Changes in P-wave after percutaneous mitral valvuloplasty in patients with mitral stenosis and left atrial enlargement Evolução da onda P do eletrocardiograma após valvoplastia mitral em pacientes portadores de sobrecarga atrial esquerda

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dc.contributor.authorTarastchuk J.C.E.
dc.contributor.authorGuerios E.E.
dc.contributor.authorPerreto S.
dc.contributor.authorBueno R.D.R.L.
dc.contributor.authorDe Andrade P.M.P.
dc.contributor.authorNercolini D.C.
dc.contributor.authorPacheco A.L.A.
dc.contributor.authorUltramari F.T.
dc.contributor.authorFaidiga A.M.
dc.date.accessioned2024-03-13T01:42:04Z
dc.date.available2024-03-13T01:42:04Z
dc.date.issued2006
dc.description.abstractOBJECTIVE: To investigate potential clinical, echocardiographic and/or hemodynamic predictors of the regression of electrocardiographic (ECG) signs of left atrial enlargement (LAE) after successful percutaneous mitral valvuloplasty (PMV). METHODS: We studied 24 patients (75% female, mean age =37.1 ± 11.9 years) with moderate to severe mitral stenosis (MS), sinus rhythm (SR) and ECG signs of LAE who underwent successful PMV between 2002 and 2004. At least 6 months after the procedure (388.2 ± 192.9 days), the patients returned for clinical, ECG and echocardiographic follow-up. They were then divided in 2 groups: patients of group 1 (n = 8; 33.3%) still had ECG signs of LAE, and patients of group 2 (n = 16; 66.6%), had normal P wave. A multivariate analysis of clinical, ECG, echocardiographic and hemodynamic variables was performed. RESULTS: The mitral valve area (MVA) increased from 1.12 ± 0.15 cm 2 to 1.9 ± 0.35 cm2 immediately after the procedure (p < 0.0001) and decreased to 1.89 ± 0.41 cm2 at follow-up (p = NS). Left atrium diameter decreased from 48 ± 2.9mm pre-procedure to 43 ± 4.8mm at follow-up (p = 0.0001). P-wave duration decreased from 0.12 ± 0.01 sec pre-PMV to 0.09 ± 0.02 sec at follow-up (p = 0.0001). An MVA ≥ 1.7 cm2 at follow-up was the only independent predictor of a normal P-wave after PMV (p=0.02). CONCLUSION: ECG changes suggestive of LAE regress in the majority of patients with MS and sinus rhythm that undergo a successful PMV. An MVA≥1.7 cm2 at late follow-up was found to be an independent predictor of such normalization.
dc.description.issuenumber3
dc.description.volume87
dc.identifier.issn1678-4170
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/37766
dc.relation.ispartofArquivos Brasileiros de Cardiologia
dc.rightsAcesso Restrito
dc.subject.otherlanguageLeft atrial enlargement
dc.subject.otherlanguageMitral stenosis
dc.subject.otherlanguagePercutaneous mitral valvuloplasty
dc.titleChanges in P-wave after percutaneous mitral valvuloplasty in patients with mitral stenosis and left atrial enlargement Evolução da onda P do eletrocardiograma após valvoplastia mitral em pacientes portadores de sobrecarga atrial esquerda
dc.typeArtigo
local.scopus.citations4
local.scopus.eid2-s2.0-33750357737
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33750357737&origin=inward
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