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Cochrane Database of Systematic Reviews

Síntomas neurológicos transitorios (SNT) después de la anestesia espinal con lidocaína versus otros anestésicos locales en pacientes adultos quirúrgicos: un metanálisis en red

Información

DOI:
https://doi.org/10.1002/14651858.CD003006.pub4Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 01 diciembre 2019see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Anestesia

Copyright:
  1. Copyright © 2019 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Autores

  • Patrice Forget

    Correspondencia a: Institute of Applied Health Sciences, Epidemiology Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK

    [email protected]

    Department of Anaesthesia, NHS Grampian, Aberdeen, UK

  • Josip A Borovac

    School of Medicine, University of Split, Split, Croatia

  • Elizabeth M Thackeray

    Department of Anesthesiology, University of Utah, Salt Lake City, USA

  • Nathan L Pace

    Department of Anesthesiology, University of Utah, Salt Lake City, USA

Contributions of authors

Undertaking manual searches: all authors.

Screening search results: all authors.

Screening retrieved papers against inclusion criteria: all authors.

Appraising quality of papers: all authors.

Abstracting data from papers: all authors.

Data management for the review: all authors.

Entering data into Review Manager 5 (Review Manager 2014): all authors.

Review Manager 5 statistical data (Review Manager 2014): all authors.

Interpretation of data: all authors.

Statistical inferences and network meta‐analysis: NLP.

Writing the review: all authors.

Guarantor for the review: PF.

Person responsible for reading and checking review before submission: PF.

Sources of support

Internal sources

  • EMT, USA.

    The author has no source of internal support to declare.

  • JAB, Croatia.

    The author has no source of internal support to declare.

  • NLP, USA.

    The author has no source of internal support to declare.

  • PF, UK.

    The author has no source of internal support to declare.

External sources

  • EMT, USA.

    The author has no source of external support to declare.

  • JAB, Croatia.

    The author has no source of external support to declare.

  • PF, UK.

    The author has no source of external support to declare.

  • NLP, USA.

    The author has no source of external support to declare.

Declarations of interest

PF: none.

JAB: none.

EMT: taught a 'safe sedation simulation' course to doctors and nurses as a consultant for Applied Medical Visualizations.

NLP: is a tenured professor (University of Utah) and has no conflicts of interest regarding the topic of this review. He has received payment for the development of educational presentations (Barash, Cullen, Toelting Clinical Anaesthesia 8th Edition) and provided consultancy (St Marks Hospital, Salt Lake City, UT; JB3 Bioscience Inc, Salt Lake City, UT; Elute, Salt Lake City, UT) on topics unrelated to the current review. He has received financial supplements to attend Cochrane meetings. He also has stocks and shares in companies who have no interests in the topic of this review (TIAA‐CREF, Fidelity, Vanguard, USAA, Morgan Stanley).

Acknowledgements

April 2019: we would like to thank Mike Bennett (Content Editor), Cathal Walsh (Statistical Editor), Joanne Guay (Peer Reviewer), Janet Wale (Consumer Editor), Janne Vendt (Information Specialist), Teo Quay (Managing Editor), and Andrew Smith (Co‐ordinating Editor) for their help and editorial advice during the preparation of this systematic review. We also would like to thank Jane Cracknell (Managing Editor at the time of the review) for her help and advice. Finally, we thank Dimitris Mavridis who commented on an earlier draft.

November 2008: we would like to thank Prof Michael Bennett (Content Editor) and Dr Helen Worthington (Statistical and Co‐ordinating Editor Cochrane Oral Health Group) for editing our updated review (Zaric 2009).

We would like to acknowledge the contribution of Yodying Punjasawadwong and Christian Christiansen to our original review (Zaric 2005). Dr Punjasawadwong helped with the literature search, evaluation, and construction of tables. Dr Christiansen helped with the evaluation of literature and revision of the text.

We would also like to thank Dr Peter Choi and Dr Helen Worthington for editing our original review (Zaric 2005), and acknowledge and thank Dr Janet Wale for her consumer synopsis. Her efforts greatly contributed to the editorial process of the review.

