Table 3.

Comparing the results of electrocardiography, echocardiography, and coronary angiography among the three groups with different coronary artery dominance

Variable	Subcategories	Right dominant	Left dominant	Co-dominant	P
Electrocardiography
Rhythm	Sinus	52	33	18	0.111*
	Atrial fibrillation	1	1	1
	Ventricular	0	0	2
	Junctional	1	0	1
Atrioventricular block	None	47	31	18	0.698*
	1st degree	6	3	4
	2nd degree	0	0	0
	CHB	1	0	0
ST elevation	I	5	11	5	0.024†
	II (mm)	1.16	0.55	1.04	0.111†
	III (mm)	1.73	0.91	1.36	0.104†
	avR	0	1	2	0.087*
	avL	3	6	5	0.040*
	avF	28	5	9	0.002*
	V1-V3 (mm)	0.50	0.50	0.45	0.985†
	V2-V4 (mm)	0.31	0	0	0.173†
	V1-V6 (mm)	2.01	1.29	1.68	0.897
	V5-V6 (mm)	0.30	0.32	0.09	0.668
	Right	9	2	3	0.056*
	Posterior	2	1	1	0.951*
Echocardiography
Left ventricle size	Normal	51	32	21	0.976*
	Enlarged	3	2	1
Ejection fraction categories	≥55%	3	0	1	0.442*
	45-54%	11	6	4
	35-44%	26	19	11
	21-34%	13	5	3
	≤20%	1	4	3
Ejection fraction (%), median		40.28	34.00	33.80	0.009
Right ventricle size	Normal	52	31	21	0.576*
	Enlarged	2	3	1
RV function	Normal	37	24	16	0.647*
	Mild or moderate dysfunction	17	9	6
	Severe dysfunction	0	1	0
Mitral regurgitation		18	3	5	0.31*
Diagnosis
Left main lesion		1	0	0	0.530*
Single-vessel disease		22	13	7
2-vessel disease		13	13	5
Multivessel disease		18	8	10

*The results of Chi-square test; ^†The results of one-way ANOVA; IVCD=LAFB; Left anterior fascicular block; LPFB=Left posterior fascicular block; LBBB=Left bundle branch block; RBBB=Right bundle branch block; RV=Right ventricular; CHB=Complete heart block