sb physiology (icsm bsc)
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Ethical Issues in Nutrition Support
Dr Simon Gabe
Consultant Gastroenterologist
St Mark’s Hospital
London
Religion
Human Rights
Human Rights Fundamental right to life
– Does not mean bare existence– Existence that has a minimum quality & as
free as possible from distress & pain
Right to die– When individuals decide that their life is
below the minimum– Considerations of humanity imply a right to
assistance (medical) to die painlessly & easily
Death & Dying
Death, like birth, is a natural event
A professional carerhas a duty to prolong life but not to inappropriately prolong dying
The difficulty …
to recognise when death is occurringto recognise when death is occurring
Dying
Sudden / final event of deterioration When deterioration is quick – dying Appropriate to:
– Basic human support– Compassion– Emotional support– Medical treatment– Withdraw medical treatment
Ashby & Stofell, 1995
“The purpose of medical science is to benefit the life and health of those who turn to medicine.
It surely was never intended that it be used to prolong biological life in patients bereft of the prospect of returning to an even limited exercise of human life.”
I'm not afraid to die…
I just don't want to be there when it happens!
Essentials for life
Oxygen -minutes
Water - days
Food - weeks
Reproduction - years
NutritionMedicine
Nursing
Surgery
Psychiatry
Community
Paediatrics
When is it lawful to withhold or
withdraw life-prolonging treatment?
Ethics & Nutrition Support
Hippocratic Tradition
Reduce violence or disease
Do no harm
Do away with suffering
Refuse to treat where medicine powerless
Duty to provide nutrition
Is the duty absolute, without exception or Is the duty absolute, without exception or regard to consequence or circumstance?regard to consequence or circumstance?– If the body cannot tolerate nutrition– The leading criterion is the patients best interest
The duty to feed is presumptive not absolute. The duty to feed is presumptive not absolute. It is rebuttable in certain circumstances:It is rebuttable in certain circumstances:– Patients refusal of consent– A persistent vegetative state?
Ethics & Nutrition Support
Does the provision of nutritional support constitute a medical treatment?
Does removal of an IV line or feeding tube ‘cause’ the death of a patient?
Is discontinuation of feeding, murder?
Murder
The wilful killing of any subject whatever, with malice aforethought …
Can be a deliberate act or neglect
Competence Patients are competent to consent to
treatment, or to refuse consent, if they have capacity to arrive at the decision
All adults are presumed competent, although this can be rebutted
A doctor who overrides a competent patients refusal of treatment can be liable in battery
Mrs B
43 year old ladyParalysed from the neck downKept alive by ventilationFelt that her life was not worth living
Asked doctors to switch off the ventilator– Doctors refused
Court felt that she was competentVentilator switched off at her request
Passive assisted suicide allowedPassive assisted suicide allowed
Autonomy Rules!
Diane Pretty
43 year old, MND Paralysed from the neck down
– Not on a ventilator Virtually unable to speak Enteral tube feeding Wanted to die in a humaine & dignified
manner (assisted by her husband) Court refused
Assisted suicide refusedAssisted suicide refused
IncompetenceAdvance directive
Anticipatory refusal of treatment Can be written or oral An advance refusal is legally binding if:
“clearly established & applicable to the circumstances” However, may not be directly applicable to
current circumstances A doctor who overrides a binding advance
directive is liable for battery
IncompetenceNo advance directive
The legal duty of the doctor is to act in the patients best interests
““Best interests”Best interests”
??
Airedale Trust vs. Bland (1993)
Anthony Bland Age 17 Crushed in the Hillsborough stadium disaster Persistent vegetative state for over 3 years Completely insensate with no hope of recovery His doctors, with the full agreement of his
parents, wished to withdraw the means of intensive care
High Court: declared that the withdrawal of hydration and feeding would be unlawful
Court of Appeal: supported the High Court House of Lords: dismissed the Court of
Appeal judgement– The provision medical treatment could no longer
provide the chance of recovery– Therefore medical treatment could be withdrawn
Airedale Trust vs. Bland (1993)
Important rulings after Bland Best interests
– Medical decisions for a mentally incapable patient should be made in the best interests of the patient
– If a decision to withdraw or withhold life prolonging treatment is in best interests of the patient then it is lawful (i.e. best interests can include death)
Feeding– Artificial nutrition & hydration are medical treatments– Feeding against a patients wishes constitutes assault
Withholding and withdrawing treatment– There is no legal difference
Terri SchiavoFeb 1990 Cardiac arrest with severe brain damage (PVS)
May 1998 Mr Schiavo files petition to remove feeding tube
Oct 2003 Feeding tube removed & Florida lower house passes "Terri's Law", allowing the Governor to order doctors to feed Mrs Schiavo
Sept 2004 Florida Supreme Court strikes down law
18 Mar 2005 Florida court allows removal of tube
22 Mar 2005 Federal judge rejects appeal
23 Mar 2005 Appeals court backs federal ruling
29 Mar 2005 Federal court grants parents leave to appeal
30 Mar 2005 Federal court & Supreme Court reject parents' appeal
31 Mar 2005 Terri Schiavo dies
Passive Euthanasia
The intentional hastening of a patients death by withholding or withdrawing treatment: where causing death is the doctors aim
Pauline
61 year old lady
2001 Ileal resection then EC fistula Massive intestinal infarction
– Residual duodenal stump (then fistulated)– HPN established
1/2002 SVC thrombosis – stented successfully
3/2002 Abnormal LFTs
3/2002 Bleeding GU
11/2002 L pleural effusion .. ?TB
12/2002 Recurrent SVC thrombosis (stented)
12/2002 Recurrent GI bleed (small)
Enough!
After mentioning about the possibility of an endoscopy for her GI bleed
“I can’t cope any longer”
Wants to stop her treatment– Including her IV fluids and nutrition
What would you do now?
What we did …Listen to the patient
– Discussions with her & family
Competence– Was she competent to make
the decision?– Yes, in my opinion– Psychiatrist also
Carers views soughtReligious perspectiveLegal perspective
– Assault to feed against her wishes
ThenPalliative care team
involved Allowed to die
– by withdrawing fluids & nutrition
– husband at her bedside
Advanced dementia
4 million cases in the USA Frequently
– swallowing difficulties– Anorexia / loose interest in eating– aspiration
Decision to insert a feeding tube
Advanced dementiafeeding tubes
Often difficult to provide adequate nutrition
Disputed whether aspiration is reduced by NG or PEG tubes
Morbidity & mortality with PEG insertion
Little evidence to suggest that tube feeding prolongs life
Purpose of tube usually unclear for the patient (resulting in tube withdrawal)
Advanced dementiafeeding tubes
Increasing view that artificial nutrition should not be used in patients with advanced dementia
But there will always be exceptions– Vascular disease (cognitive function may improve)
Patient autonomy paramount
Requires close discussion with family
Advanced Dementia
Cultural variations in treatment– Germany / UK
Nursing homes insist on PEG over NG– Dementia, CVA
Ethical issues?
Should I tube feed this patient?
If in doubtIf in doubt A trial of treatment is recommended
NG or PEG? NG feeding may be more appropriate
than PEG in this setting However, trial of PEG feeding possible
Hippocratic or Hypocritical?
The law & the BMA guidance relating to withholding & withdrawal of treatment & tube feeding are ethically incoherent
The intentional shortening of a patients life Passive euthanasia (by omission)
Active euthanasia
Assisted suicide
Passive assisted suicide
Active assisted suicide