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Table 2 Comparison of all patients with normal and prolonged ventilation

From: Prolonged ventilation post cardiac surgery - tips and pitfalls of the prediction game

Group of variables Variable Normal ventilation
(n = 4182)
Prolonged
ventilation
(n = 175)
p
Demographic data and general condition Age > 65 years 1780 (43%) 94 (54%) <0.01
  Female gender 1329 (32%) 78 (45%) <0.01
  Unstable course of disease 1594 (38%) 98 (56%) <0.00
  Unstable course of disease 1594 (38%) 98 (56%) <0.01
  Critical preoperative state 8 (0.2%) 9 (5.1%) <0.00
  Critical preoperative state 8 (0.2%) 9 (5.1%) <0.01
Circulatory function CCS class IV 366 (8.8%) 24 (14%) 0.02
  NYHA class III or IV 740 (18%) 68 (39%) <0.01
  Previous PTCA/stent 1053 (25%) 36 (21%) 0.17
  Recent MI up to 90 days 694 (17%) 29 (17%) 0.99
  EF < 40% 467 (11%) 33 (19%) <0.01
  Endocarditis 37 (0.9%) 5 (2.9%) 0.03
Co-morbidities Diabetes 1164 (28%) 56 (32%) 0.23
  Arterial hypertension 3149 (75%) 119 (68%) 0.03
  BMI > 35 196 (4.7%) 9 (5.1%) 0.78
  Renal failure 92 (2.2%) 10 (5.7%) 0.01
  COPD 389 (9.3%) 18 (10%) 0.66
  History of TIA or stroke 235 (5.6%) 23 (13%) <0.01
  Carotid disease 511 (12%) 26 (15%) 0.30
  Peripheral vascular disease 599 (14%) 21 (12%) 0.39
Procedure -related variables Previous cardiac surgery 142 (3.4%) 18 (10%) <0.01
  Non-elective surgery 922 (22%) 41 (23%) 0.67
  Emergency surgery 104 (2.5%) 33 (19%) <0.01
  CABG 1157 (28%) 38 (22%) 0.08
  OPCAB/MIDCAB 1432 (34%) 20 (11%) <0.01
  CPB > 2 h 868 (21%) 108 (62%) <0.00
  CPB > 2 h 868 (21%) 108 (62%) <0.01
  Coronary surgery 2589 (62%) 58 (33%) <0.00
  Coronary surgery 2589 (62%) 58 (33%) <0.01
  Valve surgery 1026 (25%) 51 (29%) 0.17
  Combined procedures 388 (9.3%) 36 (21%) <0.01
  Aortic aneurysm surgery 179 (4.3%) 30 (17%) <0.00
  Aortic aneurysm surgery 179 (4.3%) 30 (17%) <0.01
Outcome Death 28 (0.7%) 47 (27%) <0.01