Version history

Published

Title

Stage

Authors

Version

2019 Dec 01

Transient neurological symptoms (TNS) following spinal anaesthesia with lidocaine versus other local anaesthetics in adult surgical patients: a network meta‐analysis

Review

Patrice Forget, Josip A Borovac, Elizabeth M Thackeray, Nathan L Pace

https://doi.org/10.1002/14651858.CD003006.pub4

2009 Apr 15

Transient neurologic symptoms (TNS) following spinal anaesthesia with lidocaine versus other local anaesthetics

Review

Dusanka Zaric, Nathan Leon Pace

https://doi.org/10.1002/14651858.CD003006.pub3

2005 Oct 19

Transient neurologic symptoms (TNS) following spinal anaesthesia with lidocaine versus other local anaesthetics

Review

Dusanka DZ Zaric, Christian CC Christiansen, Nathan Leon Pace, Yodying Punjasawadwong

https://doi.org/10.1002/14651858.CD003006.pub2

2003 Apr 22

Transient neurologic symptoms (TNS) following spinal anaesthesia with lidocaine versus other local anaesthetics

Review

Dusanka DZ Zaric, Christian CC Christiansen, Nathan Leon Pace, Yodying YP Punjasawadwong

https://doi.org/10.1002/14651858.CD003006

Differences between protocol and review

We made the following changes to the published review (Zaric 2009).

  • Changed the title to: Transient neurological symptoms (TNS) following spinal anaesthesia with lidocaine versus other local anaesthetics in adult surgical patients.

  • Changed authors to: Forget P, Borovac JA, Thackeray EM, Pace NL.

  • Updated the inclusion criteria for studies to: two or more treatment arms that used a distinct local anaesthetic (irrespective of the concentration and baricity of the solution) for spinal anaesthesia in preparation for surgery.

  • Added network meta‐analysis.

  • Incorporated GRADE assessments.

  • Updated the review according to the MECIR standards.

Keywords

MeSH

PICO

Population
Intervention
Comparison
Outcome

El uso y la enseñanza del modelo PICO están muy extendidos en el ámbito de la atención sanitaria basada en la evidencia para formular preguntas y estrategias de búsqueda y para caracterizar estudios o metanálisis clínicos. PICO son las siglas en inglés de cuatro posibles componentes de una pregunta de investigación: paciente, población o problema; intervención; comparación; desenlace (outcome).

Para saber más sobre el uso del modelo PICO, puede consultar el Manual Cochrane.

Forest plot of comparison: 1 Lidocaine versus other local anaesthetic, outcome: 1.1 Transient neurological symptoms.
Figuras y tablas -
Figure 1

Forest plot of comparison: 1 Lidocaine versus other local anaesthetic, outcome: 1.1 Transient neurological symptoms.

Network meta‐analysis plot of interactions among included studies displayed for a random‐effects, risk ratio model, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Each node represents an individual local anaesthetic. The node size is proportional to the number of studies.
 The node colours are determined by the individual study 'Risk of bias' assessment (green: no concerns; yellow: some concerns; red: major concerns).
 The width of the edges is proportional to the inverse variance of the effect size. The edge colours reflect the average risk of bias. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.
Figuras y tablas -
Figure 2

Network meta‐analysis plot of interactions among included studies displayed for a random‐effects, risk ratio model, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Each node represents an individual local anaesthetic. The node size is proportional to the number of studies.
The node colours are determined by the individual study 'Risk of bias' assessment (green: no concerns; yellow: some concerns; red: major concerns).
The width of the edges is proportional to the inverse variance of the effect size. The edge colours reflect the average risk of bias. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.

Risk of bias (RoB) assessment among studies included in the network meta‐analysis with direct effect estimation is displayed, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Direct RoB was determined by the average RoB assigned to each particular network interaction. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.
Figuras y tablas -
Figure 3

Risk of bias (RoB) assessment among studies included in the network meta‐analysis with direct effect estimation is displayed, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Direct RoB was determined by the average RoB assigned to each particular network interaction. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.

Contributions of indirect and mixed effects in the network meta‐analysis, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; NMA: network meta‐analysis; prilo: prilocaine; pro: procaine; ropi: ropivacaine
Figuras y tablas -
Figure 4

Contributions of indirect and mixed effects in the network meta‐analysis, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; NMA: network meta‐analysis; prilo: prilocaine; pro: procaine; ropi: ropivacaine

Analysis of imprecision among studies included in the network meta‐analysis, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.
Figuras y tablas -
Figure 5

Analysis of imprecision among studies included in the network meta‐analysis, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.

