Freestyle aortic root prosthesis in combination with aortic replacement and open anastomosis: a retrospective analysis

Table 2 Cardiopulmonary bypass time for isolated root replacement with or without ascending aorta replacement (+/−) hemiarch in minutes

	Open anastomosis (+ascending aorta) (OA) n = 90	Root replacement (+ascending aorta)^a (non-OA) n = 23	Stand-alone root replacement (non-OA) n = 78	p
Cannulation Site	axillary (n = 90)	central (n = 14) axillary (n = 9)	central (n = 49) axillary (n = 29)
CBP time	116 (105–135)	131 (116–135)	130 (104–152)	0.02^b
Crossclamp time	88 (77–102)	95 (89–120)	87 (73–112)	0.08^c
Total duration of OP	250 (219–285)	250 (220–300)	251 (210–335)	0.58

^aNo open anastomosis (+ascending aorta) includes, that the distal aortic anastomosis has been carried out while the aorta was clamped with regular systemic perfusion
^bOA vs non-OA (+ascending) significant p = 0.01 (Kruskal-Wallis: all pairwise comparisons (Conover-Iman))
^cOA vs non-OA (+ascending) significant p = 0.03 (Kruskal-Wallis: all pairwise comparisons (Conover-Iman))

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