Medical Ethics, Capacity and Consent — Written Clinical Reasoning

SAQ 1 — Integrated Management of the Incapacitous Patient with Dementia, Pneumonia and a Family Demanding Futile Intensive Care (20 marks, 30 minutes)

Prompt: Outline your integrated approach to this 78-year-old woman with advanced Alzheimer disease and aspiration pneumonia, whose enduring guardian son demands intensive care the team considers futile, including: (a) the capacity assessment; (b) the ethical framework; (c) the role of the substitute decision-maker; (d) the goals-of-care conversation with the son; (e) the proposed ceiling of treatment; and (f) the escalation pathway if the conflict cannot be resolved. [1]

Model Answer

(a) Assessment of capacity (3 marks): [1]

This patient almost certainly lacks capacity for the decision about the intensity of treatment. I apply the two-stage test [1][2]. Stage 1 (the diagnostic stage): she has a clear impairment of mind or brain — advanced Alzheimer disease, evidenced by her bed-bound status and her inability to communicate meaningfully. Stage 2 (the functional stage): because of this impairment she cannot understand the information about the pneumonia and the treatment options, retain it, use or weigh it, or communicate a decision. She fails all four functional abilities for this decision. I would document the assessment formally, noting the specific decision assessed (the intensity of treatment for the pneumonia), the information I attempted to convey, the patient's responses, and the conclusion with reasoning. I would also exclude reversible contributors to impaired consciousness (hypoxia, sepsis, metabolic disturbance, drug effects) by correcting the oxygenation, treating the infection, and reviewing her medication chart, but her advanced dementia is an irreversible impairment that establishes incapacity independent of the acute delirium that may also be present.

(b) The ethical framework (3 marks): [1]

The four principles of biomedical ethics (Beauchamp and Childress) structure the analysis. Autonomy: the patient lacks capacity and cannot exercise autonomy in real time, so her autonomy must be exercised through the substituted judgement of those who knew her values and prior wishes. Beneficence: the duty to act for her welfare, weighing the (very low) likelihood of benefit from intensive care against the (high) burden of suffering and the loss of dignity. Non-maleficence: the duty to avoid harm, including the harm of a prolonged and distressing death in intensive care, of painful and futile interventions, and of the loss of a comfortable death. Justice: the fair allocation of a scarce intensive care resource to patients likely to benefit, and the avoidance of futile treatment. The principles are in tension: the son's demand invokes a version of beneficence (acting for her), but the likely futility invokes non-maleficence and justice. The resolution is the best-interests test, using the substituted judgement standard — what would this patient have wanted, given her values and her condition? [1]

(c) The role of the substitute decision-maker (3 marks): [1]

The son is her enduring guardian, the legally recognised substitute decision-maker. His role is not to impose his own wishes but to represent the patient's prior values and wishes — to tell the team what she would have wanted, what mattered to her, what she considered an acceptable outcome. He should be asked: did she ever discuss her preferences for intensive care or end-of-life treatment? Did she express views about being kept alive in a condition she would not have wanted? What was her understanding of her dementia and its trajectory? His answers inform the substituted judgement. The clinician's role is to facilitate this, to provide honest information about the prognosis and the likely outcome of intensive care in advanced dementia, and to make a recommendation for a proportionate plan. The decision is made jointly by the clinician and the substitute decision-maker in the patient's best interests; if they cannot agree, the matter is escalated (see (f)). [1]

(d) The goals-of-care conversation with the son (4 marks): [1]

