Table 2 Between group comparison of operative characteristics

CPB time (min)

93 ± 2

87 ± 3

0.038

X clamp time (min)

69 ± 1

58 ± 3

< 0.001

Valve size

0.186

 S/21

42 (19.2)

19 (19)

 M/23

87 (39.7)

31 (31)

 L/25

66 (30.1)

33 (33)

 XL/27

24 (10.9)

17 (17)

Operative urgency

0.697

 Elective

175 (79.9)

78 (78)

 Urgent

42 (19)

21 (21)

 Emergency

2 (0.9)

1 (1)

Approach

< 0.001

 Sternotomy

193 (88.1)

51 (51)

 Mini-sternotomy

23 (10.5)

40 (40)

 Right anterior thoracotomy

3 (1.4)

9 (9)