Prognostic significance of nonsustained ventricular tachycardia during dobutamine stress echocardiography.
Am J Cardiol
; 96(9): 1293-8, 2005 Nov 01.
Article
en En
| MEDLINE
| ID: mdl-16253601
ABSTRACT
Nonsustained ventricular tachycardia (NSVT) is a well-recognized side effect during dobutamine stress echocardiography (DSE). This study sought to evaluate the prognostic implications of NSVT during DSE on 1,266 consecutive dobutamine stress echocardiograms performed over 1 year. NSVT, defined as > or =3 consecutive ventricular premature beats, occurred in 65 of 1,266 patients (5.1%). There was no absolute increased risk in all-cause mortality between the NSVT and no NSVT groups (22% vs 17%, p = 0.15) during the 3-year follow-up. Survival curves generated by the Kaplan-Meier method also demonstrated no increased risk in mortality between the NSVT and no NSVT groups (p = 0.43). When only studies with negative results for inducible ischemia were taken into account, survival curves showed no significant difference in all-cause mortality (p = 0.26). Studies with negative results for inducible ischemia were also stratified according to the ejection fraction (EF). Patients without inducible ischemia and mildly reduced to normal EFs (>0.45) did not have significant differences in survival between the NSVT and no NSVT groups over the 3-year follow-up (p = 0.86). However, patients without inducible ischemia and moderately reduced EFs (0.35 to 0.45) who had NSVT during DSE had significantly reduced survival over the follow-up (p = 0.01).
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Taquicardia Ventricular
/
Ecocardiografía de Estrés
Tipo de estudio:
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Aged
/
Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Am J Cardiol
Año:
2005
Tipo del documento:
Article