Heterogeneity assessment in network meta‐analysis displaying confidence and prediction intervals, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.
Figuras y tablas -
Figure 6

Heterogeneity assessment in network meta‐analysis displaying confidence and prediction intervals, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.

Summary of risk of bias assigned to studies included in the network meta‐analysis across six domains: study limitations, imprecision, heterogeneity, incoherence, indirectness, publication bias, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Output was created with CINeMA software. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.
Figuras y tablas -
Figure 7

Summary of risk of bias assigned to studies included in the network meta‐analysis across six domains: study limitations, imprecision, heterogeneity, incoherence, indirectness, publication bias, regarding the risk of transient neurological symptoms following spinal anaesthesia with lidocaine versus other local anaesthetics in adults undergoing surgery. Output was created with CINeMA software. bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine; ropi: ropivacaine.

Study selection flow diagram corresponding to the last search update, up to November 2018.
Figuras y tablas -
Figure 8

Study selection flow diagram corresponding to the last search update, up to November 2018.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 9

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 10

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Comparison 1 One local anaesthetic versus a different local anaesthetic, Outcome 1 Presence of any transient neurological symptoms.
Figuras y tablas -
Analysis 1.1

Comparison 1 One local anaesthetic versus a different local anaesthetic, Outcome 1 Presence of any transient neurological symptoms.

Summary of findings for the main comparison. Risk of transient neurological symptoms with spinal lidocaine compared to other local anaesthetic in adults undergoing surgery

Risk of transient neurological symptoms (TNS) with spinal lidocaine compared to other local anaesthetics in adults undergoing surgerya

Patient or population: adult undergoing surgery

Settings: hospital or ambulatory surgery setting (Belgium, Brazil, Canada, Denmark, Egypt, Finland, Iran, Italy, Lebanon, Nepal, the Netherlands, Norway, Spain, Switzerland, Turkey, USA)

Intervention: spinal lidocaine

Comparison: other local anaesthetics as indicated

Outcomes

Anticipated absolute effectsb (95% CI)

Relative effect (95 CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with lidocaine

Risk difference with the other local anaesthetic

Presence of any TNSlidocaine vs bupivacaine

Follow‐up: range 1–30 days

210 per 1000
 

176 fewer per 1000 (191 fewer to 151 fewer)

RR 0.16

(0.09 to 0.28)
 

1220 (12 RCTs)
 

⊕⊕⊕⊝

Moderatec
 

Bupivacaine probably reduced the risk of TNS compared to lidocaine.

Presence of any TNS – lidocaine vs 2‐chloroprocaine

Follow‐up: range 1–7 days

106 per 1000
 

97 fewer per 1000 (105 fewer to 54 more)
 

RR 0.09

(0.01 to 1.51)
 

94 (2 RCTs)
 

⊕⊕⊝⊝

Lowc,d
 

2‐chloroprocaine may have resulted in no difference in the risk of TNS compared to lidocaine.

Presence of any TNS – lidocaine vs levobupivacaine

Follow‐up: range 2–7 days

183 per 1000
 

159 fewer per 1000 (180 fewer to 57 fewer)
 

RR 0.13

(0.02 to 0.69)
 

120 (2 RCTs)
 

⊕⊕⊝⊝
Lowe,f
 

Levobupivacaine may have reduced the risk of TNS compared to lidocaine.
 

Presence of any TNS – lidocaine vs mepivacaine

Follow‐up: range 1–5 days

95 per 1000

1 more per 1000 (78 fewer to 457 more)

RR 1.01

(0.18 to 5.82)
 

274 (4 RCTs)

⊕⊝⊝⊝

Very lowd,e,f

Mepivacaine may have resulted in no difference in the risk of TNS compared to lidocaine but the evidence was very uncertain.
 

Presence of any TNS – lidocaine vs prilocaine

Follow‐up: range 1–5 days

127 per 1000
 

104 fewer per 1000 (118 fewer to 65 fewer)
 

RR 0.18

(0.07 to 0.49)

429 (4 RCTs)
 

⊕⊕⊕⊝

Moderatec
 

Prilocaine probably reduced the risk of TNS compared to lidocaine.

