CSE for labour analgesiaanaesthesiaconference.kiev.ua/materials_2008/0014_Roshan...Regional labour...
Transcript of CSE for labour analgesiaanaesthesiaconference.kiev.ua/materials_2008/0014_Roshan...Regional labour...
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CSE for labour analgesia
Roshan Fernando: University College Hospital, London
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Lecture outlineCSE labour analgesia:
indications / technique
advantages / disadvantages
ambulation
recent developments
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Techniques for labour analgesia
Epidural catheter
Single shot spinal
Spinal microcatheter
Combined spinal epidural (CSE)
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Epidural
Slow onset time (15 min)
Loading dose
low dose mixture: bupivacaine / fentanyl
Maintenance regimen
low dose mixture: bupivacaine / fentanyl
bolus, continuous infusion, PCEA, automatic
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Combined spinal epidural
(spinal) Needle-through-Needle (epidural)
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Indications for CSE
Labour pain
early
late / 2nd stage √
PG induction / oxytocin
Rapid delivery / difficult (OP position)
Failed regional block
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Low dose CSE (labour)
rapid analgesia
sacral analgesia
advanced labourmaternal distress
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Typical CSE regimenSpinal
2.5 mg bupivacaine + 5 - 15 µg fentanyl
3 ml of epidural low dose mixture
Epidural (low dose mix = 0.1 % bupiv + 2 µg/ml fentanyl)
intermittent bolus / continuous infusion
PCEA
automated intermittent bolus
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CSE vs. epiduralRegional labour analgesia
CSE Epidural
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CSE vs. epiduralRegional labour analgesia
CSE Epidural
Spinal starter
2.5 mg bupiv + 5-15 µg fentanyl
2.5 mg bupiv + 2.5 µg sufentanil
3ml low dose epidural mixture
Epidural topup
15ml low dose epidural mixture
0.1% bupiv + 2µg/ml fentanyl
0.0625% bupiv + 0.25µg/ml sufent
CI / PCEA / automatic bolus
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CSE vs. epiduralRegional labour analgesia
CSE Epidural
Spinal starter
2.5 mg bupiv + 25 µg fentanyl
2.5 mg bupiv + 2.5 µg sufentanil
3ml low dose epidural mixture
Epidural topup
15ml low dose epidural mixture
0.1% bupiv + 2µg/ml fentanyl
0.0625% bupiv + 0.25µg/ml sufent
CI / PCEA / automatic bolus
Epidural starter
15ml low dose epidural mixture
0.1% bupiv + 2µg/ml fentanyl
0.0625% bupiv + 0.25µg/ml sufent
Epidural topup
15ml low dose epidural mixture
CI / PCEA / automatic bolus
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Automatic epidural bolusYvonne Lim / Alex Sia – IJOA ’05 – Automated epidural bolus vs continuous infusion
A new way of giving epidural labor analgesia
Not: nurse bolus on demand / continuous infusion / PCEA
Automatic epidural bolus at regular intervals
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Lecture outlineCSE labour analgesia:
indications / technique
advantages / disadvantages
ambulation / safety
recent developments
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CSE: advantages / disadvantages
CSE
Advantages Disadvantages
Efficacy
speed, sacral blk
Obstetric outcome
↑ normal deliveries
Ambulation
↓ lower limb motor blk
Failure / technical issues
Headache (PDPH)
Testing of epidural catheter
Fetal bradycardia
Miscellaneousmeningitis, nerve damage,
metallic fragments, catheter migration
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CSE : advantages / disadvantages
CSE
Advantages Disadvantages
Efficacy
speed, sacral blk
Obstetric outcome
↑ normal deliveries
Ambulation
↓ lower limb motor blk
Failure / technical issues
Headache (PDPH)
Testing of epidural catheter
Fetal bradycardia
Miscellaneousmeningitis, nerve damage,
metallic fragments, catheter migration
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CSE : advantages / disadvantages
CSE
Advantages Disadvantages
Efficacy
speed, sacral blk
Obstetric outcome
↑ normal deliveries
Ambulation
↓ lower limb motor blk
Failure / technical issues
Headache (PDPH)
Testing of epidural catheter
Fetal bradycardia
Miscellaneousmeningitis, nerve damage, pruritus
metallic fragments, catheter migration
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CSE : advantages
Advantages
Efficacy Obstetric outcome Ambulation
fast onset time: < 5-10 min
↑ sacral analgesia
late 1st stage / 2nd stage
distressed mothers
failed epidural
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CSE : advantages
Advantages
Efficacy II Obstetric outcome Ambulation
epid LDM straight after spinal
↓ breakthrough pain
↓ bupivacaine requirements
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CSE : advantages
Advantages
Efficacy Obstetric outcome Ambulation
no differences !
normal deliveries
forceps / ventouse
caesarean section
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CSE : advantages
Advantages
Efficacy Obstetric outcome Ambulation
possible also with epidural
both ↓ motor block
safety issues
balance function
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Walking CSE /epidural
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Ambulation & obstetric outcome
NikodemCochrane ’93 / ’94
GuptaCochrane ’03
NageotteNEJM ’97
BloomNEJM ’98
CollisAnaesthesia ’99
TsenAnesthesiology ’99
KarrazInt J Gyne & Obst ’03
FreneaAnesth Analg ’04
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Ambulation & obstetric outcomeCollis ’99
CSE: ambulant vs. lying
Tsen ’99 CSE vs. epidural: ↑ cervical dilatation with CSE
Karraz ’03 / Vallejo ’01 epidural: ambulant vs. lying
Frenea ’04 epidural: prolonged ambulation
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Is walking safe after low dose
CSE / epidural ?
