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Meta-Analysis
. 2016 Aug 30;17(1):373.
doi: 10.1186/s12891-016-1231-4.

The efficacy of preoperative administration of gabapentin/pregabalin in improving pain after total hip arthroplasty: a meta-analysis

Yingdelong Mao  1 , Lianguo Wu  1 , Weiguo Ding  2
Affiliations
Meta-Analysis

The efficacy of preoperative administration of gabapentin/pregabalin in improving pain after total hip arthroplasty: a meta-analysis

Yingdelong Mao et al. BMC Musculoskelet Disord. .

Abstract

Background: The purpose of this systematic review and meta-analysis of randomised controlled trials (RCTs) was to evaluate the pain control by gabapentin or pregabalin administration versus placebo after total hip arthroplasty (THA).

Methods: In January 2016, a systematic computer-based search was conducted in the Medline, Embase, PubMed, CENTRAL (Cochrane Controlled Trials Register), Web of Science and Google databases. This systematic review and meta-analysis were performed according to the PRISMA statement criteria. The primary endpoint was the cumulative morphine consumption and visual analogue scale (VAS) scores at 24 and 48 h with rest or mobilisation. The complications of vomiting, nausea, dizziness and pruritus were also compiled to assess the safety of gabapentin and pregabalin. Stata 12.0 software was used for the meta-analysis. After testing for publication bias and heterogeneity across studies, the data were aggregated for random-effects modelling when necessary.

Results: Seven studies involving 769 patients met the inclusion criteria. The meta-analysis revealed that treatment with gabapentin or pregabalin can decrease the cumulative morphine consumption at 24 h (mean difference (MD) = -7.82; 95 % CI -0.95 to -0.52; P < 0.001) and 48 h (MD = -6.90; 95 % CI -0.95 to -0.57; P = 0.118). Gabapentin or pregabalin produced no better outcome than placebo in terms of VAS score with rest at 24 h (SMD = 0.15; 95 % CI -0.17 to -0.48; P = 0.360) and with rest at 48 h (SMD = 0.22; 95 % CI -0.25 to 0.69; P = 0.363). There was no statistically significant difference between the groups with respect to the VAS score at 24 h postoperatively (SMD = 0.46; 95 % CI -0.19 to 1.11; P = 0.164) and at 48 h postoperatively (SMD = 1.15; 95 % CI -0.58 to 2.89; P = 0.193). Gabapentin decreased the occurrence of nausea (relative risk (RR), 0.49; 95 % CI 0.27-0.92, P = 0.025), but there was no significant difference in the incidence of vomiting, dizziness and pruritus.

Conclusions: On the basis of the current meta-analysis, gabapentin or pregabalin can decrease the cumulative morphine consumption and decrease the occurrence of nausea; however, further trials are needed to assess the efficacy of pain control by gabapentin or pregabalin.

Keywords: Gabapentin; Meta-analysis; Pregabalin; Total hip replacement.

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Figures

Fig. 1
Fig. 1
The flow diagram of the included studies
Fig. 2
Fig. 2
The detailed bias summary of each study
Fig. 3
Fig. 3
The bias summary concluded in the above graph
Fig. 4
Fig. 4
Begg’s funnel plot with pseudo 95 % CI
Fig. 5
Fig. 5
The forest plot of occurrence of vomiting between the two groups
Fig. 6
Fig. 6
The forest plot of occurrence of nausea between the two groups
Fig. 7
Fig. 7
The forest plot of occurrence of dizziness between the two groups
Fig. 8
Fig. 8
The forest plot of occurrence of pruritus between the two groups
See this image and copyright information in PMC

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