Hepatic dysfunction and adverse outcomes after total arch repair of acute type a aortic dissection: application of the MELD-XI score

Table 3 Postoperative characteristics of the two groups

Valuables	MELD-XI < 14 (n = 74)	MELD-XI ≥ 14 (n = 153)	P value
Postoperative outcomes
Mechanical ventilation time (h)	39.4 ± 67.5	65.3 ± 83.2	0.020
ICU stay tine (day)	5.4 (2.0,5.0)	8.5 (3.0,9.0)	< 0.001
24-h postoperative drainage volume (mL)	453.9 ± 316.6	518.8 ± 355.3	0.183
Postoperative hospital stays(d)	17.9 (13.0,20.0)	21.0 (13.0,25.0)	0.046
Severe adverse outcomes
Sepsis (n, %)	6 (8.1)	22 (14.4)	0.178
Nervous system complications ^h (n, %)	11 (14.9)	34 (22.2)	0.192
Low Cardiac Output Syndrome ⁱ (n, %)	5 (6.8)	29 (19.0)	0.016
Ventricular fibrillation (n, %)	1 (1.4)	4 (2.6)	0.154
Reintubation (n, %)	4 (5.4)	4 (2.6)	0.493
Tracheostomy (n, %)	4 (5.4)	22 (14.4)	0.047
ECMO (n, %)	1 (1.4)	15 (9.8)	0.020
CRRT (n, %)	5 (6.8)	28 (17.6)	0.021
In-hospital mortality (n, %)	3 (4.0)	19 (12.4)	0.046

Data are presented as mean ± standard deviation, median [interquartile range] or number (%). Chi-square test for categorical variables and t test or Wilcoxon rank sum test for continuous variables
ICU Intensive care unit, CRRT Continuous renal replacement therapy, ECMO extracorporeal membrane oxygenation
^hNervous system complications: unconsciousness, delirium, coma and other temporary neurological dysfunctions; cerebral infarction; paraplegia or paraparesis
ⁱLow Cardiac Output Syndrome: the need for two or more inotropic medications to maintain systolic blood pressure greater than 90 mmHg or cardiac output > 2.2L/min/m² after adjusting preload and correcting all electrolyte or blood gas abnormalities

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