Making a Case for Regional Anaesthesia · Making a Case for Regional Anaesthesia The impact on...
Transcript of Making a Case for Regional Anaesthesia · Making a Case for Regional Anaesthesia The impact on...
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Making a Case for Regional Anaesthesia
The impact on patient centred and system centred outcomes
Alan MacfarlaneConsultant Anaesthetist, Glasgow Royal Infirmary, Scotland
Honorary Senior Lecturer, University of Glasgow
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Body text
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Disclosures
Consulting fees : Heron Therapeutics
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Outcomes and RA
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Risk vs benefit
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Variables
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• GA vs RA
Variables
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• GA vs RA
Variables
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BIS• Approx 50• Delirium 40%
BIS• ≥ 80• Delirium 19%
• GA vs RA
Variables
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BIS• Approx 50• Delirium 40%
BIS• ≥ 80• Delirium 19%
• GA vs RA
Variables
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• GA vs RA
• GA+RA vs GA alone
Variables
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• GA vs RA
• GA+RA vs GA alone
• Regional anaesthesia»Neuraxial versus PNB»Nerve localisation»Operator»Dose
Variables
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• Multiple variables– (Anaesthetic)– Patient– Procedure
Variables
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• Multiple variables– (Anaesthetic)– Patient– Procedure specific
• Serious adverse events are rare
Variables
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Outcomes
• What outcomes are important ?
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Outcomes
• What outcomes are important ?– Patient centred outcomes– Surgical/functional outcomes– Institutional outcomes
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Outcomes
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• Pain ?– Acute
Outcomes - patient
opioids
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• Pain ?– Acute
opioids
Rebound pain
Outcomes - patient
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• Pain– Acute– Chronic ?• Procedure specific
Outcomes - patient
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• Pain– Acute– Chronic ?• Procedure specific
Outcomes - patient
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• Pain– Acute– Chronic
• PONV ?
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery ?
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery
– Delirium – POCD
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery• Cancer recurrence ?
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery• Cancer recurrence ?
Volatiles have a negative effecton immune function
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery• Cancer recurrence ?
Outcomes - patient
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• Pain– Acute– Chronic
• PONV• Cognitive recovery quality• Cancer recurrence• Morbidity and Mortality ?
Outcomes - patient
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• How to study ?– RCTs– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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• How to study ?– RCTs– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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• How to study ?– RCTs – too small for mortality– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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• How to study ?– RCTs– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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• How to study ?– RCTs– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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Contemporary Data
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• How to study ?– RCTs– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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• How to study ?– RCTs– Meta-analysis– Retrospective databases– Prospective databases/registries
Mortality
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• Over 1 million patients– Contemporary data – 2010-2016
» GA versus central neuraxial block» GA and central neuraxial block vs GA alone» All operations combined
No difference in mortality
Mortality
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• CNB+GA vs GA reduced– Pulmonary complications (OR 0.84)– Thromboembolic events (OR 0.84)– Blood loss (OR 0.90)– Surgical site infections (OR 0.93)– Length of stay (-0.16 days)– ICU admissions (OR 0.77)
Morbidity
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• CNB alone vs GA reduced– Pulmonary complications (OR 0.84) (OR 0.38)– Thromboembolic events (OR 0.84) (OR 0.79)– Blood loss (OR 0.90) (OR 0.85)– Surgical site infections (OR 0.93) (OR 0.76)– Length of stay (-0.16 days) (OR 0.29)– ICU admissions (OR 0.77) (OR 0.50)
Morbidity
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• CNB alone vs GA reduced– Pulmonary complications (OR 0.84) (OR 0.38)– Thromboembolic events (OR 0.84) (OR 0.79)– Blood loss (OR 0.90) (OR 0.85)– Surgical site infections (OR 0.93) (OR 0.76)– Length of stay (-0.16 days) (OR 0.29)– ICU admissions (OR 0.77) (OR 0.50)
Morbidity
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10868 patients– 2003 to 2014– Less morbidity and mortality with CNB vs GA
NNT of 164
Targeting benefits ?
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• Increased odds of MI in combined GA/CNB– OR 1.184 (99% CI 1.01 - 1.37)– No difference in overall mortality
Morbidity
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Morbidity and Mortality
Peripheral nerve blocks ?
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Morbidity and Mortality
Peripheral nerve blocks ?
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Outcomes
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Outcomes
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Outcomes
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Outcomes
Procedure specific
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Outcomes
Procedure specific
Functional outcomes
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Orthopaedics
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Vascular
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Vascular
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NNT = 4
RA and AV fistula outcomes
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Outcomes
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• Length of stay (ERAS) ?
Outcomes - institution
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• Length of stay (ERAS)• Efficiency ?
Outcomes - institution
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• Length of stay (ERAS)• Efficiency ?– PACU bypass– Earlier discharge– Less unanticipated DSU admissions– ? More cases
Outcomes - institution
Block room ?
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• Length of stay (ERAS)• Efficiency• Environmental ?
Outcomes - institution
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• Length of stay (ERAS)• Efficiency• Environmental ?
Outcomes - institution
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Risk
Benefit
Outcomes - risk vs benefit
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Risk
Benefit
Safer blocks ?- ultrasound- more peripheral
Reduce side effects- hypotension
Not combined with GA or deep sedation ?
Outcomes - risk vs benefit
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Risk
Benefit
Increase block success- ultrasoundRight block for right patient
Safer blocks ?- ultrasound- more peripheral
Reduce side effects- hypotension
Not combined with GA or deep sedation ?
Outcomes - risk vs benefit
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The future ?
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Outcomes
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Outcomes
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• Negative correlation– Length of surgery– Opioid consumption
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QoR 40
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Material risk of RA cannot be eliminated– We are learning how to reduce it however
Increasing evidence RA does have some gains beyond acute pain– Some data is low/moderate quality– More work required with ‘better’ outcome measures
Gains more likely when RA used alone– Care when combining RA plus GA
Summary
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MCQ - 1
In large population outcome analyses, neuraxial combined with general anaesthesia appears to increase the risk of :A Pulmonary complicationsB Cardiac eventsC MortalityD Blood loss
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MCQ - 2
There is Level 1 (RCT) evidence that regional anaesthesia :A Reduces cancer recurrenceB Improves cognitive recoveryC Reduces surgical site infectionD Improves long term AV fistula survival