regional anaesthesia (aurora) · pdf fileaustralian and new zealand registry of regional...
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Australian and New Zealand Registry of
Regional Anaesthesia (AURORA)
Overview of ResultsFirst 4000 procedures recorded to -
www.anaesthesiaregistry.orgJune 1st 2011 to February 2012
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Background• Australian and New Zealand Registry of
Regional Anaesthesia (AURORA)
• Objective: Determine the Quality and Safety of Peripheral Regional Anaesthesia
• Registry methodology - captures ‘native’ clinical behaviour
• Web interface: www.anaesthesiaregistry.org
• Blog: www.regionalanaesthesia.wordpress.com
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Clinical registries
• Complete inclusion of all eligible patients
• Capture ALL episodes of peripheral regional anaesthesia performed by ALL practitioners on ALL patients
• Reduce selection bias
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Patient characteristicsCharacteristic
Age (yr, mean ± SD) 58 ±19
Weight (kg, mean ± SD) 80 ± 19
Height (m, mean ± SD) 1.68
Gender (M/F), % 49/51
ASA status (I/II/III/IV), % 20/39/36/5
Diabetes, % 17
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Patient and practice characteristicsCharacteristic %
Cancer 6
Emergency 27
After Hours 13
Chronic analgesic use 18
Neurological disease 10
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Chronic analgesis use
Chronic analgesia n(%)
No 2544 (82)
Regular panadeine forte or similar
175 (6)
Regular oxydodone, opioid patches or similar
290 (9.4)
Antineuropathic drugs 63 (2)
Advanced therapy (pain pump) 11(0.3)
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Neurological diseaseNeurological disease n(%)
Peripheral neuropathy 73 (2.4)
Diabetic neuropathy 112 (3.6)
Demyelinating disease, Carpal tunnel syndrome, Ulnar neuritis 13 (0.3)
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Neurological diseaseNeurological disease n(%)
CVA with deficit 26 (0.8)
Post-surgical/traumatic 112 (0.9)
Spinal stenosis, Disc herneation, compressive
radiculopathy21 (1)
Other 91 (2.9)
Multiple diagnoses 10 (0.3)
None 2780 (90)
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Types of surgery
11%
4%
17%
2%
13%9%4%
25%
4%10%
1%0%
Shoulder, proximal, humerus, clavicleHumerus, elbowForearm, hand, wristThoraxAbdomenHipFemur, thighKneeLegAnkleNeckNot assoc. with surgery
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Block type (category) Interscalene
Supraclavicular
Infraclavicular
Axillary
Paravertebral
Trunk
Femoral
Sciatic
L.L./U.L. other0 7.5 15 22.5 30
%
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Timing n (%)
Preoperatively 3160 (79)
In immediate postoperative period 769 (19)
In postoperative period after departing PACU 23 (0.5)
Unrelated to surgery 29 (0.7)
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Block purpose n (%)
Intraoperative anaesthesia 123 (3)
Postoperative analgesia 2311 (58)
Both Anaesthesia and analgesia 1466 (37)
Postoperative analgesia inserted postoperatively
33 (0.8)
Analgesia unrelated to surgery 25 (0.6)
Rescue block 22 (0.5)
Chronic pain 3 (0.08)
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Block category-femoral
Operative region FNB%
Fascia iliaca
%
Total,n
Hip joint, neck of femur 44 56 209
Femur and thigh 74 26 126
Knee and popliteal region 97 3 874
Leg (below knee, above ankle) 93 7 46
Ankle foot/toes 88 12 17
Unrelated to surgery 100 2
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Block category-trunkOperative region = Abdominal cavity and wall
Block type n (%)
Transversus abdominis plane - posterior 465 (72)
Transversus abdominis plane - subcostal 100 (15)
Ilioinguinal/iliohypogastric 60 (9)
Rectus sheath 20 (3)
Genitofemoral 3 (0.4)
Intercostal 1 (0.1)
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Block category-paravertebral
Operative region Total,n (%)
Neck 2 (0.9)
Abdominal wall 16 (7)
Hip joint, neck of femur 135 (58)
Femur and thigh 12 (5)
Knee and popliteal region 6 (3)
Thorax 60 (26)
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59%
28%
7%6%
Ultrasound aloneUltrasound and Nerve stimulatorNerve stimulator (alone)Landmark
13%
50%
30%
7%
2006- 2008 2011- 2012
Technology used to located nerves
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Single-shot or catheter
76%
22%
2%
Single-shotCatheter (Non-stimulating)Stimulating Catheter
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Catheter by block category
