QT dispersion measured by automatic computerized 12-lead electrocardiography contributes significantly to detection of left ventricular hypertrophy in Japanese patients.
J Int Med Res
; 39(1): 51-63, 2011.
Article
en En
| MEDLINE
| ID: mdl-21672307
This study assessed the diagnostic value of QT dispersion for left ventricular hypertrophy (LVH) as determined by echocardiography. The QT and QRS interval parameters were determined automatically using computerized 12-lead electrocardiography in 153 Japanese out-patients. Corrected QT dispersion (QTcD) and maximal QRS duration (MaxQRS) were significantly correlated with left ventricular mass index. The sum of QTcD and MaxQRS showed the highest correlation with left ventricular mass index among QT and QRS interval parameters and their combinations. The cut-off points for LVH discrimination in this study were different to those reported in Western, mainly Caucasian, populations, suggesting the need for ethnicity-specific LVH detection criteria. A scoring system derived from multiple logistic regression analysis, employing a combination of QTcD, QRS time-voltage product and ST-T change, showed a specificity of 86.3%. It was concluded that QTcD, in addition to QRS time-voltage product and ST-T change, improved the detection of LVH.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ecocardiografía
/
Hipertrofia Ventricular Izquierda
/
Pueblo Asiatico
/
Electrocardiografía
Tipo de estudio:
Diagnostic_studies
/
Observational_studies
/
Risk_factors_studies
Límite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Int Med Res
Año:
2011
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Reino Unido