Decision-Making and Dementia

By: Mathy Mezey, EdD, RN, FAAN Hartford Institute for Geriatric Nursing, New York University Rory Meyers College of Nursing

Issue Number D9, Revised 2016      

Editor-in-Chief: Sherry A. Greenberg, PhD, RN, GNP-BC, New York University Rory Meyers College of Nursing

WHY: Patients have the right to participate in decisions about their care, e.g., diagnostic and treatment interventions, diet, ambulation, daily care, and end-of-life care. Consent to (or refusal of) diagnostic and treatment interventions requires that the patient demonstrate their ability to consider the benefits, burdens and risks of the decision. Whether or not an individual has the capacity to understand, make a decision and take responsibility for the consequences of the decision is a clinical determination; it is not a question of legal competence. Persons with Mild Cognitive Impairment (MCI) and mild-to-moderate dementia can have the capacity to make some, but not all, decisions. They may be able to participate in decision making but impaired memory recall might preclude their ability to demonstrate that they understand the treatment options (Moye & Marson, 2007). Ethically, legally, and clinically it is always better to try to ascertain the patient’s authentic wishes, goals, values and preferences rather than to immediately default to a family member or other surrogate decision maker.

BEST PRACTICES: Patients whose cognitive status is unclear or fluctuates need protection from two types of mistakes: first, mistakenly preventing capacitated patients from directing the course of their healthcare; second, failing to protect incapacitated patients from the harmful effects of their decisions. There is no gold standard for capacity determination. A standardized mental status assessment [e.g. Eight-item Interview to Differentiate Aging and Dementia (AD8), Mini Cog, Montreal Cognitive Assessment (MoCA)] may be helpful in differentiating people with and lacking capacity for healthcare decision making (Karlawish et al., 2005). The patient’s ability to appreciate the consequences of a decision is a highly valued standard of decision making among healthcare professionals (Volicer & Ganzini, 2003).

TARGET POPULATION: All hospitalized patients and those in long-term care diagnosed with Alzheimer’s Disease/dementia. For patients previously declared legally incompetent, their legally appointed guardian will make decisions for them if the guardianship includes healthcare decision making. All patients not legally adjudicated as incompetent should be assessed for capacity to make health care decisions. Adults with MCI, mild to moderate dementia and mild-to-moderate mental retardation have been shown to be able to make treatment decisions, provide a rationale, and evaluate the risks and benefits of treatment options (Cea & Fisher, 2003).  Patients with frontotemperal dementia (characterized by personality changes, disinhibition, etc.) may demonstrate normal cognitive function on standard tests but can develop significant impaired decision-making and judgment (Manes et al., 2011).


  1. Capacity is not an all-or-nothing “on-off” switch (Mezey, Teresi, Ramesy, et al., 2000).
  2. Decision-making capacity presumes the retention of personal values and goals
  3. “Decision-specific capacity” assumes the presence or absence of capacity for a particular decision at a particular time and under a particular set of circumstances.
  4. A patient with dementia may be able to make, or indicate a preference related to daily care but not make a decision about a complex treatment choice.
  5. Even a patient with advanced dementia may have the capacity to appoint a health care proxy but not complete a living will.
  6. The more serious the risks or consequences of a decision, the clearer the patient’s decisional capacity needs to be. For decisions about high-risk or burden interventions and/or low potential benefit, and which require signed consent, a patient with dementia needs to demonstrate a fairly high degree of understanding to process information.
  7. The patient should be encouraged to participate in the discussion even if another person will be making the actual decision.
  8. A patient has the right to make the “wrong” decision, given that they have decision-making capacity (Schneider & Bramstedt, 2005). A patient’s “bad” decision from the perspective of the healthcare professionals and/or family caregivers is not necessarily a prime indicator of lack of capacity or incompetence.
  9. A patient might be determined competent by a psychiatrist yet lacking in decision-making capacity using bioethics standards (Schneider & Bramstedt, 2005).
  10. Psychiatry can identify clinical and pharmacological influences (variables) on decision-making whereas bioethics can identify the patient’s personal healthcare values and preferences (Schneider & Bramstedt, 2005).
  11. The patient’s understanding and reasoning with regard to diagnostic and treatment intervention decision making should be re-assessed periodically.

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Guidelines for Evaluating Decision-Making Capacity

Evaluation Guidelines:

Elements that a patient must demonstrate in order for the provider to have confidence that the patient has decisional capacity:

1.   “Appreciation” and understanding that s/he has the right to make a choice/decision

2.   Understanding that s/he is being asked to make a specific decision (e.g daily care preferences, diagnostic work-up, treatment).

3.   Application of a set of personal values to the decision.

4.   Communication of the decision including explaining, in his/her own words, why a particular decision was made (i.e., the burden, benefits and risks taken into consideration).

