Electrocardiographic differences between apical hypertrophic cardiomyopathy and apical non-ST segment myocardial infarction

Autor: Iván, Chillik, Andreina, Gil Ramírez, Santiago, Ordóñez, Leandro, Tomás, Josefina, Parodi, Juan Pablo, Costabel
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Medicina (Buenos Aires), Vol 78, Iss 2, Pp 71-75 (2018)
ISSN: 1669-9106
0025-7680
Popis: 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
Databáze: OpenAIRE
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