I would use a structured, empathic conversation. First, set the scene — a quiet, private room, with a senior clinician and a nurse, enough time, and any other family the son wishes present. Second, establish his understanding and his mother's values — "Tell me what you understand about your mother's condition and how she has been. Did she ever talk about what she would want if she became very ill?" Third, share honest information — that her Alzheimer disease is advanced and irreversible, that the aspiration pneumonia is a common and often terminal event in this stage, and that intensive care in a patient with advanced dementia has a very low chance of survival to discharge and a high chance of a prolonged, distressing death in the unit, often with mechanical ventilation that she would not be able to come off. Fourth, align the recommendation with her values — if she valued her dignity, her comfort, and being cared for in a familiar environment, then the plan that best serves her values is active treatment of the pneumonia within a ceiling of ward-based care, focused on symptom relief, dignity, and family support, with no escalation to intensive care and no cardiopulmonary resuscitation. Fifth, address the son's grief and any guilt — acknowledge that wanting everything is often an expression of love, and that choosing comfort-focused care is not giving up but is an act of care in keeping with his mother's values. I would use the SPIKES protocol (particularly the Emotions step, allowing silence for his distress) [6]. Sixth, document and review — record the conversation, the agreed plan, and the rationale, and offer a follow-up family meeting.

(e) The proposed ceiling of treatment (4 marks): [1]

I would propose a ceiling of ward-based active treatment with no escalation to intensive care and no cardiopulmonary resuscitation, focused on symptom control and comfort. The active treatment of the pneumonia within the ceiling would include: supplemental oxygen titrated to a target saturation appropriate to her condition (recognising that in advanced disease a lower target may be appropriate); a trial of antibiotics (if consistent with her overall goals and if the son agrees, recognising that in the dying phase antibiotics may be withheld); bronchodilators if there is a reversible component; opiate analgesia and anxiolysis for breathlessness and distress (oral morphine 2.5 mg as needed, or subcutaneous morphine 2.5 mg if she cannot swallow); and a subcutaneous syringe driver for anticipatory symptom control if she is dying. I would address the artificial hydration question specifically — in the dying patient, artificial hydration may be reduced or withheld as it may contribute to pulmonary and peripheral oedema without benefit, but the decision is made on best-interests grounds with the family, not unilaterally. The ceiling is documented as a medical plan (not for resuscitation, not for ICU escalation, ward-based active treatment within the ceiling) and communicated to the nursing and medical team and to the residential aged-care facility for continuity. [1]

(f) The escalation pathway if the conflict cannot be resolved (3 marks): [1]

If, after a thorough goals-of-care conversation, the son continues to demand intensive care and the team considers it futile, the pathway is: first, a second medical opinion from a senior clinician (the attending physician or the director of medicine), which may resolve the disagreement; second, involvement of the hospital ethics committee or clinical ethics service, which can facilitate a structured best-interests discussion; third, referral to the guardianship tribunal (or in the UK, the Court of Protection), which can make the best-interests decision independently. Throughout, the patient continues to receive active treatment within the current ceiling and symptom control. The treating team should not unilaterally impose intensive care against its clinical judgement, nor unilaterally withhold all active treatment; the resolution is through the best-interests process and, where necessary, the tribunal. The documentation throughout should record the capacity assessment, the best-interests reasoning, the goals-of-care conversations, the second opinion, and any tribunal ruling. [1]

SAQ 2 — The Capacitous Refusal of Blood Products by a Witness Patient (10 marks)

Prompt: A 55-year-old man with a Witness faith presents with haematemesis and melaena, a haemoglobin of 55 g per litre, and signs of hypovolaemic shock. He refuses any blood transfusion and any primary blood components (red cells, plasma, platelets) on the grounds of his religious beliefs. He understands that he may die without the transfusion, he can retain and weigh that information, and his decision is voluntary and consistent with his lifelong values. He consents to endoscopy, surgery, and all non-blood management. Outline: (a) the capacity assessment and the ethical basis for respecting the refusal; (b) the blood-conserving management; (c) the limits of the doctrine of necessity in this situation; and (d) the documentation and the ongoing care. [1]

Model Answer

(a) Capacity assessment and the ethical basis (3 marks): [1]