Presence of any TNS – lidocaine vs procaine

Follow‐up: range 2–3 days

292 per 1000
 

251 fewer per 1000 (281 fewer to 140 fewer)
 

RR 0.14

(0.04 to 0.52)
 

130 (2 RCTs)
 

⊕⊕⊕⊝

Moderatef
 

Procaine probably reduced the risk of TNS compared to lidocaine.
 

Presence of any TNS – lidocaine vs ropivacaine

Follow‐up: range 2–7 days

200 per 1000
 

180 fewer per 1000 (198 fewer to 44 fewer)
 

RR 0.10

(0.01 to 0.78)
 

90 (2 RCTs)
 

⊕⊕⊝⊝

Lowc,e
 

Ropivacaine may have reduced the risk of TNS compared to lidocaine.

CI: confidence interval; TNS: transient neurological symptoms; RCT: randomized controlled trial; RR: risk ratio.

GRADE Working Group grades of evidence
High quality: further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: we are very uncertain about the estimate.

a'Summary of findings' table is based on pair‐wise meta‐analysis (Figure 1). Results of the network meta‐analysis are presented in Table 2; Table 3; Table 4 and Figure 2; Figure 3; Figure 4; Figure 5; Figure 6; Figure 7.
bThe risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
cDowngraded one level due to limitations in the design and implementation.
dDowngraded one level due to high probability of publication bias.
eDowngraded one level due to imprecision of results.
fDowngraded one level due to unexplained heterogeneity or inconsistency of results.

Figuras y tablas -
Summary of findings for the main comparison. Risk of transient neurological symptoms with spinal lidocaine compared to other local anaesthetic in adults undergoing surgery
Table 1. Studies reporting transient neurological symptoms after intrathecal lidocaine

Study ID

TNS #/N (%)

Pain score (0–10)

TNS duration

Therapy

Aouad 2001

0/100 (0)

Breebaart 2003

3/30 (10)

Not tallied

1 day

Not described

Casati 2007

5/15 (33)

Not tallied

Up to 7 days

NSAIDs

de Weert 2000

7/35 (20)

Day 1 mean VPS 5.3 (range 2–8)

Maximum duration 3 days

Not described

Etezadi 2013

85/135 (63)

Mean VAS 6–7

Maximum duration 5 days

NSAIDs

Fanelli 2009

6/15 (40)

Not tallied

Resolved within 7 days

Not described

Gozdemir 2010

8/30 (27)

Median VPS 3 (range 1–6)

Resolved within 7 days

Not described

Hampl 1995a

9/28 (32)

Not tallied

Maximum duration 4 days

Not described

Hampl 1998

9/30 (30)

Mean maximum VAS 3.75

Maximum duration 2 days

Not described

Ali Hassan 2015

0/25 (0)

Hodgson 2000

11/35 (31)

Mean VPS 5

Mean duration 2 days

Not described

Imbelloni 2010

0/75 (0)

Keld 2000

9/35 (26)

Mean VPS 3.5 (range 2–8)

Maximum duration 4 days

Not described

Le Truong 2001

8/30 (27)

Not tallied

Unspecified

Not described

Liguori 1998

6/27 (22)

Not tallied

Maximum duration 5 days

NSAIDs

Martinez‐Bourio 1998

4/98 (4)

Not tallied

Maximum duration 10 days

NSAIDs

Østgaard 2000

7/49 (14)

VPS range 5–9.5

Maximum duration 3 days

Not described

Pawlowski 2012

0/40 (0)

Philip 2001

1/30 (3)

Maximum VAS 3

Maximum duration 2 days

Not described

Pollock 1996

16/107 (15)

Mean VPS 6.2 (range 1–9)

Maximum duration 4 days

NSAIDs and opioids

Pradhan 2010

0/26 (0)

Salazar 2001

1/40 (3)

Maximum VAS 9–10

Maximum duration 1 day

NSAIDs

Salmela 1998

6/30 (20)

Moderate pain

Maximum duration 1 day

NSAIDs and opioids

Teunkens 2016

0/32 (0)

N: number of participants; NSAIDs: non‐steroidal anti‐inflammatory drugs; TNS: transient neurological symptoms; VAS: visual analogue scale; VPS: verbal pain scale.

