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Table 2 Intraoperative patient characteristics

From: Minimally invasive beating heart technique for mitral valve surgery in patients with previous sternotomy and giant left ventricle

Features

Minimally invasive beating heart (n = 30)

Median resternotomy arrested heart (n = 50)

P Value

Operation time(hours)

3.75 ± 0.45

4.17 ± 0.62

0.002

Cross-clamp time(minutes)

 

86.3 ± 8.06

 

CPB time(minutes)

130.2 ± 19.3

165.2 ± 27.6

< 0.001

Conversion to sternotomy

1 (3.3%)

  

Re-exploration for bleeding

1 (3.3%)

4 (8.0%)

0.72

Intraoperative IABP

1 (3.3%)

4 (8.0%)

0.72

Blood loss(ml)

515 ± 188

697 ± 222

< 0.001

Temperature during CPB(°C)

32.1 ± 0.46

29.0 ± 1.47

< 0.001

Arterial cannulation

  

< 0.001

 Ascending aorta

1 (3.3%)

44 (88.0%)

 

 Femoral artery

29 (96.7%)

6 (12.0%)

 

Venous cannulation

 Bicaval

1 (3.3%)

44 (88.0%)

< 0.001

 Femoral vein alone

6 (20.0%)

6 (12.0%)

 

 Jugulo-femoral

23 (76.7%)

0%

 

Type of MV operation

  

0.93

 MVR

26 (86.7%)

43 (86.0%)

 

 MVP

4 (13.3%)

7 (14.0%)

 

TVP

8 (100%)

14 (100%)

1.0

Radiofrequency ablation

7 (53.8%)

15 (71.4%)

0.50

  1. Continuous variables are expressed as means ± standard deviation. Bold values represent P values are considered to be statistically significant at <0.05
  2. Acronyms: CPB Cardiopulmonary bypass, IABP Intra-aortic balloon pump, MVP Mitral valvuloplasty, MVR Mitral valve replacement, TVP Tricuspid valvuloplasty, MV Mitral valve