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. 2015 Nov 6;2015(11):CD010882.
doi: 10.1002/14651858.CD010882.pub2.

Pharmacological interventions for unilateral spatial neglect after stroke

Gustavo José Luvizutto  1 , Rodrigo Bazan, Gabriel Pereira Braga, Luiz Antônio de Lima Resende, Silméia Garcia Z Bazan, Regina El Dib
Affiliations

Pharmacological interventions for unilateral spatial neglect after stroke

Gustavo José Luvizutto et al. Cochrane Database Syst Rev. .

Abstract

Background: Unilateral spatial neglect (USN) is characterized by the inability to report or respond to people or objects presented on the side contralateral to the lesioned side of the brain and has been associated with poor functional outcomes and long stays in hospitals and rehabilitation centers. Pharmacological interventions (medical interventions only, use of drugs to improve the health condition), such as dopamine and noradrenergic agonists or pro-cholinergic treatment, have been used in people affected by USN after stroke, and effects of these treatments could provide new insights for health professionals and policy makers.

Objectives: To evaluate the effectiveness and safety of pharmacological interventions for USN after stroke.

Search methods: We searched the Cochrane Stroke Group Trials Register (April 2015), the Cochrane Central Register of Controlled Trials (April 2015), MEDLINE (1946 to April 2015), the Cumulative Index to Nursing and Allied Health Literature (CINAHL) (1982 to April 2015), EMBASE (1980 to April 2015), PsycINFO (1806 to April 2015) and Latin American Caribbean Health Sciences Literature (LILACS) (1982 to April 2015). We also searched trials and research registers, screened reference lists, and contacted study authors and pharmaceutical companies (April 2015).

Selection criteria: We included randomized controlled trials (RCTs) and quasi-randomized controlled trials (quasi-RCTs) of pharmacological interventions for USN after stroke.

Data collection and analysis: Two review authors independently assessed risk of bias in the included studies and extracted data.

Main results: We included in the review two studies with a total of 30 randomly assigned participants. We rated the quality of the evidence as very low as the result of study limitations, small numbers of events, and small sample sizes, with imprecision in the confidence interval (CI). We were not able to perform meta-analysis because of heterogeneity related to the different interventions evaluated between included studies. Very low-quality evidence from one trial (20 participants) comparing effects of rivastigmine plus rehabilitation versus rehabilitation on overall USN at discharge showed the following: Barrage (mean difference (MD) 0.30, 95% confidence interval (CI) -0.18 to 0.78); Letter Cancellation (MD 10.60, 95% CI 2.07 to 19.13); Sentence Reading (MD 0.20, 95% CI -0.69 to 1.09), and the Wundt-Jastrow Area Illusion Test (MD -4.40, 95% CI -8.28 to -0.52); no statistical significance was observed for the same outcomes at 30 days' follow-up. In another trial (10 participants), study authors showed statistically significant reduction in omissions in the three cancellation tasks under transdermal nicotine treatment (mean number of omissions 2.93 ± 0.5) compared with both baseline (4.95 ± 0.8) and placebo (5.14 ± 0.9) (main effect of treatment condition: F (2.23) = 11.06; P value < 0.0001). One major adverse event occurred in the transdermal nicotine treatment group, and treatment was discontinued in the affected participant. None of the included trials reported data on several of the prespecified outcomes (falls, balance, depression or anxiety, poststroke fatigue, and quality of life).

Authors' conclusions: The quality of the evidence from available RCTs was very low. The effectiveness and safety of pharmacological interventions for USN after stroke are therefore uncertain. Additional large RCTs are needed to evaluate these treatments.

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Conflict of interest statement

Gustavo José Luvizutto: none known. Rodrigo Bazan: none known. Gabriel Pereira Braga: none known. Silméia Garcia Zanati Bazan: none known. Luiz Antônio de Lima Resende: none known. Regina El Dib: none known.

Figures

1
1
Study flow diagram.
2
2
Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
3
3
Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
1.1
1.1. Analysis
Comparison 1 Drug A + rehabilitation versus rehabilitation, Outcome 1 Overall USN at discharge.
1.2
1.2. Analysis
Comparison 1 Drug A + rehabilitation versus rehabilitation, Outcome 2 Overall USN at follow‐up.
1.3
1.3. Analysis
Comparison 1 Drug A + rehabilitation versus rehabilitation, Outcome 3 Disabilities.
1.4
1.4. Analysis
Comparison 1 Drug A + rehabilitation versus rehabilitation, Outcome 4 Daily life functions.
See this image and copyright information in PMC

Update of

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