0
12.5
25
37.5
50
ISB SCB ICB AX PVB Trunk Femoral Sciatic
Catheter as % of block type/category
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Barrier protection
If no catheter used
68%
12%
20%
Sterile GlovesGown, gloves and maskNon-sterile gloves
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Barrier protection
If catheter technique used
15%
84%
1%
Sterile GlovesGown, gloves and maskNon-sterile gloves
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Probe cover
72%
18%
10%
Sterile probe coverSimple dressing (e.g. Tegaderm)None
as a % of procedures performed with ultrasound
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Probe cover
97%
3%0%
Sterile probe coverSimple dressing (e.g. Tegaderm)None
as a % of catheter techniques performed with ultrasound
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Level of sedation (during block insertion)
21%
51%
4%
24%
Alert and AwakeLight sedationModerate sedationUnresponsive to noxious stimuli
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Level of sedation (as function of block category)
0
20
40
60
80
BP Paravert. Trunk Lower Limb
% Block category
BP = brachial plexus
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Level of sedationBlock category = Femoral
0
15
30
45
60
1 2 3 4
% Femoral
1, Alert2, Light sedation3, Moderate sedation4, Unresponsive
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Blocks performed with patent unresponsive as a function of hospital/practice
0
17.5
35
52.5
70
1 20 21 26 36 39 41 55 56 57 61 64
% Blocks unresponsive
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Local anaesthetic
85%
8%
4%4%
RopivacaineLignocaineBupivacaineLevobupivacaine
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Local anaesthetic dosage (ropivacaine), mg/kgLocal anaesthetic dosage (ropivacaine), mg/kg
Period Mean (SD)
2006 - 2008 2.0 ± 0.9
2008 - 2011 1.7 ± 0.9
2011 - 2012 1.4 ± 0.7
dosage for single blocks only
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30%
53%
13%3%1%
SuccessfulSuccessful-GA otherSuccessful-Neuraxial otherIncomplete block failureFailure
Success of block
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Immediate complications
Immediate Complications nMajor Local Anaesthetic toxicity 2Puncture of major artery or vein 18Haematoma 7Respiratory depression arrest 1Unintended paraesthesia 41Horner’s syndrome 2Intraneural injection 3Unintentional removal of catheter 3Wrong site block 1
First 4000 procedures - www.anaesthesiaregistry.orgJune 1st 2011 to February 23rd 2012
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PACU analgesia typeAnalgesia type %
None 60IV Opioid 19
Oral opioids 2Paracetamol 5
Tramadol 1LA bolus 2
Repeat block 0.7Preemptive 4
Outside surgical area 1
results from one hospital only
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Day 1 complicationsDay1 Complications nBlock failure requiring opioids 64Unintentional removal of catheter 9Readmission for poor pain relief 2Haematoma 5Motor block impairing mobilisation 33Technical problem, kink, leak, disconnection 33Pain, bruising at site 24Horner’s syndrome 4None 2719
First 4000 procedures - www.anaesthesiaregistry.orgJune 1st 2011 to February 23rd 2012
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Patient-rated outcomes
2%1%1%
17%
64%
15%
Completely dissatisfiedDissatisfiedNot satisfied, nor dissatisfiedSatisfiedCompletely satisfiedUnable to answer
Potential sample = 278233 (83%) completedResponses (%) based on completed questionnaires
Q 1. To what degree were you satisfied about the explanation of the regional anaesthesia (nerve block) procedure?
Hospital with high followup
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Patient-rated outcomes
2%2%
18%
63%
15%
Completely dissatisfiedDissatisfiedNot satisfied, nor dissatisfiedSatisfiedCompletely satisfiedUnable to answer
Potential sample = 278233 (83%) completedResponses (%) based on completed questionnaires
Q 2. To what degree were you satisfied about the amount of information about the regional anaesthesia (nerve block) procedure?
Hospital with high followup
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Patient-rated outcomes
53%25%
6%4%
12%
NoneMild - barely noticeableModerate - definitely noticeableSevere - very preoccupied by the symptomUnable to answer
Potential sample = 293246 (84%) completedResponses (%) based on completed questionnaires
Q 3. To what degree did you experience pain during the regional anaesthesia (nerve block) procedure?
