The Decision Nobody Wants to Make

When a person with terminal illness or advanced dementia can no longer swallow safely or adequately, family and clinical teams face one of the most difficult decisions in medicine: should we use artificial nutrition to maintain life, or should we focus on comfort and allow the natural process to unfold?

This is not a simple decision. It involves clinical evidence, personal values, cultural context, legal frameworks, and — most importantly — what the patient would have wanted. This guide aims to help families in Hong Kong understand the options, ask the right questions, and navigate this decision with the support of a palliative care team.

Understanding the Options

Nasogastric Tube (NG Tube / 鼻胃管)

An NG tube is a soft tube inserted through the nose, down the oesophagus, and into the stomach. It allows liquid nutrition (formula) and medications to be delivered directly to the stomach, bypassing the mouth and throat entirely.

Clinical characteristics:

• Can be inserted and removed without surgery
• Requires regular replacement (typically every 2–4 weeks)
• The tube is visible and can be distressing for patients and families
• Patients — especially those with dementia — frequently attempt to pull it out, often requiring physical restraints
• Associated with increased aspiration risk from reflux (formula can reflux from the stomach back up the oesophagus)
• Does not prevent aspiration of oral secretions

When it is appropriate: Short-term NG feeding can be appropriate when dysphagia is expected to be temporary — for example, post-stroke with active recovery underway, or during cancer treatment. In a palliative context with terminal illness and no expected recovery, long-term NG tube feeding is controversial and its benefit is not supported by clinical evidence in conditions like advanced dementia.

PEG Tube (Percutaneous Endoscopic Gastrostomy / 胃造口管)

A PEG tube is a more permanent feeding tube inserted directly through the abdominal wall into the stomach via an endoscopic procedure, usually under sedation.

Clinical characteristics:

• Surgical procedure with associated risks (bleeding, infection, anaesthetic risk)
• More comfortable and less visible than NG tube once established
• Patients still attempt to pull it — but removal requires a clinical procedure
• Associated with aspiration risk from reflux, similar to NG tube
• Does not prevent aspiration of oral secretions

When it is appropriate: PEG may be appropriate when long-term enteral nutrition is clearly indicated and the patient’s overall prognosis supports it — for example, ALS/MND where the patient has expressed a strong wish to prolong life as long as possible, with good cognitive function and preserved quality of life. It is generally not recommended for patients with advanced dementia.

Oral Comfort Feeding

Oral comfort feeding provides small amounts of food and fluid by mouth, with the primary goal of pleasure, comfort, and maintaining human connection — not nutritional sufficiency.

Clinical characteristics:

• Accepted aspiration risk in exchange for patient wellbeing and pleasure
• Maintains the social and relational meaning of meals
• Does not require any invasive procedure
• Appropriate oral care (mouth moistening) manages dry mouth, which is the most distressing oral symptom at end of life

The Clinical Evidence on Artificial Nutrition in Advanced Dementia

The evidence on tube feeding in advanced dementia is clear and consistent:

• Tube feeding does not prolong life in advanced dementia. Multiple systematic reviews have found no survival benefit of tube feeding over careful hand feeding in this population.
• Tube feeding does not reduce aspiration pneumonia. The primary source of aspiration in advanced dementia is oral secretions, not food — and tube feeding does not address this.
• Tube feeding does not improve quality of life or reduce pressure sores, infections, or discomfort.
• Tube feeding causes harm — tube-related discomfort, restraint to prevent tube removal, and loss of the comfort of oral food are well-documented harms.

This does not mean tube feeding is never appropriate — it means that for patients with advanced dementia, careful comfort-focused oral feeding is the clinically and ethically preferred approach.

Ethical Framework

Patient Autonomy

The primary ethical principle is the patient’s own expressed wishes. If the patient has an Advance Directive (預設醫療指示) that specifies refusal of artificial nutrition, that wish must be respected. In Hong Kong, the Advance Directive is a legally recognised document under the common law framework.

Best Interests

If the patient lacks capacity and has not documented specific wishes, decisions are made in the patient’s best interests. “Best interests” is not the same as “maximum life extension” — it encompasses quality of life, comfort, dignity, and what the patient would most likely have wanted based on their known values and preferences.

Proportionality

A medical intervention is proportionate if its benefits outweigh its burdens for that specific patient at that specific stage of illness. Tube feeding that provides no meaningful benefit but causes significant discomfort is disproportionate — and the ethical principle of non-maleficence (do no harm) applies.

A Family Discussion Guide

When facing this decision, families should be guided to discuss:

1. What did / does the patient say they want? Has the patient ever expressed wishes about artificial feeding? Did they ever say “don’t put tubes in me” or “keep me alive no matter what”? These expressed wishes matter, even if they were not formally documented.

2. What is the medical team’s prognosis? Ask the doctor directly: “Is there a realistic expectation that my family member will recover to a point where they can eat safely again?” If the answer is no, tube feeding is unlikely to change the outcome.

3. What are the specific burdens of tube feeding for this patient? Will they need restraints? Are they likely to pull the tube out repeatedly? What are the risks of the procedure? What will their daily experience be like with the tube?

4. What can comfort feeding provide? What foods did they love? Are there small amounts of specific foods that can be offered safely or with accepted minimal risk? What would bring them pleasure?

5. Is there consensus in the family? If there is disagreement, ask for a family meeting with the palliative care team before making a decision.

HK Palliative Care Team Resources

The following professionals can guide families through artificial nutrition decisions:

• Palliative care physician: Provides medical assessment and evidence-based guidance on prognosis and appropriateness of interventions
• Speech-language pathologist (SLP): Assesses current swallowing function and advises on safe oral feeding options
• Clinical dietitian: Advises on nutritional needs and supplement options in the palliative context
• Medical social worker: Facilitates family meetings, provides emotional support, and assists with accessing community services
• Clinical ethicist: Available through major HA hospitals for complex ethical decisions

Referral: Ask the patient’s attending physician for a palliative care consultation (紓緩治療會診). All HA hospitals have palliative care services; specialist inpatient palliative care is available at designated hospitals.

This guide provides educational information for families facing difficult decisions. Individual decisions must be made in consultation with the multidisciplinary palliative care team.