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Cochrane Database of Systematic Reviews

Simpatectomía lumbar versus prostanoides para la isquemia crítica de miembros inferiores debida a enfermedades arteriales periféricas no reconstruibles

Información

DOI:
https://doi.org/10.1002/14651858.CD009366.pub2Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 16 abril 2018see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Vascular

Copyright:
  1. Copyright © 2018 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Autores

  • Indrani Sen

    Correspondencia a: Vascular Surgery, Christian Medical College, Vellore, India

    [email protected]

  • Sunil Agarwal

    Surgery Unit II, Christian Medical College, Vellore, India

  • Prathap Tharyan

    Cochrane South Asia, Prof. BV Moses Center for Evidence‐Informed Health Care and Health Policy, Christian Medical College, Vellore, India

  • Rachel Forster

    Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK

Contributions of authors

IS: wrote protocol; trial selection, assessed quality, extracted data, performed meta‐analyses, interpreted results, and wrote the review manuscript.
SA: helped in writing the protocol; extracted data, interpreted results, and wrote the review manuscript.
PT: helped in writing the protocol; assessed quality, extracted data, performed meta‐analysis, and wrote the review manuscript.
RF: assisted in writing the review manuscript and performing the meta‐analysis.

Sources of support

Internal sources

  • Christian Medical College, Vellore, India.

    Salaries and infrastructure support for all authors

  • Prof. BV Moses & Indian Council of Medical Research (ICMR) Centre for Advanced Research in Evidence‐Informed Healthcare, India.

    Technical support for protocol development and review completion

External sources

  • Indian Council of Medical Research (ICMR), India.

    Funding for the Prof. BV Moses Centre for Evidence‐Informed Healthcare

  • Chief Scientist Office, Scottish Government Health Directorates, The Scottish Government, UK.

    The Cochrane Vascular editorial base is supported by the Chief Scientist Office.

Declarations of interest

IS: none known.
SA: none known.
PT: PT's institution has received funding from the Indian Council for Medical Research (ICMR): the Professor BV Moses Centre was funded by an educational grant from the Indian Council for Medical Research during the development of the protocol for this Cochrane Review.
RF: none known.

Acknowledgements

The protocol for this Cochrane Review is an output of a protocol development workshop conducted by the Prof. BV Moses and ICMR Centre for Advanced Research and Training in Evidence‐Informed Healthcare (Sen 2011).

Version history

Published

Title

Stage

Authors

Version

2018 Apr 16

Lumbar sympathectomy versus prostanoids for critical limb ischaemia due to non‐reconstructable peripheral arterial disease

Review

Indrani Sen, Sunil Agarwal, Prathap Tharyan, Rachel Forster

https://doi.org/10.1002/14651858.CD009366.pub2

2011 Oct 05

Lumbar sympathectomy versus prostanoids for critical limb ischaemia due to non‐reconstructable peripheral arterial disease

Protocol

Indrani Sen, Sunil Agarwal, Prathap Tharyan

https://doi.org/10.1002/14651858.CD009366

Differences between protocol and review

The outcome referring to walking distances has been modified to 'intermittent and absolute claudication distance (pain‐free walking distance and maximum walking distance, respectively)'. The two separate walking distances were clarified and 'increase in' was removed as we want to report any change in walking distances and not only if there is an increase.

The outcome of ankle brachial pressure index (ABPI) was edited to only 'ABPI' and 'improvement of' was removed as we intend to report on any ABPI findings and not only those that show improvement.

The protocol stated that an intention‐to‐treat (ITT) analysis would be performed as the primary analysis, where possible. After inclusion of only a single study with a high rate of unexplained dropouts, we chose to report a per protocol analysis as the primary analysis and include the ITT population in a sensitivity analysis.

