Table 3. Postoperative recovery related clinical data.

Item	Preset pericardium group (n=30)	Control group (n=55)	t or χ2 value	P value
24 h drainage after surgery (mL)	605.2±295.6	1,180.3±458.7	6.193	<0.001*
Re-exploration	2 (6.7)	9 (16.4)	1.620	0.203
Neurologic dysfunction	1 (3.3)	3 (5.5)	0.194	0.659
ICU time (h)	105.3±39.4	129.5±43.9	2.516	0.014*
Treated with CRRT	5 (16.7)	21 (38.2)	4.232	0.039*
Mechanical ventilation time (h)	29.7±18.8	43.2±32.1	2.111	0.038*
Mediastinum infection	5 (16.7)	9 (16.4)	0.001	0.971
In hospital death	2 (6.7)	7 (12.7)	0.753	0.384

Values are expressed as mean ± standard deviation or number (%). *, P<0.05. ICU, intensive care unit; CRRT, continuous renal replacement therapy.