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Table 3 Perioperative arterial blood gas analysis and systemic stress response

From: Effects of pressure-controlled and volume-controlled ventilation on respiratory mechanics and systemic stress response during laparoscopic cholecystectomy

	Group PC (n = 20)	Group VC (n = 20)	P
PO₂ (mmHg)
PRE	89.1 ± 15.6	85.0 ± 15.0	NS
PER	155 ± 32.3	136.3 ± 36.2	NS
POST	98.4 ± 11.8	86.3 ± 11.3	0.002
PCO₂ (mmHg)
PRE	37.3 ± 5.6	38.9 ± 5.4	NS
PER	36.7 ± 3.5	41.8 ± 5.4	0.001
POST	37.4 ± 5.6	39.0 ± 5.3	NS
pH
PRE	7.41 ± 0.04	7.40 ± 0.05	NS
PER	7.39 ± 0.04	7.35 ± 0.05	0.003
POST	7.39 ± 0.04	7.37 ± 0.04	0.037
Cortisol (mg/dL)
PRE	12.5 ± 5.6	14.2 ± 6.2	NS
PER	22.4 ± 5.6	22.4 ± 6.4	NS
POST	20.5 ± 8.5	27.5 ± 5.9	0.005
Insulin (μU/mL)
PRE	4.6 ± 3.3	5.8 ± 3.7	NS
PER	3.2 ± 2.8	3.8 ± 4.5	NS
POST	7.4 ± 5.7	11.6 ± 6.3	0.02
Glucose (mg/dL)
PRE	89 ± 9.0	78 ± 14	0.004
PER	112 ± 22	100 ± 19	NS
POST	100 ± 16.7	109 ± 20	NS
Lactate (mmol/L)
PRE	2.2 ± 0.6	2.8 ± 0.8	NS
PER	2.8 ± 0.5	2.9 ± 0.2	NS
POST	1.8 ± 0.8	2.5 ± 0.7	NS

PO ₂ arterial oxygen pressure, PCO ₂ arterial carbon dioxide pressure, PRE preoperative values, PER peroperative (during pneumoperitonium) values, POST postoperative values, NS not significant
p < 0.05: statistically significant

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