Can Family Override an Advance Directive in the NT?
The Short Answer
If the patient recorded a valid Advance Consent Decision in their Advance Personal Plan, neither the family nor the treating doctor can override it. The refusal or consent is legally binding.
But the full picture has important nuances, because not everything in an APP has the same legal force.
Two Components, Two Levels of Authority
The Advance Personal Plan contains two types of healthcare instructions, and they operate very differently:
Advance Consent Decisions are binding. If the maker recorded "I refuse cardiopulmonary resuscitation if I have an irreversible brain injury," that decision must be followed. The treating clinician is legally required to comply. A substitute decision-maker cannot consent to CPR in that circumstance. Family members cannot demand it. The hospital cannot override it.
Advance Care Statements are guiding but not binding. If the maker wrote "I value quality of life over length of life," decision-makers and clinicians must give that statement serious consideration, but they are not legally compelled to follow it if doing so would be impracticable, unlawful, or would impose an unreasonable burden.
The distinction matters enormously in clinical practice. A family member who disagrees with a treatment refusal has no legal mechanism to override an Advance Consent Decision. But a family member who believes the treating team is not adequately considering the maker's Advance Care Statement can raise that as a concern.
When a Doctor Might Refuse to Follow It
There are narrow circumstances where a clinician may not follow an Advance Consent Decision:
The decision does not cover the specific situation. If the maker refused ventilation "in the event of terminal cancer" but is in the ICU after a car accident, the refusal may not apply. The circumstances described in the Advance Consent Decision must match the actual clinical situation.
The maker did not have capacity when they made the decision. If there is evidence that the maker lacked decision-making capacity at the time they signed the APP, the Advance Consent Decision may be invalid. This is a high bar — capacity is presumed unless proved otherwise.
The decision was made under undue influence. If there is evidence that someone coerced the maker into recording a specific refusal, the decision can be challenged.
In each of these cases, the clinician does not simply override the decision on their own judgement. They must have a specific, documentable reason for not following it, and the matter should be escalated to NTCAT if there is a genuine dispute.
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What Families Can Do
If a family member disagrees with a treatment approach:
Challenge the APP's validity. Any interested person can apply to NTCAT to review, vary, or revoke an Advance Personal Plan. NTCAT will examine whether the maker had capacity, whether the document was properly executed, and whether the decision-maker (if one was appointed) is acting in the maker's interests. NTCAT filing is free for these applications.
Request an emergency hearing. For urgent medical situations, NTCAT can schedule hearings within days.
Raise concerns with the treating team. Clinicians are required to consider the family's input as part of the broader clinical picture, even if they cannot override a binding Advance Consent Decision.
Contact the Public Guardian. If no one in the statutory hierarchy is available and no applicable Advance Consent Decision exists, the Public Guardian can act as decision-maker of last resort.
What Doctors Can Do
If there is a genuine dispute about the APP's validity or whether the documented circumstances apply, an interested person or healthcare provider can apply to NTCAT. Clinicians must make reasonable efforts to find and follow an applicable Advance Consent Decision. In emergency situations, the Act permits a healthcare provider to provide urgent treatment without consent — but this is a narrow exception, not a general override power.
Preventing Disputes
Most family disputes over advance directives arise because the family did not know what the maker wanted, or because the document was ambiguous about specific clinical scenarios.
Clear, specific Advance Consent Decisions that name particular treatments and particular circumstances dramatically reduce the scope for disagreement. "I refuse mechanical ventilation if I have a progressive neurological condition with no realistic prospect of recovery" leaves much less room for dispute than "no heroic measures."
Having the Goals of Care conversation with your family before a crisis — sharing your reasoning, not just your conclusion — means that when the treating team references your APP, your family understands why you made the choices you did.
Our Northern Territory Advance Directive & Living Will Kit includes a family discussion guide and a Goals of Care worksheet designed specifically to prevent the kind of ambiguity that leads to bedside disputes.
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