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Meta-Analysis
. 2004 Oct 18;2004(4):CD000483.
doi: 10.1002/14651858.CD000483.pub2.

Circulatory volume expansion therapy for aneurysmal subarachnoid haemorrhage

G J E Rinkel  1 , V L Feigin, A Algra, J van Gijn
Affiliations
Meta-Analysis

Circulatory volume expansion therapy for aneurysmal subarachnoid haemorrhage

G J E Rinkel et al. Cochrane Database Syst Rev. .

Abstract

Background: Secondary ischaemia is a frequent complication after aneurysmal subarachnoid haemorrhage (SAH), and responsible for a substantial proportion of patients with poor outcome after SAH. The cause of secondary ischaemia is unknown, but hypovolaemia and fluid restriction are important risk factors. Therefore, volume expansion therapy (hypervolaemia) is frequently used in patients with SAH to prevent or treat secondary ischaemia.

Objectives: To determine the effectiveness of volume expansion therapy for improving outcome in patients with aneurysmal SAH.

Search strategy: We searched the Cochrane Stroke Group Trials Register (last searched September 2003). In addition we searched MEDLINE (1966 to January 2004) and EMBASE (1980 to January 2004) and contacted trialists to identify further published and unpublished studies.

Selection criteria: All randomised controlled trials of volume expansion therapy in patients with aneurysmal SAH. We also sought controlled trials based on consecutive groups of patients quasi-randomly allocated to treatment or control group and included these in the analysis if the two groups were well comparable with regard to major prognostic factors.

Data collection and analysis: Two reviewers independently extracted the data and assessed trial quality. Trialists were contacted to obtain missing information.

Main results: We identified three trials. One truly randomised trial and one quasi-randomised trial with comparable baseline characteristics for both groups were included in the analyses. Volume expansion therapy did not improve outcome (Relative Risk (RR) 1.0; 95% Confidence Interval (CI) 0.5 to 2.2), nor the occurrence of secondary ischaemia (RR 1.1; 95% CI 0.5 to 2.2). Hypervolaemia tended to increase the rate of complications (RR 1.8; 95% CI 0.9 to 3.7) In another quasi-randomised trial, outcome assessment was done only at the day of operation (7 to 10 days after SAH). In the period before operation, treatment resulted in a reduction of secondary ischaemia (RR 0.33; 95% CI 0.11 to 0.99) and case fatality (RR 0.20; 95% CI 0.07 to 1.2).

Reviewers' conclusions: The effects of volume expansion therapy have been studied properly in only two trials of patients with aneurysmal SAH, with very small numbers. At present, there is no sound evidence for the use of volume expansion therapy in patients with aneurysmal SAH.

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Conflict of interest statement

None known

Figures

1.1
1.1. Analysis
Comparison 1 Poor outcome, Outcome 1 treatment started after occlusion of the aneurysm.
2.1
2.1. Analysis
Comparison 2 Case fatality, Outcome 1 treatment started after occlusion of the aneurysm.
3.1
3.1. Analysis
Comparison 3 Secondary ischaemia, Outcome 1 clinical signs of secondary ischaemia.
3.2
3.2. Analysis
Comparison 3 Secondary ischaemia, Outcome 2 infarct on CT/MR.
4.1
4.1. Analysis
Comparison 4 Rebleeding, Outcome 1 treatment started after occlusion of the aneurysm.
5.1
5.1. Analysis
Comparison 5 Complications, Outcome 1 treatment started after occlusion of the aneurysm.
See this image and copyright information in PMC

Update of

References

References to studies included in this review

CPMC {published data only}
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