We combined three individual primary outcomes of 'relief of rest pain', 'ulcer healing' and 'avoidance of major amputation' into a single outcome to reflect the outcome reported in the only included study, 'complete healing of ulcer without rest pain or major amputation'. We chose to do this after careful consideration in order to reduce a possible bias when interpreting the individual outcomes.

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.

Study flow diagram.
Figuras y tablas -
Figure 1

Study flow diagram.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 2

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 3

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

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 1 Complete ulcer healing without rest pain or major amputation at 24 weeks (per protocol analysis).
Figuras y tablas -
Analysis 1.1

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 1 Complete ulcer healing without rest pain or major amputation at 24 weeks (per protocol analysis).

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 2 Complete ulcer healing without rest pain or major amputation at 24 weeks (ITT/sensitivity analysis).
Figuras y tablas -
Analysis 1.2

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 2 Complete ulcer healing without rest pain or major amputation at 24 weeks (ITT/sensitivity analysis).

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 3 Mortality (per protocol analysis).
Figuras y tablas -
Analysis 1.3

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 3 Mortality (per protocol analysis).

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 4 Mortality (ITT/sensitivity analysis).
Figuras y tablas -
Analysis 1.4

Comparison 1 Prostanoids versus lumbar sympathectomy, Outcome 4 Mortality (ITT/sensitivity analysis).

Summary of findings for the main comparison. Prostanoids versus lumbar sympathectomy for critical limb ischaemia due to non‐reconstructable peripheral arterial disease

Prostanoids versus lumbar sympathectomy for critical limb ischaemia due to non‐reconstructable peripheral arterial disease

Participants or population: people with critical limb ischaemia due to non‐reconstructable peripheral arterial disease
Settings: 12 centres in Turkey
Intervention: prostanoids versus lumbar sympathectomy

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

Number of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Lumbar sympathectomy

Prostanoids

Complete ulcer healing without rest pain or major amputation (per protocol)
Clinical assessment
follow‐up: 24 weeks

526 per 1000

331 per 1000
(158 to 552)

RR 1.63
(1.30 to 2.05)

162
(1 study)

⊕⊕⊝⊝
low1

The outcomes 'relief of rest pain', 'complete ulcer healing' and 'avoidance of amputation' were all derived from a single outcome reported by Bozkurt 2006 as "complete healing without pain or major amputation". We chose to deviate from the review protocol and combine the outcomes, reflecting the single included study in order to limit potential bias.

Intermittent and absolute claudication distances

See comment

See comment

Not estimable

Not reported in included study.

Quality of life and functional status

See comment

See comment

Not estimable

Not reported in included study.

Adverse effects
Clinical assessment
follow‐up: 24 weeks

See comment

See comment

Not estimable

162
(1 study)

⊕⊕⊝⊝
low1

Adverse effects were not reported in a way that we could include in an analysis. Authors of the one included study reported more adverse effects in participants that received prostaglandin, but only one participant withdrew due to adverse effects.

Mortality
Clinical assessment
follow‐up: 24 weeks

See comment

See comment

Not estimable

162
(1 study)

⊕⊕⊝⊝
low1

No mortality reported in this trial.

*The basis for the assumed risk (e.g. the median control group risk across studies) is that the risk in the control group. The corresponding risk (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).
CI: confidence interval; 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.

1 Downgraded by two levels due to serious imprecision: study sample size was small with significant dropouts, and the data were only from a single trial.

Figuras y tablas -
Summary of findings for the main comparison. Prostanoids versus lumbar sympathectomy for critical limb ischaemia due to non‐reconstructable peripheral arterial disease
Comparison 1. Prostanoids versus lumbar sympathectomy

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Complete ulcer healing without rest pain or major amputation at 24 weeks (per protocol analysis) Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Complete ulcer healing without rest pain or major amputation at 24 weeks (ITT/sensitivity analysis) Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

3 Mortality (per protocol analysis) Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

4 Mortality (ITT/sensitivity analysis) Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 1. Prostanoids versus lumbar sympathectomy