Figuras y tablas -
Table 1. Studies reporting transient neurological symptoms after intrathecal lidocaine
Table 2. Network meta‐analysis, random‐effects model

Treatment

RR

95% CI

95% PI

bupi

0.19

0.12 to 0.29a

0.12 to 0.30

chloro

0.18

0.02 to 1.53

0.02 to 1.75

levo

0.17

0.04 to 0.70a

0.04 to 0.77

mepi

1.54

0.76 to 3.12

0.73 to 3.27

prilo

0.23

0.10 to 0.55a

0.09 to 0.58

pro

0.17

0.05 to 0.56a

0.05 to 0.60

ropi

0.10

0.01 to 0.78a

0.01 to 0.89

bupi: bupivacaine; chloro: 2‐chloroprocaine; CI: confidence Interval; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; PI: prediction interval; prilo: prilocaine; pro: procaine, ropi: ropivacaine.
aNull hypothesis of no difference rejected.

Figuras y tablas -
Table 2. Network meta‐analysis, random‐effects model
Table 3. Split contributions of direct and indirect evidence in network meta‐analysis

Comparison

k

pro

NMA

95% CI

Direct

95% CI

Indirect

95% CI

RoR

95% CI

z

P value

bupi:chloro

1

0.32

1.08

0.12 to 9.63

0.92

0.02 to 44.90

1.17

0.08 to 1.6e+01

0.78

0.01 to 8.6e+01

–0.10

bupi:levo

0

0

1.15

0.26 to 5.18

1.15

0.26 to 5.2e+00

bupi:lido

12

1.00

0.19

0.12 to 0.29

0.19

0.13 to 0.30

0.00

0.00 to 1.8e+01

42.58

0.01 to 1.7e+05

0.89

0.38

bupi:mepi

1

0.09

0.12

0.05 to 0.28

0.04

0.00 to 0.71

0.14

0.06 to 3.2e‐01

0.32

0.02 to 5.9e+00

–0.77

0.44

bupi:prilo

1

0.09

0.83

0.31 to 2.17

0.33

0.01 to 7.87

0.91

0.33 to 2.5e+00

0.37

0.01 to 1.0e+01

–0.59

0.55

bupi:pro

0

0

1.10

0.32 to 3.83

1.10

0.32 to 3.8e+00

bupi:ropi

0

0

1.83

0.23 to 14.32

1.83

0.23 to 1.4e+01

chloro:levo

0

0

1.06

0.08 to 14.27

1.06

0.08 to 1.4e+01

chloro:lido

2

0.90

0.18

0.02 to 1.53

0.21

0.02 to 2.02

0.04

0.00 to 3.8e+01

4.88

0.00 to 6.3e+03

0.43

0.66

chloro:mepi

0

0

0.11

0.01 to 1.11

0.11

0.01 to 1.1e+00

chloro:prilo

0

0

0.76

0.07 to 7.82

0.76

0.07 to 7.8e+00

chloro:pro

0

0

1.02

0.09 to 11.87

1.02

0.09 to 1.2e+01

chloro:ropi

0

0

1.69

0.09 to 32.35

1.69

0.09 to 3.2e+01

levo:lido

2

1.00

0.17

0.04 to 0.70

0.17

0.04 to 0.71

0.00

0.00 to 1.3e+12

266.30

0.00 to 5.8e+17

0.31

0.76

levo:mepi

0

0

0.11

0.02 to 0.54

0.11

0.02 to 5.4e‐01

levo:prilo

0

0

0.72

0.13 to 3.87

0.72

0.13 to 3.9e+00

levo:pro

0

0

0.96

0.15 to 6.15

0.96

0.15 to 6.2e+00

levo:ropi

1

0.39

1.59

0.14 to 18.08

1.00

0.02 to 48.82

2.14

0.09 to 4.8e+01

0.47

0.00 to 6.8e+01

–0.30

0.76

mepi:lido

4

0.97

1.54

0.76 to 3.12

1.47

0.72 to 3.01

6.85

0.12 to 4.0e+02

0.22

0.00 to 1.3e+01

–0.73

0.47

prilo:lido

4

1.00

0.23

0.10 to 0.55

0.23

0.10 to 0.55

55983.54

0.00 to 4.5e+16

0.00

0.00 to 3.3e+06

–0.89

0.37

prop:lido

2

1.00

0.17

0.05 to 0.56

0.17

0.05 to 0.56

ropi:lido

2

1.00

0.10

0.01 to 0.78

0.10

0.01 to 0.78

0.91

0.00 to 4.9e+12

0.11

0.00 to 6.5e+11

–0.15

0.88

mepi:prilo

0

0

6.67

2.18 to 20.44