Are falls more likely?
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Balance function
somatosensory / visual / vestibular
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Can you prevent a fall with a test?
Lower limb motor powerstraight leg raising against resistance
Dorsal column functionproprioception / Romberg’s test
vibration
Partial knee bend
Step on/off foot stool
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CDP: Computerized Dynamic Posturography
Equitest Balance Master 6.1
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Jeremy Davies Tony Pickering
Andy McLeod
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Posturography: Balance Master 6.1
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Davies ’02 (Anesthesiology)
Pregnant control – no epidural
Balance Master 6.1
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Davies ’02 (Anesthesiology)
Labouring mother 30 min after CSE
Balance Master 6.1
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Davies ’02 (Anesthesiology)
50 non-pregnant controls vs 50 pregnant controls vs 50 pregnant after low dose CSE
Non-pregnant controls better scores in 6/13 tests vs pregnant and CSE gps
No difference between CSE and pregnant control !
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Summary: balance function after CSE
Pregnant women ↓ balance function
Labour CSE (spinal) does not affect balance
Epidural top-ups may ↓ balance function
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CSE : disadvantages
Disadvantages
Failure PDPH Epidural testing Fetal bradycardia
↓ with experience: < 0.4%
needle movement
inadequate drug dose
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CSE : disadvantages
Disadvantages
Failure PDPH Epidural testing Fetal bradycardia
headache risk < 0.1%
use pencilpoint needles
avoid multiple passes of spinal needle
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CSE : disadvantages
Disadvantages
Failure PDPH Epidural testing Fetal bradycardia
can an epidural catheter be tested after spinal ?
epidural test dose not reliable
use multi-hole epidural catheter
aspiration detects most iv catheters
fractionate high dose LA for caesarean section
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CSE : disadvantages
Disadvantages
Failure PDPH Epidural testing Fetal bradycardia
CSE = Epidural
CTG
Cord blood gases
Apgar scores
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CSE & fetal bradycardiaMardirosoff (2002)
metaanalysis
↑ fetal bradycardia with spinal opioids
Van de Velde (2004)
epidural vs. CSE – high / low dose sufentanil
↑ spinal opioid dose → ↑ fetal bradycardia (7µg sufent)
Rapid analgesia → epinephrine / norepinephrine imbalance → uterine hypertonus (?)
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CSE : disadvantages
Disadvantages
Miscellaneous
Meningitis Nerve damage Catheter migration Metallic fragments
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CSE : disadvantages
Disadvantages
Miscellaneous
Meningitis Nerve damage Catheter migration Metallic fragments
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CSE : disadvantages
Disadvantages
Miscellaneous
Meningitis Nerve damage Catheter migration Metallic fragments
spinal needle puncture
epidural catheter radius
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manufacturing “scratch”
Disadvantages
Miscellaneous
Meningitis Nerve damage Catheter migration Metallic fragments
CSE : disadvantages
spinal needle “scratch”
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CSE : disadvantages
Pruritus
↑ with spinal opioids
dose dependent
treatment available
Respiratory depression
very rare event / dose dependent
high dose sufentanil – early days of CSE!
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CSE - recent developments
Bupivacaine vs. levobupivacaine vs. ropivacaine
Camorcia ’05 / Van de Velde ’07
Effect of spinal injection volume
Parpaglioni ’05; ↑ injection vol → ↑ efficacy
CSE vs. epidural – analgesia outcomes
Thomas ’05; no difference
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CSE - recent developments
Bupivacaine vs. levobupivacaine vs. ropivacaine
Camorcia ’05 / Van de Velde ’07
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Bupiv vs. levo vs. ropivCamorcia
MLAD / ED50 study
potency: bupiv > levo > ropiv
Van de Velde
full dose response study (ED95 + ED50)
potency: bupiv > levo & ropiv
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CSE - recent developments
Bupivacaine vs. levobupivacaine vs. ropivacaine
Camorcia ’05 / Van de Velde ’07
Effect of spinal injection volume
Parpaglioni ’05
CSE vs. epidural outcomes
Thomas ’05
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CSE - spinal inj volume
Spinal levobupivacaine at different volumes (2.5, 5 & 10ml; n=93)
Up / down sequential allocation
↑ injection volume → ↓ MLAD
↑ vol → ↑ effect
Parpaglioni – Anesthesiology – Effect of different volumes of spinal levobup for labour
2.5 5 100
1
2
1.35
1.97
1.63
Spinal volume (ml)M
LAD
(mg)
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CSE - recent developments
Bupivacaine vs. levobupivacaine vs. ropivacaine
Camorcia ’05 / Van de Velde ’07
Effect of spinal injection volume
Parpaglioni ’05
CSE vs. epidural - outcomes
Thomas ’05
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CSE – outcome
CSE without spinal drug injection vs epidural catheter only technique
PCEA analgesia with low dose fent/bupiv
No group differences:
epidural catheter manipulation / replacement
unilateral blocks / analgesia quality
Thomas – Anesthesiology – Does dural puncture during CSE improve epid function?
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CSE – the future?
Epidurals for early labour
CSE
late labour / maternal distress
difficult delivery / failed epidural
Spinal volume effects
Analgesia maintenance (automated bolus)
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Thank you!