Table 2

Comparison of the external aortic root support (EARS) patients and the comparison group with respect to procedural data

	Median	IQR	Range
Operation time (min)
EARS (N=20)	148	136–163	125–415
Comparison (N=19^*)	240	204–269	150–414
Bypass time (min)
EARS (N=20)	0	0–0	0–20^†
Comparison (N=20)	134	117–146	52–316
Ischaemic time (min)
EARS (N=20)	0	0–0	0–0
Comparison (N=20)	114	91–127	41–250
Postoperative days in hospital
EARS (N=20)	6	5–7	4–16
Comparison (N=20)	7	6–8	4–17
Chest tube drainage up to 4 h after surgery (ml)
EARS (N=20)	50	50–100	25–400
Comparison (N=18^*)	230	155–370	85–735
Chest tube drainage up to 12 h after surgery (ml)
EARS (N=20)	120	75–200	25–925
Comparison (N=18^*)	385	326–688	200–1010

↵* Missing data for one or more patients.
↵† Note that for the EARS group, cardiopulmonary bypass was used for 20 min in the first patient only and none had any interruption to coronary blood flow.