Ultrasonographic assessment of cardiac function and disease severity in coronary heart disease

Table 2 Comparison of ultrasonic parameters in patients with coronary heart disease with different cardiac function grades (mean ± SD)

Group	n	E/A	LVDd (mm)	LAD (mm)
Grade II	45	1.71 ± 0.48	52.18 ± 3.67	39.68 ± 2.37
Grade III	37	1.41 ± 0.43	60.04 ± 4.21	44.16 ± 2.79
Grade IV	24	1.08 ± 0.39	66.81 ± 5.39	48.81 ± 3.95
t/P value (Grade II vs III)		2.950/0.004	8.995/0.000	7.863/0.000
t/P value (Grade III vs IV)		3.035/0.004	5.490/0.000	5.391/0.000

E/A: Early-to-late diastolic blood flow velocity ratio; LVDd: Left ventricular end-diastolic volume; LAD: Left atrial diameter.