mati otak (oleh pusat transplan nasional)
TRANSCRIPT
BRAIN DEATH BRAIN DEATH (MATI OTAK) (MATI OTAK)
Pusat Transplan NasionalPusat Transplan Nasional
Different groups have different definitions of the word “death”.“death”.
Takrif mati berbeza-beza bergantung dari sudut mana ianya di lihat
Socio-cultural Recognition of Death:Socio-cultural Recognition of Death:
Not moving ( including not breathing) Not responding Pallor Cold Decay
Most Certain Medical Signs of Death:
- hypothermia (sejuk)-dependent lividity ( kebiruan di bawah badan)- rigor mortis ( kaku anggota )
Biologist:
Death is a process of progressive decay of various tissues and organs depending
on their susceptibility to oxygen deprivation.
Death is the cessation of life
Dari segi undang-undang, mati ialah tamat hayat
Conventional Concept of LifeConventional Concept of Life
RespirationRespiration Heart BeatHeart Beat
LIFELIFE
Conventional Concept of DeathConventional Concept of Death
No RespirationNo Respiration No Heart BeatNo Heart Beat
DEATHDEATH
But is every case of no respiration and no heart beat Death?
No Respiration No Heart Beat
No Oxygen to Brain
Brain DeathBrain Death
DEATHDEATH
• Secara umum undang-undang menerima takrif mati dan cara penentuan mati yang di gunakan oleh ahli perubatan berdasarkan ilmu dan amalan semasa perubatan
Stedman’s Medical Dictionary:Stedman’s Medical Dictionary:
Death is when there is permanent loss of heart beat and permanent loss of
spontaneous respiration or when there is cerebral death.cerebral death.
The concept of death is the same for all groups:
The permanent cessation of the coordinated
function of the organism as a whole.
In Many Cultures and Religions:
Respiration is the more important sign of lifeRespiration is the more important sign of life
JUDICIAL HANGINGJUDICIAL HANGING
1. Rupture of ponto-medullary junction.2. Fracture dislocation of the odontoid process
Instantaneous and permanent loss of consciousness and apnoea.
Heart beat continues for ~20 minutes.
Time of death= time of irreversible unconsciousness and apnoea.
After World War 2After World War 2
Intensive care and treating the severely injured and Intensive care and treating the severely injured and severely ill became possibleseverely ill became possible
Use of ventilators became widespread and many Use of ventilators became widespread and many patients were on ventilators for days and weeks patients were on ventilators for days and weeks
when they possibly could have been dead.when they possibly could have been dead.
The DilemmaWhen patient is on respirator
or mechanical heart
WHEN IS DEATH?WHEN IS DEATH? HOW TO DIAGNOSE DEATH HOW TO DIAGNOSE DEATH
Debates and discussions involving many
different groups of interested people;
doctors, priests, lawyers, philosophers,
scientists, sociologists etc.
