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Table 3 Postoperative clinical outcomes

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

FeaturesMinimally invasive beating heart (n = 30)Median resternotomy arrested heart (n = 50)P Value
30-day mortality postoperative complications2 (6.7%)7 (14.0%)0.52
 Stroke0%3 (6.0%)1.0
 Acute renal failure2 (6.7%)7 (14.0%)0.52
 Liver dysfunction2 (6.7%)5 (10.0%)0.92
 Pulmonary complications2 (6.7%)6 (12.0%)0.70
 MODS2 (6.7%)7 (14.0%)0.52
 LCOS1 (3.3%)5 (10.0%)0.51
 Ventricular fibrillation2 (6.7%)7 (14.0%)0.52
 Cardiac tamponade1 (3.3%)3 (6.0%)1.0
 Cardiac arrest0%2 (4.0%)0.53
 Atrioventricular block1 (3.3%)4 (8.0%)0.72
 Superficial wound infection0%2 (4.0%)0.53
Atrial fibrillation11 (36.7%)18 (36.0%)0.95
Transfusion Ratio20 (66.7%)45 (90.0%)0.01
Transfusion Amount(U)2.0 (0 ~ 16)5.0 (0 ~ 20)< 0.001
Drainage Volume(ml)450 (100 ~ 3000)800 (250 ~ 4320)0.001
Extubation time(hours)13 (6 ~ 50)17 (9 ~ 72)0.04
ICU stay(hours)16.5 (11 ~ 58)24.5 (13 ~ 80)0.04
Postoperative hospital stay(days)6 (5 ~ 28)9 (5 ~ 45)< 0.001
6 months postoperative
 LVEDD(mm)64.3 ± 3.364.4 ± 4.20.18
 LVEF0.55 ± 0.070.53 ± 0.080.50
 Cardiothoracic Ratio0.62 ± 0.040.63 ± 0.050.24
 NYHA functional class  0.33
  I14 (46.7%)18 (36.0%) 
  II13 (43.3%)25 (50.0%) 
  III2 (6.7%)4 (8.0%) 
  IV1 (3.3%)3 (10.0%) 
  1. Continuous variables are expressed as means ± standard deviation or medians with range. Bold values represent P values are considered to be statistically significant at <0.05
  2. Acronyms: LCOS Low cardiac output syndrome, MODS Multiple organ dysfunction syndrome, ICU Intensive care unit, LVEDD Left ventricular end diastolic diameter, LVEF Left ventricular ejection fraction, NYHA New York Heart Association