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Table 2 Changes in the respiratory and circulatory systems before and after inflation intraoperatively

From: Effect of single-port inflatable mediastinoscopy simultaneous laparoscopic-assisted radical esophagectomy on respiration and circulation

   Inflatable stage   
5 min before inflation (baseline) 5 min 10 min 20 min 1 h 20 min after gas shutdown Postoperative 10 min
HR 69.1 ± 7.9 87.6 ± 15.5* 89.8 ± 16.7* 90.2 ± 16.5* 88.6 ± 14.3* 77.9 ± 12.8 73.0 ± 10.0
MAP 84.8 ± 6.4 103.4 ± 14.8* 104.3 ± 14.5* 97.9 ± 14.5* 98.2 ± 13.3* 90.6 ± 6.2 97.5 ± 10.6
CVP 6.3 ± 0.9 14.5 ± 1.5* 14.0 ± 1.9* 14.0 ± 1.6* 14.6 ± 1.7* 10.1 ± 1.6 9.0 ± 1.4
Peak AP 14.3 ± 1.6 21.7 ± 3.2* 23.1 ± 3.9* 23.0 ± 4.5* 23.4 ± 4.9* 15.5 ± 2.4 14.9 ± 2.2
ETCO2 33.4 ± 3.4 39.6 ± 3.3* 40.5 ± 5.8* 40.9 ± 5.9* 43.1 ± 5.6* 36.0 ± 3.4 34.6 ± 2.8
TV 403.2 ± 51.4 395.6 ± 49.2 378.6 ± 70.8 379.5 ± 50.0 354.9 ± 41.9* 365.8 ± 42.5 377.6 ± 43.0
OI 474.6 ± 71.8     316.2 ± 94.6* 360.6 ± 80.1* 431.1 ± 130.7
PH 7.38 ± 0.04     7.26 ± 0.06* 7.30 ± 0.04* 7.34 ± 0.03*
PaCO2 41.5 ± 4.0     59.2 ± 8.3* 52.5 ± 4.5* 46.9 ± 5.1*
Lac 1.25 ± 0.34     1.26 ± 0.34 1.27 ± 0.35 1.29 ± 0.35
  1. HR heart rate; MAP mean arterial pressure; CVP central venous pressure; PeakAP peak airway pressure; ETCO2 end-expiratory carbon dioxide partial pressure; TV tidal volume; OI oxygenation index; PaCO2 carbon dioxide partial pressure; Lac lactic acid level
  2. *Compared with 5 min before inflation (P < 0.05)