perioperative death/safe anesthesia practice
TRANSCRIPT
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Perioperative Deathsafe anaesthesia practice
Dr.Mushtaq AhmadConsultant anesthetist
BVH,Bahawalpur
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ANESTHETIC DEATH
“Anaesthetic death” is often defined as the death of a patient who has had an anaesthetic, within 24 hours of the procedure. This is irrespective of the contribution of anaesthesia to the cause of death.
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The recent studies defined mortality associated with anesthesia as a death under anesthesia or as a result of anesthesia and death within 24hrs of an anesthetic procedure.
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Perioperative Death
It is potentially the most stressful event we experience as
anesthetists.
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My
is only on anesthetic death.
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Can be classified further into 4 groups according to the cause of the death
Journal of clinical pathology 1999 52 640-652 Roger. D. Start et al
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Directly caused by the disease for which anesthesia was being performed eg: aneurysmal rupture during aneurysmal repair
Caused by a disease other than for which anesthesia was being performed eg: CAD patient dying in a whipples resection
Resulting from a mishap of the surgery eg: rebleeding in Tonsillar surgeries
Resulting from a mishap of anesthesia eg: slipped ETT in cleft lip and palate surgery
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Incidence High in the developing countries High with emergency and complex surgeries High with age High with inadequate preop preparation Inappropriate postop care Lack of supervision
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Timing of perioperative mortality
Majority occurs in the postoperative(51%)Intraoperative(37%)and during induction(9%) of
anesthesia
Percentage
PostoperativeIntraoperativeInduction
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Safe Anaesthesia practice
IF WE KNOW THE CAUSE OF A COMPLICATION
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HUMAN ERROR
COMMUNICATION FAILURE
EQUIPMENT FAILURE
COEXISTING DISEASES
INEVITABLE COMLICATIONS
CAUSES OF COMPLICATIONS
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What is complication? Unexpected &
unwanted events 10% of all
anesthetics Death 5/million
anesthetics i-e 0.0005% in UK
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HUMAN ERRORPoor monitoringEquipment malfunctionOrganizational failurePoor trainingFatigueInadequate experiencePoor preparation of pt
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Prevention of human error
Good organization
Effective monitoring
Vigilance Action plans &
drills rehearsed previously
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COMMUNICATION FAILURE
Poor working relationship
Poor working condition Prevention
Team training & simulation-based training
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EQUIPMENT FAILURE Failure of
Breathing system Airway devices Gas supplies
Malfunction Infusion pumps
Prevention Ensure availability
& correct function of life saving & critical important equipments
alternative devices ..if primary device fail
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COEXISTING DISEASES
• Pt in fine balance of pathology & compensatory physiology
HTN,DM,IHD,ASTHAMA
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INEVITABLE COMPLICATIONS
Despite excellent surgical & anesthetic practice
Not always necessary to place the blame for a complication on a healthcare provider
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Complications of anaesthesia
Major Complications Minor complicationsCardiac arrest Peioperative MIAspiration Anaphylaxis Drug overdose/ toxicity Awareness Convulsion Nerve palsiesOrgan injury- Malignant hyperthermia
Airway obstruction Post op Nausea / vomitingSore throat Persistent sedation Haemodynamic instability Pneumonia Delirium Shivering Organ dysfunction- kidney/liverCognitive defect
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1. RESPIRATORY2. CARDIOVASCULAR3. NEUROROLOGICAL4. TEPERATURE5. DRUG REACTIONS6. REGIONAL ANESTHESIA7. INJURY
COMPLICATIONS
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1. Respiratory obstruction2. Laryngospasm3. Bronchospasm4. Complications associated with tracheal
intubation5. Hiccup6. Hypoxaemia7. Apnoea8. Hypercapnia9. Hypocapnia10. Pneumothorax11. atelactasis
RESPIRATORY
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1. Hypertension2. Hypotension3. Hypovolaemia4. Haemorrhage5. Disturbance of HR & Rhythm6. Myocardial ischemia7. Embolus
CARDIOVASCULAR
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SPINALEPIDURALPERIPHERAL NERVE BLOCK
REGIONAL ANESTHESIA
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Cutaneous & muscularPeripheral nerve During airway managementOpthalmicThermal & electrical Vascular tourniquets
INJURY
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1. Drug overdose/ adverse reaction2. Rhythm disturbances3. Peri-op MI4. Airway obstruction5. High spinal 6. Lack of vigilance 7. Bleeding 8. Over-dosage of inhalation agent9. Aspiration 10. Technical problem in anaesthesia system
