Study of left ventricular systolic volume and synchrony in patients with premature ventricular complexes from the right ventricular outflow tract by instantaneous full-volume imaging / 中华超声影像学杂志
Chinese Journal of Ultrasonography
; (12): 369-373, 2011.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-415495
Biblioteca responsável:
WPRO
ABSTRACT
Objective To assess alternations in left ventricular volume and systolic synchrony in patients with frequent premature ventricular complexes(PVCs) from the right ventricular outflow tract(RVOT).Methods Twenty-nine patients with frequent isolated PVCs from RVOT were included and 30 healthy subjects as control.Instantaneous full-volume imaging(IFI) was performed to evaluate left ventricle volumetric parameters,including end-systolic volume (ESV),end-diastolic volume (EDV),stroke volume (SV),ejection fraction (EF),and systolic synchrony parameters,including systolic dyssynchrony index (SDI),dispersion end-systole (DISPES),mean end-systolic time (MES),pre-contraction time volume (PreContr) and post-contraction time volume (PostContr).Contraction front mapping was performed to visualize volumetric contraction sequence.All values of patients with PVCs were recorded during sinus beats (PVC-S) and premature ventricular beats (PVC-V) respectively.Results Significant differences were observed in left ventricular systolic volumetric and synchrony parameters between PVC-V and control subjects (P<0.01),as well as in MES and PreContr between PVC-S and control subjects (P<0.01).Conclusions Left ventricular systolic dysynchrony was demonstrated in patients with PVCs from RVOT.IFI was a novel tool to analyze left ventricular global and regional volumetric alternations.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Chinese Journal of Ultrasonography
Ano de publicação:
2011
Tipo de documento:
Artigo