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Miocardiopatia dilatada e o risco de AVC cardioembólico : uma revisão sistemática com meta-análise

Authors: Sousa, Catarina Mateus Paulo de;

Miocardiopatia dilatada e o risco de AVC cardioembólico : uma revisão sistemática com meta-análise

Abstract

O risco de embolia sistémica em doentes com miocardiopatia dilatada permanece desconhecido. Para responder a esta questão, realizámos uma revisão sistemática da literatura com meta-análise para avaliar o risco de acidente vascular cerebral (AVC) em doentes com miocardiopatia dilatada. Assim, realizámos uma pesquisa eletrónica nas bases de dados MEDLINE e EMBASE (até setembro de 2018). Incluímos adultos com miocardiopatia dilatada que foram avaliados relativamente a pelo menos um dos seguintes desfechos: AVC, AVC silencioso ou acidente isquémico transitório (AIT). O outcome primário foi a ocorrência de isquémia cerebral (AVC, AVC silencioso ou AIT). Após a exclusão de duplicados, analisamos 1124 artigos pelo título e resumo, 50 por texto integral, dos quais 6 foram incluídos na análise qualitativa e 2 na análise quantitativa. O número de doentes variou entre 40 a 290, com um total de 1020 em todos os estudos incluídos (944 com miocardiopatia dilatada e 76 controlos). A duração de seguimento foi desde 12 meses a 129 meses, 32% dos doentes incluídos eram do sexo feminino (n=328) e a idade média de todos os participantes foi de 59.6 anos. Os dois artigos que foram selecionados para a análise quantitativa tinham como outcome primário o AVC silencioso. A prevalência de AVC silencioso em 92 doentes com miocardiopatia dilatada foi de 31.4% (95% CI: 21.92-40.88) vs 3.6% (95% CI: 0-7.79) no grupo controlo. A meta-análise realizada demonstrou um risco significativamente superior de AVC silencioso em doentes com miocardiopatia dilatada em comparação com os controlos (OR 13.66, IC 95%:3.59-51.95, p < 0.001), com baixa heterogeneidade entre estudos (I2 = 0%). Em conclusão, doentes com miocardiopatia dilatada têm um risco aumentado de AVC silencioso. No entanto, não é possível concluir definitivamente qual o risco de AVC clínico ou acidente isquémico transitório, sendo necessários mais estudos para avaliar o risco de AVC cardioembólico em doentes com esta patologia.

There is controversy about the actual risk of systemic embolism associated with dilated cardiomyopathy (DCM). Therefore, we conducted a systematic review with meta-analysis in order to appraise the true risk of cardioembolic stroke in patients with DCM. We performed an electronic search through MEDLINE and EMBASE databases (until september 2018). Inclusion criteria were adult patients with dilated cardiomyopathy who were evaluated for one of the following endpoints: stroke, silent stroke or a transient ischemic attack. The primary outcome was the occurrence of cerebral ischaemia (silent stroke, stroke or transient ischaemic attack). After excluding duplicates, title and abstract screening included 1124 articles, 50 were assessed for full-text screening, with 6 being included for qualitative synthesis and 2 for quantitative syntheses. The number of patients enrolled in each study varied between 40 and 290, for a total of 1020 patients (944 with DCM and 76 controls). The duration of follow-up ranged from 12 months to 129 months, 32% were female (n=328) and the mean age of all participants was 59.6 years. Both the articles selected for the quantitative synthesis had silent stroke as primary outcome. The overall prevalence of stroke observed in 92 patients with DCM was 31.4% (95% CI: 21.92-40.88) vs 3.6% (95% CI: 0-7.79) in the control group. Pooled analysis showed a significant increase in the risk of stroke in patients with DCM (OR 13.66, 95% CI: 3.59-51.95, p < 0.001) with very low heterogeneity between studies’ estimates (I2 = 0%). In conclusion, patients with dilated cardiomyopathy have an increased risk of silent stroke. However, no conclusions can be definitely drawn on the risk of stroke or TIA in patients with DCM. Further studies are warranted to assess the true risk of cardioembolic stroke in patients with this condition.

Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2019

Country
Portugal
Related Organizations
Keywords

Acidente vascular cerebral, Neurologia, Domínio/Área Científica::Ciências Médicas, Miocardiopatia dilatada, AVC isquémico, AVC silencioso

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green