Doppler Tissue Image for Diagnosis of Myocardial Dyssynchronicity in Congestive Heart Failure: Comparison with EKG
Korean Circulation Journal
;
: 388-394, 2004.
Artigo
em Coreano
| WPRIM
| ID: wpr-131036
ABSTRACT
BACKGROUND AND OBJECTIVES:
Electrical dyssynchronicity (Dsyn) appears to be prognostic of survival in congestive heart failure (CHF). Recent study has shown some discrepancy between the electrical Dsyn and the Doppler tissue image (DTI) assessed mechanical Dsyn. The aim of our study was to evaluate the relationship between the QRS duration and DTI assessed Dsyn. SUBJCETS ANDMETHODS:
One hundred and forty patients, with CHF and left ventricular ejection fractions 130 msec, standard deviation (SD) of the RS time >40 msec, or a difference in the maximal and minimal RS times (RS time-diff) >100 msec were indicators of'Dsyn'.RESULTS:
The prevalence of myocardial Dsyn, by QRS duration, SD of the RS time and the RS time-diff were 19, 43 and 47%, respectively. The SD of the RS time (49.8+/-23.6 vs. 36.6+/-20.7, p130 msec) compared with the narrow QRS group. There was also a weak positive correlation between the QRS duration and the SD of the RS time (R=0.34, p<0.001) and the RS time-diff (R=0.38, p<0.001). However, from a cross-tabulation analysis, more than one third of patients had a discrepancy between QRS duration and DTI assessed mechanical Dsyn. From a multivariate analysis, a major determinant of the SD of the RS time was the QRS duration.CONCLUSION:
Although a major determinant of the DTI assessed Dsyn was the QRS duration, more than one-third of patients had a discrepancy between electrical and mechanical Dsyn. Therefore, not only the QRS duration, but the DTI assessed Dsyn, should be measured when considering cardiac resynchronization therapy.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Volume Sistólico
/
Prevalência
/
Análise Multivariada
/
Estrogênios Conjugados (USP)
/
Diagnóstico
/
Eletrocardiografia
/
Terapia de Ressincronização Cardíaca
/
Insuficiência Cardíaca
Tipo de estudo:
Estudo diagnóstico
/
Estudo de prevalência
/
Estudo prognóstico
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Circulation Journal
Ano de publicação:
2004
Tipo de documento:
Artigo
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