Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 1 de 1
Filter
Add filters








Year range
1.
Arq. bras. cardiol ; 99(2): 688-696, ago. 2012. graf
Article in Portuguese | LILACS | ID: lil-647719

ABSTRACT

FUNDAMENTO: A resposta inflamatória orgânica constitui um mecanismo fisiopatológico presente em todas as cirurgias de revascularização do miocárdio com circulação extracorpórea (CRVM-CEC), e a liberação de mediadores inflamatórios constitui um de seus mecanismos de defesa. OBJETIVO: Avaliar, em estudo prospectivo duplo-cego randomizado e controlado com placebo, os efeitos da trimetazidina (Tmz) sobre a resposta inflamatória, por meio da variação nas interleucinas 6 e 8; TNF-α; complementos C3 e C5, e na proteína C reativa ultrassensível (PCR-us), em dois momentos, pré e pós-operatório. MÉTODOS: Foram estudados 30 pacientes submetidos a CRVM-CEC utilizando cardioplegia hipotérmica intermitente, e com no máximo disfunção ventricular leve, divididos em dois grupos (placebo e Tmz), estratificados por ecocardiografia e recebendo medicação/placebo na dose de 60mg/dia. As amostras foram dosadas no pré-operatório sem medicação, no dia da cirurgia com 12 a 15 dias de medicação/placebo e, seguidamente, 5 min após o desclampeamento aórtico, 12 e 24h, para interleucinas e complementos, e 48h para PCR. RESULTADOS: Não ocorreram diferenças significativas entre os níveis de interleucina 8, Tnf-α, complementos C3 e C5, e PCR-us. No entanto, no grupo tratado, os níveis de interleucina 6 foram significativamente inferiores aos do grupo controle, em todos os momentos analisados. CONCLUSÃO: A trimetazidina mostrou-se eficaz apenas na redução da interleucina 6 nos pacientes submetidos à CRVM.


BACKGROUND: Organic inflammatory response is a pathophysiological mechanism present at every coronary artery bypass grafting with extracorporeal circulation (CABG-ECC), the release of inflammatory mediators being one of its defense mechanisms. OBJECTIVE: To assess, in a prospective double-blind randomized and placebo-controlled study, the effects of trimetazidine (Tmz) on the inflammatory response, by using the variation in interleukins 6 and 8, TNF-α, complements C3 and C5, and highly sensitive C-reactive protein (HS-CRP) levels in the pre- and post-operative periods. METHODS: This study assessed 30 patients undergoing CABG-ECC with intermittent hypothermic cardioplegia, and having, at most, mild ventricular dysfunction. The patients were divided into two groups (placebo and Tmz), stratified by echocardiography, and received drug/placebo at the dose of 60 mg/day. Measurements were taken as follows: in the pre-operative period with no drug; on the day of surgery, corresponding to 12 to 15 days on drug/placebo; five minutes after aortic unclamping; 12 and 24 hours after surgery, for interleukins and complements; and 48 hours after surgery, for HS-CRP. RESULTS: No significant difference between the levels of interleukin 8, TNF-α, C3 and C5, and HS-CRP was observed. However, the interleukin 6 levels were significantly lower in the group treated as compared with those in the control group at all time points assessed. CONCLUSION: Trimetazidine proved to be effective only for reducing interleukin 6 in patients undergoing CABG.


Subject(s)
Aged , Female , Humans , Male , Coronary Artery Bypass/methods , Trimetazidine/administration & dosage , Vasodilator Agents/administration & dosage , Biomarkers/blood , Cytokines/blood , Double-Blind Method , Inflammation Mediators/metabolism , Inflammation/metabolism , Postoperative Period , Prospective Studies , Placebos/administration & dosage , Time Factors , Treatment Outcome
SELECTION OF CITATIONS
SEARCH DETAIL