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Table 2 Intraoperative Variables

From: Comparison of two protective lung ventilatory regimes on oxygenation during one-lung ventilation: a randomized controlled trial

  TLV-VCV OLV-VCV OLV-PCV End of Surgery
  n = 41 n = 41 n = 41 n = 41
VT (mL) 562 ± 109 377 ± 80a 386 ± 82a 524 ± 149
Ppeak (cmH2O) 18.7 ± 4.3 23.1 ± 4.3a 19.9 ± 3.8c 17.4 ± 3.5
Pmean (cmH2O) 5.6 ± 3.8 9.6 ± 1a 9.5 ± 1.3a 5.5 ± 1.9
Pplateau (cmH2O) 14.2 ± 3.8 16.8 ± 2.5a 16 ± 2.7b 13 ± 2.7
pH 7.45 ± 0.05 7.42 ± 0.04 7.43 ± 0.04 7.44 ± 0.05
PaO2 (mmHg) 277 ± 97 101 ± 52a 111 ± 56a 293 ± 91
PaCO2 (mmHg) 29.2 ± 4.3 32.4 ± 3.7 31.6 ± 3.9 29.4 ± 4.5
SaO2 (%) 99.3 ± 1 95.9 ± 3.2a 96.1 ± 3.4a 99.4 ± 1.1
A-aO2 D 198 ± 95 372 ± 51a 363 ± 56a 184 ± 89
  1. Data are shown as mean ± SD.
  2. A-aO2D = Alveolar-arterial oxygen difference; OLV = One-lung ventilation; PaCO2 = arterial carbon dioxide tension; PaO2 = arterial oxygen tension; PCV = Pressure controlled ventilation; Pmean = mean inspiratory pressure; Ppeak = peak inspiratory pressure; Pplateau = plateau inspiratory pressure; SaO2 = arterial oxygen saturation; TLV = Two-lung ventilation; VCV = Volume controlled ventilation; VT = Tidal volume; a p < 0.001 compared with TLV-VCV; b p < 0.01 compared with TLV-VCV; c p < 0.01 compared with OLV-VCV
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