Hospital with high followup
Tuesday, 27 March 12
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Patient-rated outcomes
33%
34%
20%
10% 4%
NoneMild - barely noticeableModerate - definitely noticeableSevere - very preoccupied by the symptomUnable to answer
Potential sample = 293247 (84%) completedResponses (%) based on completed questionnaires
Q 4. To what degree did you after the operation have pain?
Hospital with high followup
Tuesday, 27 March 12
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Patient-rated outcomes
80%
12%5%0%2%
NoneMild - barely noticeableModerate - definitely noticeableSevere - very preoccupied by the symptomUnable to answer
Potential sample = 293247 (84%) completedResponses (%) based on completed questionnaires
Q 5. To what degree did you after the operation have vomiting?
Hospital with high followup
Tuesday, 27 March 12
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Patient-rated outcomes
54%26%
11%4%4%
NoneMild - barely noticeableModerate - definitely noticeableSevere - very preoccupied by the symptomUnable to answer
Potential sample = 293247 (84%) completedResponses (%) based on completed questionnaires
Q 6. To what degree after the operation, did numbness or heaviness of the anaesthetised limb or body part bother you?
Hospital with high followup
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Patient-rated outcomes
19%
37%
19%
17%
7%
NoneMild - barely noticeableModerate - definitely noticeableSevere - very preoccupied by the symptomUnable to answer
Potential sample = 293247 (84%) completedResponses (%) based on completed questionnaires
Q 7. When the numbness/heaviness related to the nerve block wore off, how much pain did you experience?
Hospital with high followup
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Patient-rated outcomes
13%
26%
35%
19%
7%
NoneMild - barely noticeableModerate - definitely noticeableSevere - very preoccupied by the symptomUnable to answer
Potential sample = 897371 (41%) completedResponses (%) based on completed questionnaires
Q 7. When the numbness/heaviness related to the nerve block wore off, how much pain did you experience?
Hospital with lower followup rate
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Patient-rated outcomes
1%1%
21%
64%
12%
Completely dissatisfiedDissatisfiedNot satisfied, nor dissatisfiedSatisfiedCompletely satisfiedUnable to answer
Potential sample = 293246 (84%) completedResponses (%) based on completed questionnaires
Q 8. To what degree did your anaesthetist show undestanding for your situation?
Hospital with high followup
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Patient-rated outcomes
1%1%17%
66%
15%
Completely dissatisfiedDissatisfiedNot satisfied, nor dissatisfiedSatisfiedCompletely satisfiedUnable to answer
Potential sample = 293246 (84%) completedResponses (%) based on completed questionnaires
Q 9. To what degree did your anaesthetist pay attention to complaints like pain and discomfort?
Hospital with high followup
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Patient-rated outcomes
1%17%
67%
15%
Completely dissatisfiedDissatisfiedNot satisfied, nor dissatisfiedSatisfiedCompletely satisfiedUnable to answer
Potential sample = 293246 (84%) completedResponses (%) based on completed questionnaires
Q 10. To what degree did your anaesthetist pay attention to your questions?
Hospital with high followup
Tuesday, 27 March 12
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Patient-rated outcomes
83%
7%
10%
Yes NoUnable to answer
Potential sample = 280240 (86%) completedResponses (%) based on completed questionnaires
Repeat OK. Were you to require a similar operation again, would you be happy to have the same type of a regional anaesthetic again?
Hospital with high followup
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Follow-up methods
74%
18%
2%2%
3%
Phone Ward visitHistory review Clinic visitLetter
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Follow-up rates
91%
1%
0%
1%2%
5%
SuccessfulDementiaDeceasedLanguageOtherUnsure
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Pain at Delayed Follow-up
45%
37%
15%2%
NoneMild - barely noticableModerate - definitely noticableSevere -definitely preoccupied by the symptom
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Delayed Complications n
Neuropathy consistent with nerve/plexus blockde 3
Postoperative neurological symptom 131Pain/bruising at injection site 37Infection 13Specific mononeuropathy 3
Neurology outside the nerve/plexus region 14
Postoperative neuropathy unrelated to RA 15
Neurology (surgery) 80
None 2581
First 4000 procedures - www.anaesthesiaregistry.orgJune 1st 2011 to February 23rd 2012
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End of AURORA overview
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