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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)