Relationship Between RR Intervals and Early Diastolic Mitral Annulus Velocities in Atrial Fibrillation Patients Who do not Have Significant Valvular Diseases
Korean Circulation Journal
;
: 551-556, 2008.
Artigo
em Coreano
| WPRIM
| ID: wpr-85195
ABSTRACT
BACKGROUND AND OBJECTIVES:
Irregular RR intervals in atrial fibrillation (AF) results in beat to beat changes in hemodynamical parameters. Early diastolic mitral annulus velocity (E') is one of the parameters that represent diastolic function of the left ventricle (LV). In this study, we have investigated the effects of continuous changes of systolic functions in AF on the diastolic functions of the LV. SUBJECTS ANDMETHODS:
E' (35-40 beats) was recorded in 31 AF patients that did not have significant valvular heart diseases. The relationships between preceding RR intervals (RR-1) or pre-preceding RR intervals (RR-2) and E's were obtained using a logarithmic function.RESULTS:
Slopes between RR-1 and E' varied from -1.62 to 1.04 in total coordinates. In the logistic regression analysis patients with negative slopes were found to have a larger left atrial size than patients with positive slopes (5.5+/-0.67 cm vs. 4.9+/-0.56 cm, p=0.02). Slopes were negatively related with mean RR intervals in the Pearson correlation analysis (r=-0.40, p=0.028). Slopes between RR-2 and E' were also variable and were not associated with other parameters.CONCLUSION:
Beat to beat changes in systolic functions derived from irregular RR intervals in AF had variable effects on diastolic functions among patients. The relationship between RR-1 and E' was associated with LA sizes and mean RR intervals.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fibrilação Atrial
/
Modelos Logísticos
/
Função Ventricular Esquerda
/
Ecocardiografia Doppler de Pulso
/
Eletrocardiografia
/
Doenças das Valvas Cardíacas
/
Ventrículos do Coração
Tipo de estudo:
Fatores de risco
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Circulation Journal
Ano de publicação:
2008
Tipo de documento:
Artigo
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