Risk factors and predictive model for mortality in acute myocardial infarction with ventricular septal rupture at high altitudes

Table 3 Comparison of echocardiographic indexes between groups (mean ± SD), n (%)

Echocardiographic indicator	Survival group	Death group	χ²/t	P value
LAD (mm)	37.2 ± 5.0	37.2 ± 6.2	-0.007	0.995
LVEDD (mm)	50.7 ± 5.2	49.7 ± 7.5	-0.532	0.597
LVEF	47.1 ± 6.2	44.3 ± 7.2	-1.454	0.153
Ventricular aneurysm (mm)	24 (80.0)	13 (72.2)	0.385	0.790
Area of ventricular aneurysm (mm2)	11.8 ± 4.3	10.5 ± 4.3	-0.906	0.370
VSR is adjacent to the apex of the heart VSR	15 (50)	10 (55.6)	0.139	0.709
VSR size (mm)	15.1 ± 6.4	15.8 ± 5.5	0.382	0.704
Valve insufficiency	12 (40.0)	8 (44.4)	0.091	0.762
PAH	14 (46.7)	8 (44.4)	0.022	0.881
Pericardial effusion	9 (30.0)	5 (27.8)	0.027	0.870

LAD: Left atrial diameter; LVEDD: Left ventricular end-diastolic diameter; LVEF: Left ventricular ejection fraction; VSR: Ventricular septal rupture; PAH: Pulmonary arterial hypertension.