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Meta-Analysis
. 2017 Feb;108(2):161-168.
doi: 10.5935/abc.20170001. Epub 2017 Jan 16.

Non-Invasive Ventilation in Patients with Heart Failure: A Systematic Review and Meta-Analysis

[Article in English, Portuguese]
Affiliations
Meta-Analysis

Non-Invasive Ventilation in Patients with Heart Failure: A Systematic Review and Meta-Analysis

[Article in English, Portuguese]
Hugo Souza Bittencourt et al. Arq Bras Cardiol. 2017 Feb.

Abstract

Non-invasive ventilation (NIV) may perfect respiratory and cardiac performance in patients with heart failure (HF). The objective of the study to establish, through systematic review and meta-analysis, NIV influence on functional capacity of HF patients. A systematic review with meta-analysis of randomized studies was carried out through research of databases of Cochrane Library, SciELO, Pubmed and PEDro, using the key-words: heart failure, non-invasive ventilation, exercise tolerance; and the free terms: bi-level positive airway pressure (BIPAP), continuous positive airway pressure (CPAP), and functional capacity (terms were searched for in English and Portuguese) using the Boolean operators AND and OR. Methodological quality was ensured through PEDro scale. Weighted averages and a 95% confidence interval (CI) were calculated. The meta-analysis was done thorugh the software Review Manager, version 5.3 (Cochrane Collaboration). Four randomized clinical trials were included. Individual studies suggest NIV improved functional capacity. NIV resulted in improvement in the distance of the six-minute walk test (6MWT) (68.7m 95%CI: 52.6 to 84.9) in comparison to the control group. We conclude that the NIV is an intervention that promotes important effects in the improvement of functional capacity of HF patients. However, there is a gap in literature on which are the most adequate parameters for the application of this technique. Resumo A ventilação não invasiva (VNI) pode aperfeiçoar o desempenho cardíaco e respiratório dos pacientes com insuficiência cardíaca (IC). O objetivo do estudo é estabelecer, por meio de revisão sistemática e meta-análise, a influência da VNI na capacidade funcional (CF) de indivíduos com IC. Foi realizada uma revisão sistemática com meta-análise de estudos randomizados através da pesquisa nas bases de dados Biblioteca Cochrane, SciELO, Pubmed e PEDro, utilizando-se as palavras-chave: insuficiência cardíaca, ventilação não invasiva, tolerância ao exercício; e os termos livres: pressão positiva em dois níveis nas vias aéreas (BIPAP), pressão positiva contínua em vias aéreas (CPAP), CF e seus correlatos na língua inglesa, com a combinação dos operadores booleanos (AND e OR). A avaliação da qualidade metodológica se deu via escala de PEDro. Foram calculadas as médias ponderadas e o intervalo de confiança (IC) de 95%. Meta-análise foi realizada com software Review Manager versão 5.3 (Colaboração Cochrane). Foram incluídos quatro ensaios clínicos randomizados. Estudos individuais sugerem que a VNI contribuiu para melhora da CF. VNI resultou em melhora na distância do teste de caminhada de seis minutos (TC6) (68,7m 95% IC: 52,6 a 84,9) comparado ao grupo controle. Concluimos que a VNI é uma intervenção que promove efeitos importantes na melhora da CF de pacientes com IC. No entanto, há uma lacuna na literatura de quais são os parâmetros mais adequados para aplicação dessa técnica.

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Conflict of interest statement

Potential Conflict of Interest

No potential conflict of interest relevant to this article was reported.

Figures

Figure 1
Figure 1
Flowchart of the article selection process.
Figure 2
Figure 2
CPAP versus Control: 6MWT. Review Manager (RevMan). Version 5.2 The Cochrane Collaboration, 2013.

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