6.67

2.18 to 2.0e+01

mepi:pro

0

0

8.91

2.27 to 34.91

8.91

2.27 to 3.5e+01

mepi:ropi

0

0

14.78

1.75 to 124.74

14.78

1.75 to 1.2e+02

prilo:pro

0

0

1.34

0.31 to 5.74

1.34

0.31 to 5.7e+00

prilo:ropi

0

0

2.21

0.25 to 19.86

2.21

0.25 to 2.0e+01

prop:ropi

0

0

1.66

0.16 to 17.03

1.66

0.16 to 1.7e+01

bupi: bupivacaine; chloro: 2‐chloroprocaine; k: number of studies providing direct evidence; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; NA: not available; NMA: network meta‐analysis; pro: direct evidence proportion; prilo: prilocaine; pro: procaine, ropi: ropivacaine; RoR: ratio of ratios (direct versus indirect).
All RoRs cross the identity line.

Figuras y tablas -
Table 3. Split contributions of direct and indirect evidence in network meta‐analysis
Table 4. Tests of homogeneity of whole network, homogeneity within designs and homogeneity/inconsistency between designs

Q

df

P value

Total

18.4

21

0.6232

Within designs

14.8

13

0.3209

Between designs

3.6

8

0.8897

df: degrees of freedom; Q: Cochran's Q heterogeneity statistic.

Figuras y tablas -
Table 4. Tests of homogeneity of whole network, homogeneity within designs and homogeneity/inconsistency between designs
Table 5. P score (treatment ranking)

Treatment

P score

ropi

0.772

levo

0.657

pro

0.647

chloro

0.624

bupi

0.610

prilo

0.528

lido

0.138

mepi

0.022

bupi: bupivacaine; chloro: 2‐chloroprocaine; levo: levobupivacaine; lido: lidocaine; mepi: mepivacaine; prilo: prilocaine; pro: procaine, ropi: ropivacaine.

Figuras y tablas -
Table 5. P score (treatment ranking)
Comparison 1. One local anaesthetic versus a different local anaesthetic

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Presence of any transient neurological symptoms Show forest plot

24

Risk Ratio (IV, Random, 95% CI)

Subtotals only

1.1 Bupivacaine vs lidocaine

12

1220

Risk Ratio (IV, Random, 95% CI)

0.16 [0.09, 0.28]

1.2 2‐Chlorprocaine vs lidocaine

2

94

Risk Ratio (IV, Random, 95% CI)

0.09 [0.01, 1.51]

1.3 Levobupivacaine vs lidocaine

2

120

Risk Ratio (IV, Random, 95% CI)

0.13 [0.02, 0.69]

1.4 Mepivacaine vs lidocaine

4

274

Risk Ratio (IV, Random, 95% CI)

1.01 [0.18, 5.82]

1.5 Prilocaine vs lidocaine

4

429

Risk Ratio (IV, Random, 95% CI)

0.18 [0.07, 0.49]

1.6 Procaine vs lidocaine

2

130

Risk Ratio (IV, Random, 95% CI)

0.14 [0.04, 0.52]

1.7 Ropivacaine vs lidocaine

2

90

Risk Ratio (IV, Random, 95% CI)

0.10 [0.01, 0.78]

1.8 Bupivacaine vs mepivacaine

1

60

Risk Ratio (IV, Random, 95% CI)

0.04 [0.00, 0.71]

1.9 Bupivacaine vs prilocaine

1

60

Risk Ratio (IV, Random, 95% CI)

0.33 [0.01, 7.87]

1.10 Levobupivacaine vs ropivacaine

1

60

Risk Ratio (IV, Random, 95% CI)

0.0 [0.0, 0.0]

1.11 Bupivacaine vs 2‐chlorprocaine

1

67

Risk Ratio (IV, Random, 95% CI)

0.0 [0.0, 0.0]

Figuras y tablas -
Comparison 1. One local anaesthetic versus a different local anaesthetic