Kematian yang tidak berpunca dari kerosakan atau kecederaan otak
Pernafasan
Perlahan
Pesakit kebiruan
Nafas Berhenti
MATI
Jantung
Lemah
Tekanan darah menurun
Tiada Tekanan Darah
Jantung Berhenti
Kematian Dalam Serangan Sakit Jantung
Gangguan Bekalan Darah Kepada Otot Jantung
Gangguan Rentak Denyut Jantung( Ventricullar fibrillation or Asystole )
Jantung Tidak Dapat Pam Darah
Darah tidak sampai ke otak
Nafas BerhentiKoma
MATI
Kematian Dalam Kes Kes Kerosakan atau Kecederaan Otak
Otak Rosak Teruk
Tekanan Dalam Kepala Meningkat (Raised ICP)
Tekanan Dalam Kepala Mengatasi Tekanan Darah
Tiada Peredaran Darah ke OtakOtak tidak mendapat Oksigen
Nafas Berhenti
MATI
Sebab-sebab Mati OtakSebab-sebab Mati Otak• Kecederaan kepala yang terukKecederaan kepala yang teruk
- pendarahan / otak bengkak• Strok Strok
- pendarahan spontan (Darah Tinggi /
AVM/Aneurysm )
- darah beku (Thrombo-embolic ) • Otak tiada oksigenOtak tiada oksigen
- selepas kardio-respiratori terhenti• Barah OtakBarah Otak ( Primary Brain)
Mati OtakMati Otak• Satu cara bagaimana kematian berlakuSatu cara bagaimana kematian berlaku• Kurang daripada 1-2% kematian terjadi beginiKurang daripada 1-2% kematian terjadi begini• Kematian seluruh otak termasuk batang otak yang Kematian seluruh otak termasuk batang otak yang
mengawal penafasan dan fungsi jantungmengawal penafasan dan fungsi jantung• Otak mati kerana tidak mendapat oksigen oleh Otak mati kerana tidak mendapat oksigen oleh
kerana pengaliran darah yang terjejas akibat kerana pengaliran darah yang terjejas akibat tekanan dalam kepala yang terlalu tinggitekanan dalam kepala yang terlalu tinggi
• Tidak bernafas tetapi oleh kerana pesakit di waktu Tidak bernafas tetapi oleh kerana pesakit di waktu itu sedang menerima penafasan dengan machine, itu sedang menerima penafasan dengan machine, jantung masih lagi berfungsi buat seketika dengan jantung masih lagi berfungsi buat seketika dengan sokongan, tetapi akhirnya akan berhenti jugasokongan, tetapi akhirnya akan berhenti juga
Brain Death – Historical PerspectivesBrain Death – Historical Perspectives
1956 – Lodstedt & Von Reis 1st described
ventilated patients with absent brainstem
reflexes, absent cerebral blood flow and
cerebral necrosis
1959 – “ le coma de passe ”“ le coma de passe ” ( Beyond Coma )
Goulon Mollarret
defined death by neurologic criteria
Brain Death – Historical PerspectivesBrain Death – Historical Perspectives
1976 – UK “ Diagnosis of Brain Death “
1995 – Concept of brain stem death in UK
1993 – 1st Malaysian consensus on Brain Death
2003 – 2nd Malaysian consensus on Brain Death
Dx of brain death now accepted throughout the world
Brain deathBrain death
• Accounts for 1% of all hospital deaths
• 13-15 % of deaths in Neurosurgical ICU
Why the need for Brain Death ConceptWhy the need for Brain Death Concept
• Ethical reasons
• Human reason
• Intellectual reason
• Utilitarian reason
BRAIN DEATHBRAIN DEATH
A term that means that a person is recognised as dead based on neurological examination
DEFINITIONDEFINITION
• IrreversibleIrreversible loss of function of the whole loss of function of the whole brain, including the brainstem.brain, including the brainstem.
Features of Brain Death
COMA or UNRESPONSIVENESS
ABSENT BRAINSTEM REFLEXES
APNOEA ( No breathing )
Need to differentiate from :
• COMACOMA: Unarousable unresponsiveness.
• PERSISTENT VEGETATIVE STATEPERSISTENT VEGETATIVE STATE: Absent cognitive function, but has retained brainstem or ‘vegetative’ components.
• LOCKED-IN SYNDROMELOCKED-IN SYNDROME: Alert and aware, but quadriplegic, with only intact vertical eye movements.
BRAIN DEATH MISCONCEPTIONSBRAIN DEATH MISCONCEPTIONS
• NOT vegetative state
• NOT severe brain damage
• NOT “mercy killing”/ euthanasia.
Brain Death CertificationBrain Death Certification
2 specialists trained in brain death diagnosis - usually anaesthetist, neurologist, neurosurgeon, not involved in transplantation
2 tests
Period of observation between tests
Brain death confirmed when second set of tests completed
Brain Death Diagnosis
VERY STRINGENT
1. Preconditions.2. Exclusions.3. A set of Criteria.4. Examinations to meet the criteria.5. Repeat the examination.6. Confirmatory test desirable.
