Intra-aortic balloon pump does not influence cerebral hemodynamics and neurological outcomes in high-risk cardiac patients undergoing cardiac surgery: an analysis of the IABCS trial

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art_CALDAS_Intraaortic_balloon_pump_does_not_influence_cerebral_hemodynamics_2019.PDF (1.06 MB)
Citações na Scopus
11
Tipo de produção
article
Data de publicação
2019
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
SPRINGEROPEN
Autores
PANERAI, Ronney B.
PASSOS, Rogerio H.
Citação
ANNALS OF INTENSIVE CARE, v.9, n.1, article ID 130, 11p, 2019
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Background The intra-aortic balloon pump (IABP) is often used in high-risk patients undergoing cardiac surgery to improve coronary perfusion and decrease afterload. The effects of the IABP on cerebral hemodynamics are unknown. We therefore assessed the effect of the IABP on cerebral hemodynamics and on neurological complications in patients undergoing cardiac surgery who were randomized to receive or not receive preoperative IABP in the 'Intra-aortic Balloon Counterpulsation in Patients Undergoing Cardiac Surgery' (IABCS) trial. Methods This is a prospectively planned analysis of the previously published IABCS trial. Patients undergoing elective coronary artery bypass surgery with ventricular ejection fraction <= 40% or EuroSCORE >= 6 received preoperative IABP (n = 90) or no IABP (n = 91). Cerebral blood flow velocity (CBFV) of the middle cerebral artery through transcranial Doppler and blood pressure through Finometer or intra-arterial line were recorded preoperatively (T1) and 24 h (T2) and 7 days after surgery (T3) in patients with preoperative IABP (n = 34) and without IABP (n = 33). Cerebral autoregulation was assessed by the autoregulation index that was estimated from the CBFV response to a step change in blood pressure derived by transfer function analysis. Delirium, stroke and cognitive decline 6 months after surgery were recorded. Results There were no differences between the IABP and control patients in the autoregulation index (T1: 5.5 +/- 1.9 vs. 5.7 +/- 1.7; T2: 4.0 +/- 1.9 vs. 4.1 +/- 1.6; T3: 5.7 +/- 2.0 vs. 5.7 +/- 1.6, p = 0.97) or CBFV (T1: 57.3 +/- 19.4 vs. 59.3 +/- 11.8; T2: 74.0 +/- 21.6 vs. 74.7 +/- 17.5; T3: 71.1 +/- 21.3 vs. 68.1 +/- 15.1 cm/s; p = 0.952) at all time points. Groups were not different regarding postoperative rates of delirium (26.5% vs. 24.2%, p = 0.83), stroke (3.0% vs. 2.9%, p = 1.00) or cognitive decline through analysis of the Mini-Mental State Examination (16.7% vs. 40.7%; p = 0.07) and Montreal Cognitive Assessment (79.16% vs. 81.5%; p = 1.00). Conclusions The preoperative use of the IABP in high-risk patients undergoing cardiac surgery did not affect cerebral hemodynamics and was not associated with a higher incidence of neurological complications. Trial registration (NCT02143544).
Palavras-chave
IABP, Transcranial Doppler, Cerebral autoregulation, Cardiopulmonary bypass
URI
https://observatorio.fm.usp.br/handle/OPI/34258
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MCG
Artigos e Materiais de Revistas Científicas - FM/MCP
Artigos e Materiais de Revistas Científicas - HC/ICESP
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - HC/InCor
Artigos e Materiais de Revistas Científicas - LIM/08
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