treatment). Do not invent exceptions—follow policy and escalate.
• Adults lacking capacity: use the legally recognized surrogate (healthcare agent under durable power of attorney, court-appointed guardian, or state surrogate hierarchy).
• Language barriers: use qualified interpreter services per policy; a rushed English-only consent with a non-English speaker is not informed consent.
• Hearing/vision limits: adapt communication; confirm understanding with teach-back when appropriate.
• Coercion flags: family members answering for a silent adult, threats to abandon the patient, or “just sign so we can go” pressure—pause and involve the provider/supervisor.

Documentation Standards

Good consent documentation typically includes:

• Procedure name and site (when applicable).
• Date/time and signatures (patient/surrogate, provider, witness as required).
• Notation that questions were addressed.
• For refusal: what was refused, that risks of refusal were discussed by the appropriate clinician, and the patient’s stated reasons if offered.
• Use of interpreter (name/ID of service).

Never backdate consent. Never have a family member “sign for” a capacitated adult without legal authority. Never apply a signature stamp for the patient.

Advance Directives: Planning Before Crisis

An advance directive is a legal document (or set of documents) completed while a person has capacity, stating preferences for future medical care and/or naming a decision-maker for times of incapacity. Federal Patient Self-Determination Act (PSDA) principles require many healthcare institutions to inform adult patients about their rights to formulate advance directives—MAs often participate in asking whether one exists and scanning documents into the record, not in giving legal advice.

Living Will

A living will states the treatments a person wants or does not want in specific future conditions (for example, permanent unconsciousness or terminal illness)—often addressing ventilators, artificial nutrition/hydration, dialysis, and resuscitation preferences. It speaks when the patient cannot.

Durable Power of Attorney for Healthcare (Healthcare Proxy / Agent)

A durable power of attorney for healthcare (names vary by state: healthcare proxy, medical power of attorney) appoints an agent to make healthcare decisions when the patient lacks capacity. “Durable” means it continues despite incapacity. This is not the same as a financial power of attorney—do not release money or property under a healthcare proxy alone.

Limits of Advance Directives

• They do not authorize illegal acts.
• They may not cover every scenario—providers interpret in context.
• If documents conflict or family disputes the agent’s authority, escalate—MAs do not adjudicate legal fights in the hallway.
• Out-of-state forms may need review under local policy.

POLST/MOLST and DNR: Orders, Not Just Wishes

Candidates often confuse advance directives with portable medical orders.

MA-Level Rules for Code Status

1. Know how your facility flags DNR/POLST in the EHR and on paper forms during procedures.
2. Verify you have the current order—old copies can mislead.
3. Inform the provider if a patient brings a new POLST or revokes wishes.
4. Do not ignore a valid DNR because “the family looks upset”—follow policy and escalate conflicts.
5. Do not invent a DNR because the patient is elderly or “looks terminal.”
6. In outpatient settings, emergency response still follows clinic policy (call EMS, BLS until status is clarified with authorized orders).

POLST does not replace a will for property and does not appoint a financial guardian. It is about medical interventions.

Witnessing and Obtaining Signatures: Practical Workflow

A common ambulatory workflow the exam expects you to understand:

1. Provider discusses procedure, risks, benefits, alternatives.
2. Patient verbalizes understanding and agreement (or refusal).
3. MA confirms correct form, patient identity, date.
4. Patient signs; MA witnesses if policy requires (witness attests identity/signature, not that the patient understood every medical risk).
5. Provider signs/authenticates as required.
6. Copy to chart; patient may receive a copy.
7. If the patient hesitates, stop and return to the provider—never “just get the signature so we stay on schedule.”

Witness vs. Notary

Most clinic consents need a witness, not a notary. Some advance directives or state forms may have notarization or extra witness rules—follow the form instructions and facility policy; do not freestyle.

Refusal of Care

Competent adults may refuse recommended interventions. MA response:

1. Stop the procedure.
2. Notify the provider promptly.
3. Avoid arguing, threatening, or withholding unrelated care as punishment.
4. Document objectively: “Patient declined influenza vaccine after provider counseling; states ‘I don’t want it today.’”
5. Support any required refusal form.

Refusal of one service is not refusal of all care—continue other ordered, accepted services.

Integrating Consent With Scope, HIPAA, and Ethics

• Scope: You may not consent a patient to something you cannot perform, and you may not expand your role under the banner of “they signed a general consent.”
• HIPAA: Discussing the patient’s condition while obtaining consent must occur in a reasonably private setting.
• Ethics: Autonomy (consent/refusal) balances with beneficence; when conflicted, use the provider and ethics resources rather than coercion.

High-Yield Scenario Patterns

Master the verbs: verify, witness, document, escalate, honor refusal. Avoid the verbs: coerce, backdate, invent authority, replace the provider’s disclosure.