Incremental value of three-dimensional echocardiography for evaluating left atrial function in patients with coronary slow flow phenomenon: a case control study

Table 6 Correlation of LA volume and function parameters with mean TIMI frame count and number of involved artery

	Mean TIMI frame count		Number of involved artery
	r	P	r	P
LA 2D Vol_max (mL)	0.27	0.007	0.22	0.03
LA 2D Vol_p (mL)	0.25	0.01	0.19	0.05
LA 2D Vol_min (mL)	0.29	0.003	0.25	0.01
LA 2D total ejection fraction (%)	−0.15	0.13	−0.22	0.02
LA 2D active ejection fraction (%)	−0.24	0.02	−0.32	0.001
LA 2D passive ejection fraction (%)	−0.02	0.81	−0.06	0.56
LA 3D Vol_max (mL)	0.28	0.007	0.25	0.01
LA 3D Vol_p (mL)	0.32	0.002	0.27	0.009
LA 3D Vol_min (mL)	0.41	< 0.001	0.42	< 0.001
LA 3D total ejection fraction (%)	−0.58	< 0.001	−0.63	< 0.001
LA 3D active ejection fraction (%)	−0.35	< 0.001	−0.43	< 0.001
LA 3D passive ejection fraction (%)	−0.16	0.11	−0.17	0.10

Abbreviation: LA left atrium, 2D two-dimensional, 3D three-dimensional, LA Vol_max maximal LA volume in ventricular systole just before mitral valve opening, LA Vol_min minimal LA volume after mitral valve closure, LA Vol_p LA volume at the onset of the P wave on electrocardiography

ISSN: 1476-7120