If in doubt , do not proceed with diagnosis
Brain Death DiagnosisBrain Death Diagnosis
1. Severe and irreparable structural brain damage AND 2. Irreversible coma AND 3. (a) Irreversible loss of brain stem reflexes and respiratory function ( apnoeic ) OR (b) Cessation of intracranial blood flow
Brain Death TestBrain Death TestClinical bedside testing of brainstem function
1.Coma or unresponsivenes
- absence of coordinated eye movement and motor activity including decorticate and decerebrate posturing
- Absent spontaneous motor activity ( except for spinal reflexes ) and seizures
- No motor response to deep pain
2. Absent Brain stem reflexes 3. Apnoea
Brain Death AssessmentSupportive Tests
Four vessel intracranial angiogram
Brain perfusion scan
Transcranial Doppler studies
EEG
Most Unequivocal Proof of Dead
Brain is NO CIRCULATION
Paediatric Brain Death
• EEG mandatory
• Interval between 2 examinations 7 days to 2 months old : at least 48 hrs 2 months to 1 year old : at least 24 hrs 1 year to 2 years old : at least 12 hrs
“Ventilator Brain”
• Widespread necrosis
• Oedematous hemispheres and brainstem
• Microscopic haemorrhage
• Pericellular oedema.
Sequalae of Brain Death
Heart will stop within few hours to few days irrespective of what treatments are given.
Documented 2004 cases all developed asystole
Japanese Group: 718 cases, average time to asystole 4 days (90% in 8 days)
Termination of ventilator
Time of death certified at confirmation of brain death - not at time of cardiac asystole or ventilator disconnection
Ventilator can be disconnected anytime after confirmation of brain death - no need to wait for asystole to occur
THE MUSLIM WORLD
• 1. Islamic Jurist at Jeddah Conference, 1985.
Acceptance:• 2. Amman Conference, 1986 – recognised Brain
Death as Death.• 3. Reaffirmed by 10th Fifq Academy Conference ,
Makkah 1987.
33rdrd International Conference of Islamic Jurists International Conference of Islamic Jurists
Amman Oct 1986 ( 1407)
A person is pronounced legally dead and consequently all dispositions of the Islamic law in case of death apply if oneof the two following conditions has been established :1. There is total cessation of cardiac and respiratory functions , and doctors have ruled that such cessation is irreversible2. There is total cessation of all cerebral functions and experienced There is total cessation of all cerebral functions and experienced
specialised doctors have ruled that such cessation is irreversible specialised doctors have ruled that such cessation is irreversible and the brain has started to disintegrateand the brain has started to disintegrate
In this case , it is permissible to take the person off resuscitationIn this case , it is permissible to take the person off resuscitationapparatus , even if the functions of some organs e.g heart, are stillapparatus , even if the functions of some organs e.g heart, are still
artificially maintainedartificially maintained
Persidangan AntarabangsaPersidangan Antarabangsa Amman Oct 1986 ( 1407)Amman Oct 1986 ( 1407)
Seseorang itu di sahkan mati dan segala urusan berkaitandengan kehendak Islam perlu di laksanakan apabila salah satudari dua perkara berikut berlaku:1. Apabila jantung dan pernafasan berhenti, dan di sahkan
oleh doktor bahawa ianya tidak dapat di pulihan2. Apabila semua fungsi otak telah berhenti dan doktor
yang mahir mengesahkan bahawa ianya tidak dapat di pulihkan dan otak telah mula hancur
Dalam keadaan tersebut, boleh lah di cabut mesin pernafasanwalaupun fungsi organ lain misalnya jantung masih berjalan
• 4. Singapore Islamic Religious Council, 1994.• 5. Indonesian Islamic Groups and Federation of
Islamic Medical Association.
6. Malaysia- the National Fatwa Council
endorsement by Med. Fac UM and MOH ,
1992
BUT no formal statement .
CONCLUSION
• Brain death is a clinical diagnosis.
• Brain death is certified only on patients in ICU, on ventilators.
• Causes of brain death :
- Primary / Secondary brain injury
• Brain death IS DEATH.Brain death IS DEATH.
• Brain death = Organ Transplant.