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

Table 5 Comparison of LA function by RT3DE between CSFP patients with normal and increased LVFP

	Normal LVFP (n = 50)	Indeterminate LVFP (n = 8)	Increased LVFP (n = 2)	P-value
LA 3D Vol_max (mL)	51.76 ± 8.12	65.54 ± 8.03	82.00 ± 9.33^*#	< 0.001
LA 3D Vol_p (mL)	36.77 ± 6.17	48.67 ± 6.12	61.10 ± 12.02^*#	< 0.001
LA 3D Vol_min (mL)	25.05 ± 5.06	33.51 ± 7.45	43.60 ± 10.61^*#	< 0.001
LA 3D total ejection fraction (%)	51.74 ± 3.56	50.40 ± 4.60	47.20 ± 6.93	0.21
LA 3D active ejection fraction (%)	31.96 ± 5.64	31.42 ± 10.16	28.98 ± 3.39	0.80
LA 3D passive ejection fraction (%)	28.94 ± 4.34	25.63 ± 5.15	25.84 ± 6.22	0.15

Abbreviation: LA left atrium, 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
^*P < 0.05 vs. Normal LVFP; ^#P < 0.05 vs. Indeterminate LVFP

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