5.   Stability and consistency of the decision over time (e.g., 24 hours).

Process Guidelines:

1.   Information should be presented in short, simple sentences.

2.   After each “input” of information, ask the patient to tell you in his/her own words what was just said (e.g. “You said I can either have this test or not;” “You said I can go home or to a rehab facility”) . Listen for accuracy in the patient’s rephrasing of the recalled information; the patient does not have to use medical “jargon” or speak a word-for-word replay.

3.   Assist the patient in considering what s/he thinks will be the benefit, burden and risk of each diagnostic/treatment/care option (or refusal).

  • What would proceeding with the test/intervention likely do to further their personal goals, interests, life style, comfort, longevity, anxiety reduction, etc? (e.g. “If I have this test, it will help my treatment;” “If I go to rehab, I may get stronger faster and be better able to manage at home.”
  • What kinds of decisions have they made in the past that were of similar significance/magnitude/importance to them?

4.   Do not rush the process for capacity determination. Most healthcare decisions are not made individually; they are made with family involvement. However, the person with dementia’s authentic wishes should be respected and not over-ruled in the interests of what family or staff feel is best for them.

Decisions Made by Others:

Health Care Proxy (HCP): The Durable Power of Attorney for Health Care authorizes someone, i.e., the health care proxy or agent, to make health care decisions if the individual loses the ability to make or communicate decisions.

State laws differ about who is assumed to be the surrogate decision-maker for a person who cannot make decisions for him/herself and does not have a designated HCP, who is eligible to be the decision-maker, and the hierarchy in selecting a surrogate decision-maker. Contact the American Bar Association Commission for Legal Problems and the Elderly at for state-specific information.

  • When a decision must be made by another person, ask that person:
  • If (the patient) could join this discussion, what would s/he say?
  • Faced with similar situations in the past, how did (the patient) decide?


Best practice information on care of older adults: See Treatment Decision Making.

Cea, C.D., & Fisher, C.B. (2003). Health care decision making by adults with mental retardation. Mental Retardation, 41(2), 78-87. Evidence Level IV: Non-experimental study.

Karlawish, J.H., Casarett, D.J., James, B.D., Xie, S.X., & Kim, S.Y. (2005). The ability of persons with Alzheimer’s Disease (AD) to make a decision about taking an AD treatment. Neurology, 64(9), 1514-1519. Evidence Level IV: Non-experimental study.

Manes, F., Torralva, T., Ibanez, A., Roca, M., Bekinschtein, T., & Gleichgerrcht, E. (2011). Decision-making in frontotemporal dementia: Clinical, theoretical and legal implications. Dementia and Geriatric Cognitive Disorders, 32(1), 11-17. Evidence Level III: Experimental study.

Mezey, M., Teresi, J., Ramsey, G., Mitty, E., & Bobrowitz, T. (2000). Decision making capacity to execute a health care proxy: Development and testing of guidelines. JAGS, 48(2), 179-187.

Mitty, E. (2012). Advance Directives. In M. Boltz, E. Capezuti, T. Fulmer, & D. Zwicker (Eds.), A. O'Meara (Managing Ed.), Evidence-based geriatric nursing protocols for best practice (4th ed., pp. 579-599). NY: Springer Publishing Company, LLC. Evidence Level V and VI: Review of the Literature; Expert opinion.

Mitty, E., & Post, L.F.  (2012). Healthcare Decision Making. In M. Boltz, E. Capezuti, T. Fulmer, & D. Zwicker (Eds.), A. O'Meara (Managing Ed.), Evidence-based geriatric nursing protocols for best practice (4th ed., pp. 562-578). NY: Springer Publishing Company, LLC. Evidence Level V and VI: Review of the Literature; Expert opinion.

Moye, J., & Marson, D.C. (2007). Assessment of decision-making capacity in older adults: An emerging area of practice and research. The Journals of Gerontology, Series B, Psychological Sciences and Social Sciences, 62(1), P3-P11. Evidence Level IV: Non-experimental study.

Schneider, P.L., & Bramstedt, K.A. (2006). When psychiatry and bioethics disagree about patient decision-making capacity (DMC). Journal of Medical Ethics, 32(2), 90-93. doi: 10.1136/jme.2005.013136. Evidence Level V: Case Study

Volicer, L., & Ganzini, L. (2003). Health professionals' views on standards for decision-making capacity regarding refusal of medical treatment in mild Alzheimer’s disease. JAGS, 51(9), 1270-1274. Evidence Level IV: Non-experimental study.

The Hartford Institute for Geriatric Nursing would like to acknowledge the original author of this Try This, Ethel L. Mitty, EdD, RN, who made significant contributions to the field of gerontolgoical nursing. Dr. Mitty has, sadly, passed away.

A series provided by

The Hartford Institute for Geriatric Nursing

and the Alzheimer’s Association