Tricuspid annular plane systolic excursion evaluation improves selection of cardiac resynchronization therapy patients.
Clin Cardiol
; 33(9): 578-82, 2010 Sep.
Article
em En
| MEDLINE
| ID: mdl-20842743
ABSTRACT
BACKGROUND:
The beneficial effects of cardiac resynchronization therapy (CRT) on left ventricular (LV) remodeling have been extensively described. Few data are available about the effects of CRT on right ventricular (RV) function and remodeling.HYPOTHESIS:
We hypothesized that CRT could also induce reverse remodeling in the right ventricle and that RV baseline functional status expressed as tricuspidal annular plane systolic excursion (TAPSE) could affect CRT response.METHODS:
Echocardiographic investigation was performed before and 6 months after CRT. In 192 patients, TAPSE, LV, and RV dimensions with functional parameters and LV dyssynchrony index were evaluated.RESULTS:
At 6 months' follow-up, 86 patients (45%) were responders to CRT according to at least 15% LV end-systolic volume reduction. Among baseline echocardiographic parameters, responders had significantly lower TAPSE, larger LV volumes, and higher LV dyssynchrony index. In responders, LV volume reduction, ejection fraction increase, and mitral regurgitation improvement were associated with RV dimensions reduction, increased TAPSE, and improved LV dyssynchrony. Receiver operating characteristic curve analysis showed that TAPSE, at 17 mm optimal cutoff, yielded 64% sensitivity and 60% specificity in predicting CRT response; similarly, LV dyssynchrony index, at 41.25 ms optimal cutoff, predicted CRT response with 60% sensitivity and 62% specificity. A subgroup analysis demonstrated that the coexistence of high TAPSE and high dyssynchrony index values increased probability of CRT response.CONCLUSIONS:
Our results show that CRT induces RV and LV reverse remodeling and that CRT patient selection can be improved by simply measuring TAPSE value.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Valva Tricúspide
/
Hipertrofia Ventricular Direita
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Disfunção Ventricular Esquerda
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Remodelação Ventricular
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Terapia de Ressincronização Cardíaca
/
Ventrículos do Coração
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
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Prognostic_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Clin Cardiol
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Itália