[Electrocardiographic differences between apical hypertrophic cardiomyopathy and apical non-ST segment myocardial infarction]. / Diferencias electrocardiográficas en miocardiopatía hipertrófica apical e infarto apical sin elevación del segmento ST.
Medicina (B Aires)
; 78(2): 71-75, 2018.
Article
em Es
| MEDLINE
| ID: mdl-29659354
ABSTRACT
Apocal hypertrophic cardiomyopathy (AHCM) is a phenotypic variant within hypertrophic cardiomyopathies, in which ventricular repolarization alterations are present. These electrocardiographic disturbances can mimic an anterior infarction which triggers a series of studies and treatments that may be unnecessary. The aim of this study was to describe and compare electrocardiographic differences in a series of patients with AHCM and apical non-ST segment elevation myocardial infarction in patients (NSTEMI) with T-wave changes. We conducted an observational and retrospective study, including patients with diagnosed AHCM (N = 19) and apical NSTEMI (N = 19) with negative T waves in V1 and V6 lead of the EKG. Those with AHCM presented higher T-wave voltage (7 mV vs. 5 mV, p = 0.001) and peak voltage (29 mV vs. 17 mV, p = 0.003), higher R-waves (25 mV vs. 10 mV, p = 0.0001), and a maximum voltage of R and T sum (R + T) significantly higher (33 vs. 14, p = 0.00001). They also showed a greater T-wave asymmetry, with a TiTp / TpTf ratio > 1. At a cut-off value of 26.5 mV for the R + T variable, 68% sensitivity and 100% specificity were obtained to diagnose AHCM. This study shows the existence of major differences in electrocardiographic presentation of AHCM and apical NSTEMI.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cardiomiopatia Hipertrófica
/
Eletrocardiografia
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Infarto do Miocárdio
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Prevalence_studies
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Risk_factors_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
Es
Revista:
Medicina (B Aires)
Ano de publicação:
2018
Tipo de documento:
Article