Clinical features and risk factors of postoperative in-hospital mortality following surgical repair of Stanford type A acute aortic dissection

Table 2 Univariable analysis of factors affecting postoperative in-hospital mortality in AAD patients

Variable	Death group		Survival group		X ²	P
Variable	N	%	%	%	X ²	P
Age (years)					10.303	0.001
> 65	36	66.67	41	41.05
≤ 65	18	33.33	215	58.95
Sex					1.939	0.164
Male	44	81.48	264	72.49
Female	10	18.52	100	27.51
Comorbidity with hypertension					0.305	0.581
Yes	38	70.37	240	65.94
No	16	29.63	124	34.06
Comorbidity with coronary heart disease					0.003	0.995
Yes	6	11.11	41	11.35
No	48	88.89	323	88.65
Comorbidity with diabetes					0.876	0.321
Yes	23	42.59	177	48.63
No	31	57.41	187	51.37
Renal insufficiency					6.859	0.009
Yes	15	27.78	48	17.86
No	39	72.22	316	82.14
Cardiac insufficiency					3.905	0.048
Yes	18	33.33	76	20.96
No	36	66.67	288	79.04
Pericardial effusion					0.715	0.398
Yes	21	38.89	162	44.54
No	33	61.11	202	55.46
Aortic regurgitation					2.177	0.140
Yes	17	31.48	62	17.03
No	37	68.52	302	82.97
DDi level (mg/L)					6.103	0.013
≥ 5.00	31	57.41	143	39.30
< 5.00	23	42.59	221	60.70
Cardiopulmonary bypass time (min)					37.015	0.000
≥ 250 min	44	81.48	127	34.93
< 250 min	10	18.52	237	65.07
Cerebral ischemia (m)					1.851	0.174
≥ 30.00	22	40.74	159	43.67
< 30.00	32	59.26	205	56.33
Operation time (h)					3.957	0.047
≥ 7.50	30	55.56	148	40.61
< 7.50	24	44.44	216	59.39
Blood transfusion (L)					9.040	0.003
≥ 3.00	29	53.70	168	46.29
< 3.00	25	46.30	196	53.71
Postoperative thoracotomy for hemostasis					11.140	0.001
Yes	14	25.93	29	7.86
No	40	74.07	335	92.14

ISSN: 1471-2261