|
pH
|
7.35–7.45
|
Acidosis/alkalosis is usually respiratory; correct with ventilator settings
|
|
pCO2 (mmHg)
|
35–45
|
Hyper/hypocarbia usually due to ventilator support, correct with ventilator settings
|
|
pO2 (mmHg)
|
200–220 (50 % FiO2)
|
Hyperoxia should be avoided due to possibility of oxygen free radicals. Hypoxia may be corrected by increasing pressure support or positive and expiratory pressure, or temporarily increasing FiO2
|
|
HCO3 (mmol/L)
|
22–33
|
Perturbations are typically respiratory in nature. Correct ventilator settings accordingly
|
|
Sodium (mmol/L)
|
129–143
|
Increase or decrease isotonic fluid infusion rate
|
|
Potassium (mmol/L)
|
3.9–4.1
|
Hyper/hypokalemia are rarely seen intraoperatively, mild perturbations do not need correction
|
|
Ionized calcium (mmol/L)
|
1.1–1.6
|
For hypocalcemia, consider calcium gluconate 30 mg/kg/dose titrated to laboratory parameters
|
|
Glucose (mg/dL)
|
100–200
|
Increase or decrease dextrose containing, isotonic fluid infusion rate
|
|
Hemoglobin (g/dL)
|
7–10
|
In the absence of acute blood loss during surgery, anemia is usually due to a dilutional effect from intravenous fluid administration. No therapy is required
|
