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A Importância de um ECG Normal em Síndromes Coronarianas Agudas sem Supradesnivelamento do Segmento

2010Journal article Open access
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dc.contributor.authorTeixeira, R
dc.contributor.authorLourenço, C
dc.contributor.authorAntónio, N
dc.contributor.authorMonteiro, S
dc.contributor.authorBaptista, R
dc.contributor.authorJorge, E
dc.contributor.authorFerreira, MJ
dc.contributor.authorMonteiro, P
dc.contributor.authorFreitas, M
dc.contributor.authorProvidência, LA
dc.date.accessioned2010-06-24T12:20:46Z
dc.date.available2010-06-24T12:20:46Z
dc.date.issued2010
dc.description.abstractBACKGROUND: Admission ECG has a major impact on the diagnosis and management of non-ST elevation acute coronary syndromes (ACS). OBJECTIVE: To assess the impact of the admission ECG on prognosis over non-ST ACS. Population: prospective, continuous, observational study of 802 non-ST ACS patients from a single center. METHODS: Patients were divided in 2 groups: A (n=538) - Abnormal ECG and B (n=264) - Normal ECG. Normal ECG was synonymous of sinus rhythm and no acute ischemic changes. A one-year clinical follow up was performed targeting all causes of mortality and the MACE rate. RESULTS: Group A patients were older (68.7+/-11.7 vs. 63.4+/-12.7Y, p<0.001), had higher Killip classes and peak myocardial necrosis biomarkers. Furthermore, they had lower left ventricular ejection fraction (LVEF) (52.01+/-10.55 vs. 55.34+/- 9.51%, p<0.001), glomerular filtration rate, initial hemoglobin, and total cholesterol levels. Group B patients were more frequently submitted to invasive strategy (63.6 vs. 46.5%, p<0.001) and treated with aspirin, clopidogrel, beta blockers and statins. They also more often presented normal coronary anatomy (26.2 vs. 18.0%, p=0.45). There was a trend to higher in-hospital mortality in group A (4.6 vs. 1.9%, p=0.054). Kaplan-Meyer analysis showed that at one month and one year (95.1 vs. 89.5%, p=0.012) survival was higher in group B and the result remained significant on a Cox regression model (normal ECG HR 0.45 (0.21 - 0.97). There were no differences regarding the MACE rate. CONCLUSION: In our non-ST elevation ACS population, a normal ECG was an early marker for good prognosis.pt
dc.identifier.citationArq Bras Cardiol. 2010 Jan;94(1):25-33.pt
dc.identifier.urihttp://hdl.handle.net/10400.4/795
dc.language.isoporpt
dc.publisherSociedade Brasileira de Cardiologiapt
dc.subjectSíndrome Coronária Agudapt
dc.titleA Importância de um ECG Normal em Síndromes Coronarianas Agudas sem Supradesnivelamento do Segmentopt
dc.title.alternativeThe importance of a normal ECG in non-ST elevation acute coronary syndromespt
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticlept

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