Table 6 Important variables divided by groups of 50 patients
From: Learning curve in minimally invasive mitral valve surgery: a single-center experience
Variables | 1–50 | 51–100 | 101–150 | 151–200 | P |
|---|---|---|---|---|---|
Cross-clamp time (min) | 115,1 (33,3) | 104,8 (29,5) | 99,2 (24,8) | 95,5 (29,6) | 0.0003a |
CPB time (min) | 173,9 (53,3) | 155,6 (39,5) | 151,9 (31,6) | 143,3 (36,6) | 0.0009a |
Ventilation time (hours) | 18,0 (14,2) | 16,8 (10,4) | 10.4 (7,2) | 8,7 (4,9) | < 0.0001a |
ICU time (hours) | 56,4 (35,7) | 61,3 (43,8) | 46,8 (23,5) | 35,7 (19,2) | 0.0001a |
Concomitant procedures | 14,0% | 28,0% | 30,0% | 30,0% | 0.0326b |
Composite technical failure rate | 16,0% | 20,0% | 9,0% | 8,0% | 0.0492b |