10 common causes of cardiac arrest under anaesthesia
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1. Preoperative assessment, investigation and counselling of the patient
2. Preoperative checking of equipment and the assurance of backup equipment
3. The availability of an appropriately trained Assistant4. Preoperative consultation with more experienced
personnel, where necessary, regarding the Most appropriate anaesthetic technique
5. The use of appropriate monitoring techniques
AVOIDANCE OF COMPLICATIONS
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EXPERIENCE
Anesthetist’s responsibility to ensure HAS HE /SHE ADEQUATE TRAINING
FOR THE TASK PRESENTED ?IF NO
SENIOR ASSISTANCE HELP MUST BE SOUGHT
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RECORD KEEPING Vital sign & treatment
Trends in vital sign Early intervension
safer sharing of care between anesthetists Handover long cases Better team work
After the event investigations & learning,thus reducing complications
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REDUNDENT SYSTEMS Availability of at least two working
laryngoscopes Maintenance of 2 or more IV line if
blood loss expected Monitoring of expired volatile agent
conc . Alongwith depth of anesthesia monitorsMinimizes risk of awareness
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MONITORING
ASA & AAGBI have set minimum standard of intraoperative monitoring
Automatically activated alarm…. Values set by anesthetists
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SUMMARYProphylactic measures
Improve the preoperative assessment Provide preoperative preparations Improve the monitoring standards Provide balanced anesthesia Provide adequate post operative care Provide adequate supervision Proper auditing of critical incidents
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It should have been prevented by above
measures
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It had happened
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GENERAL MANAGEMENTRECORD KEEPING
MANAGEMENT OF COMPLICATIONS
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GENERAL MANAGEMENT
Provision of high FiO2 Assurance of adequate cardiac output
Cessation of perfusion …more rapid damage of organs than low level of oxygenation
Brain & heart most sensitive Liver & kidneys …potentially at risk
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1. Continual vigilance and
monitoring
2. Recognition of the evolution
of a problem
3. Creation of a list of differential
diagnoses
GENERAL MANAGEMENT
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4. Choice of a working diagnosis, which is either the most likely or the most
dangerous possibility
5. Treatment of the working
diagnosis
6. Assessment of the response of the problem to the
treatment administered
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7. Refinement of the list of differential diagnoses,
especially if the response has not been as expected
8. Confirmation or elimination of the choice of
working diagnosis; if the response to treatment has
been unexpected then replacement with a more likely working diagnosis is
indicated
9. Go to step 5 and repeat until the problem is resolved
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RECORD KEEPING & DOCUMENTATION
Trends in pt physiological data apparent only when charted
Generation of new DD of a problem with help of data
Data of an incident & complication important in preventing future repetition through education in department
Detailed record available to defend the practitioner
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Put every moment in black and white
The more detail, the better
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Documentations after the event
Prepare the accurate records Don’t alter the original notes Amendments and additions are recorded
separately Preoperative visit details are included Consent form and relevant investigation
reports are collected
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Documentation checklist When the patient was first seen by whom?
What was prescribed?
Investigation reports
Plan of anesthesia
Critical incidents
Remedial measures
Senior Help sought
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Dealing with the deceased
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Handling the relatives
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Be empathetic
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Communicating with relatives
Quiet comfortable room to sit Help from a senior Surgical and nursing colleague are
included Explain the serious complications Tried remedial measures detailed Answer all immediate questions
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Tug of war begins here
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Before Peri operative death
Surgeons and anesthesiologists
team up for a common goal
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After on table death
They usually fight and blame each other
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THANKS