I confirm his capacity for the specific decision (refusal of blood and primary blood components) using the two-stage test [1][2]. Stage 1: he has no impairment of mind or brain (he is alert, oriented, and not in delirium). The functional stage is therefore not triggered, but I would still test the four abilities directly to document capacity clearly in a high-stakes refusal: he understands the nature of the bleed, the proposed transfusion, the principal risk of refusing (death), and the realistic benefit of accepting; he can retain the information; he uses and weighs it (his reasoning is that his faith and his hope of salvation outweigh the earthly benefit of longer life, and that accepting blood would be a betrayal of his deepest values — a reasoning that is consistent with his lifelong beliefs, not distorted by delusion, depression, or compulsion); and he communicates a clear, consistent decision. The decision is voluntary (free from coercion — I would see him alone to confirm there is no family pressure in either direction) and informed (he has received the relevant information). The ethical basis for respecting the refusal is autonomy: a capacitous adult can refuse any treatment, including life-saving treatment, and the refusal must be respected. Beneficence does not override autonomy for a capacitous adult; over-riding his refusal would be battery.

(b) Blood-conserving management (3 marks): [1]

The management is to stop the bleeding and restore the circulating volume without blood, using every available blood-conserving strategy. I would: give tranexamic acid 1 g intravenously over ten minutes then 1 g over eight hours (reduces bleeding in upper gastrointestinal haemorrhage); restore circulating volume with crystalloid (balanced salt solution) and, if required, a colloid to maintain perfusion; perform urgent upper gastrointestinal endoscopy with haemostasis (adrenaline injection plus thermal or mechanical therapy for a bleeding ulcer), with interventional radiology (transarterial embolisation) and surgery as backstop modalities; offer intra-operative cell salvage if the patient accepts it (many Witness patients accept cell salvage in a continuous circuit, but this must be confirmed individually, as acceptance varies); give intravenous iron (ferric carboxymaltose) to support red cell production once the bleed is controlled; and consider erythropoietin to accelerate red cell recovery. I would monitor him closely (haemoglobin trend, haemodynamics, oxygenation, lactate, level of consciousness) and have a low threshold for definitive haemostasis. The aim is to minimise the duration and depth of anaemia by controlling the bleed as rapidly as possible. [1]

(c) The limits of the doctrine of necessity (2 marks): [1]

The doctrine of necessity allows treatment without consent where a patient lacks capacity, the treatment is immediately necessary to save life or prevent serious deterioration, delay is harmful, and no prior valid refusal exists. It does not apply here, because this patient has capacity and is refusing. The doctrine cannot be invoked to over-ride a capacitous refusal, however life-saving the treatment. There is no legal or ethical basis for transfusing this patient against his will. The only circumstance in which the doctrine might arise is if the patient were to lose capacity (for example, from hypovolaemic collapse and delirium) and had not made a valid and applicable advance refusal of blood; in that narrow situation, some jurisdictions would permit transfusion under necessity — but a Witness patient who has clearly refused blood while capacitous has effectively made a contemporaneous advance refusal that would continue to bind. I would clarify the patient's wishes about a loss-of-capacity scenario directly: "If you were to lose consciousness, do you want us to continue to respect your refusal of blood?" [1]

(d) Documentation and ongoing care (2 marks): [1]

I would document the capacity assessment in detail (the specific decision, the information given, the patient's performance on each of the four abilities, the conclusion with reasoning, and the voluntariness check). I would document the discussion of the risks of refusal and the blood-conserving plan, the patient's consent to endoscopy, surgery, and non-blood management, and his specific acceptance or refusal of cell salvage. I would record the management plan and the monitoring. I would continue to care for him — the refusal of blood does not justify any reduction in the intensity or the compassion of care; he receives the full standard of management for the bleeding, modified only by the exclusion of blood products. I would involve the hospital liaison committee for Witness patients if the patient wishes (these committees can support the patient and the clinical team), and I would maintain the doctor-patient relationship throughout, addressing his symptoms, his fears, and his family. If he were to die from anaemia despite maximal non-blood management, that is the consequence of his capacitous refusal, and his death would be supported with dignity and comfort. [1]