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

Table 1 Comparison of ultrasonic parameters between two groups (mean ± SD)

Group	n	E/A	LVDd (mm)	LAD (mm)
Research group	106	1.46 ± 0.34	58.24 ± 5.05	43.31 ± 4.38
Control group	106	1.88 ± 0.44	48.15 ± 3.93	34.94 ± 2.81
t		7.776	16.234	16.560
P value		< 0.001	< 0.001	< 0.001

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

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.

Table 3 Comparison of ultrasonic parameters in patients with different degrees of coronary heart disease (mean ± SD)

Group	Number	E/A	LVDd (mm)	LAD (mm)
Mild	43	1.69 ± 0.50	51.97 ± 3.88	38.81 ± 2.56
Moderate	38	1.44 ± 0.41	59.95 ± 4.14	45.15 ± 2.97
Severe	25	1.13 ± 0.36	67.70 ± 6.11	49.09 ± 4.05
t/P value (Grade II vs III)		2.441/0.017	8.952/0.000	10.319/0.000
t/P value (Grade III vs IV)		3.078/0.003	6.009/0.000	4.453/0.000

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

Table 4 Correlation between ultrasonic parameters and cardiac function grade and lesion degree of coronary heart disease (n = 106)

Project	E/A	LVDd	LA
Cardiac function classification
r	0.606	0.589	0.577
P value	< 0.001	< 0.001	< 0.001
Degree of lesion
r	0.631	0.597	0.561
P value	< 0.001	< 0.001	< 0.001

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

Table 5 Comparison of ultrasonic parameters in patients with coronary heart disease with different prognosis (mean ± SD)

Group	n	E/A	LVDd (mm)	LAD (mm)
Good prognosis group	95	1.83 ± 0.51	49.60 ± 4.39	36.13 ± 3.05
Poor prognosis group	11	1.39 ± 0.32	59.09 ± 5.67	45.10 ± 5.60
t		2.791	6.579	8.333
P value		0.006	< 0.001	< 0.001

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