14.4 Capacity & Informed Consent
Key Takeaways
Decision-making capacity is decision-specific and time-specific—not a global label based on age, dementia diagnosis, or disagreeable choices
Capacity assessment typically evaluates understanding, appreciation, reasoning, and expression of a choice
Informed consent requires information on nature, benefits, risks, and alternatives—including no treatment—plus voluntariness
Dementia or psychiatric illness may impair capacity for some decisions while preserving it for others; reassess when cognition fluctuates
Nurses verify understanding, advocate for interpreters and decision supports, and escalate when consent is coerced or capacity is unclear
Capacity & Informed Consent
Quick Answer: For GERO-BC III-A-6, separate capacity (clinical determination that a person can make a specific decision) from competence (legal status determined by a court). Informed consent requires disclosure of the intervention’s nature, benefits, risks, and alternatives; voluntary agreement; and a capacitated decision-maker (patient or lawful surrogate). Age, “poor choices,” or a dementia label alone do not equal incapacity.
Gerontological nurses constantly encounter consent moments: procedures, psychotropic starts, transfers, research, sexual expression in LTC, and care-plan goals. Getting capacity wrong either strips autonomy or exposes patients to unwanted risk.
Capacity vs. Competence
| Term | Who decides | Scope | Clinical pearl |
|---|---|---|---|
| Decision-making capacity | Clinician (often physician/APRN; nurses contribute assessment data) | Specific decision at a specific time | May be present for simple choices, absent for complex ones |
| Competence / incompetence | Court | Legal status, often broader | Guardianship/conservatorship follows legal process |
A person under guardianship may still retain capacity for some everyday choices depending on the court order. Conversely, a person without a guardian may lack capacity for a high-risk procedure today.
Elements of Decision-Making Capacity
Most frameworks assess whether the person can:
- Understand relevant information (condition, proposed action, options)
- Appreciate how that information applies to their situation
- Reason about options and consequences in a logical way (process matters more than the “popular” choice)
- Express a choice consistently enough to guide care
Practical bedside probes
| Element | Sample prompts |
|---|---|
| Understand | “Tell me in your own words what the doctor wants to do and why.” |
| Appreciate | “How could this surgery affect your breathing and recovery?” |
| Reason | “What makes option A better for you than option B?” |
| Choice | “What do you want us to do?” (re-ask later if delirium/waxing cognition) |
Sliding scale: The higher the risk/complexity (major surgery, amputation, leaving AMA with sepsis), the more rigorous the capacity evaluation should be. Low-risk decisions (choosing meal preferences) need less stringent proof.
What Capacity Is Not
| Myth | Reality |
|---|---|
| Old age = incapacity | Chronologic age alone never determines capacity |
| Dementia diagnosis = global incapacity | Many people with mild/moderate dementia decide some issues |
| Disagreeing with the team = incapacity | Unwise or unconventional choices can still be capacitated |
| Signed form = informed consent | Signature without understanding is inadequate |
| Family wants X = patient wants X | Always assess the patient first when possible |
| One failed MMSE item = incapacity | Cognitive screens inform risk but do not equal capacity determinations |
Delirium, intoxication, severe pain, hypoxia, and depression can temporarily impair capacity—treat reversible contributors and reassess.
Informed Consent Essentials
Valid informed consent generally includes:
- Disclosure: diagnosis/problem in understandable terms; proposed intervention; benefits; material risks; reasonable alternatives (including no intervention); expected recovery/burdens
- Capacity of the decision-maker
- Voluntariness: free of coercion, manipulation, or undue pressure (including subtle threats of abandonment)
- Authorization: affirmative agreement (written when required by policy/law)
Nursing roles in consent
Nurses often witness signatures and verify understanding, even when the physician/APRN obtains consent for procedures. High-yield actions:
- Use teach-back; pause for hearing/vision supports
- Obtain professional interpreters for limited-English-proficient patients—do not rely on minors or untrained family for consent conversations
- Flag coercion (“Sign or we’ll stop treating you”) to the provider/ethics team
- Ensure the consent matches the procedure scheduled
- Document questions asked, teaching provided, and who obtained consent
Emergency exception: When delay would cause serious harm/death and no capacitated patient/surrogate is available, clinicians may provide emergency treatment within the scope of presumed consent—then seek surrogates promptly.
Surrogates, Implied Consent, and Special Populations
When capacity is lacking:
- Use advance directives / named agent
- Follow state default surrogate hierarchy if no agent
- Seek emergency guardianship or ethics/legal pathways if no surrogate and decisions are non-emergent but necessary
Research consent requires extra safeguards; cognitively impaired elders need careful capacity evaluation and often LAR (legally authorized representative) permission plus assent when possible.
Long-term care sexual consent: Capacity for sexual activity is also decision-specific; facilities must balance privacy rights with protection from abuse—assessment is nuanced and interdisciplinary, not purely “dementia = no.”
Documentation That Protects Patients and Nurses
Strong notes include:
- The specific decision discussed
- Evidence for each capacity element (quotes help)
- Information disclosed and teach-back results
- Who participated (interpreter ID, agent name)
- Fluctuations (AM lucidity vs sundowning) and reassessment plans
- Notifications when capacity is lacking and who consented instead
Avoid pejorative labels (“confused,” “noncompliant”) without behavioral detail.
Integrating Capacity with Earlier Chapter Themes
- Advance directives (14.2): Complete them while capacity for planning remains; activate agents only after incapacity for the decision
- Ethics/advocacy (14.3): Defend capacitated refusals; support least-restrictive approaches when capacity is partial
- DEI (14.1): Literacy, language, trauma, and mistrust can look like “failure to understand”—address communication barriers before declaring incapacity
Exam Bottom Line
Choose answers that assess capacity for the decision at hand, maximize understanding supports, honor capacitated choices, and lawfully shift to surrogates only when capacity is absent—never because care is inconvenient or the patient is simply old.
Which statement about decision-making capacity is most accurate for GERO-BC practice?
Capacity is decision-specific and time-specific and may be retained for some choices despite cognitive impairment
A diagnosis of dementia automatically means the person lacks capacity for all health decisions
Any patient over age 85 should have a surrogate consent for procedures
Disagreeing with the recommended plan proves lack of capacity
An older adult can repeat the risks of amputation but insists the surgery is unnecessary because “my leg will grow back.” Which capacity element is most clearly impaired?
Expressing a choice only
Appreciation of how the information applies to their own situation
The legal competence decree
Voluntariness of the consent form signature
What is the nurse’s best action when a Spanish-speaking older adult’s adult child wants to interpret a high-risk procedure consent discussion?
Allow the child to interpret to preserve family involvement
Proceed in English if the patient nods politely
Arrange a qualified professional medical interpreter for the consent discussion
Skip detailed risks because translation takes too long
A patient with resolving delirium lacked capacity yesterday for a nonurgent elective procedure. Today cognition has improved. What should the team do?
Keep using yesterday’s surrogate indefinitely because delirium might return
Seek emergency guardianship before any further discussion
Cancel all future consent processes and treat under implied consent only
Reassess capacity now and obtain consent from the patient if capacity is regained
Sections you finish are checked off in the contents.