Oxygenation Only!
Compensation
Gas interpretation
Ventilator Settings
Body Response
100

ABG pH 7.37/PaCO2 42/PaO2 83/HCO3- 24

What is normal oxygenation?

100

ABG pH 7.37/PaCO2 54/HCO3-28

What is fully compensated?

100

ABG pH 7.29/PaCO2 57/PaO2 85/HCO3- 25

What is respiratory acidosis with normal oxygenation?

100

In pressure controlled ventilation, these two primary ventilator settings are most commonly (but not always!) increased to correct this type of blood gas. ABG pH 7.23/PaCO2 56/PaO2 84/HCO3- 24 

What is respiratory rate and peak inspiratory pressure.

100

This is the body's long-term compensation for an elevated PaCO2.

What is to increase HCO3-?

200

ABG pH 7.19/PCO2 86/PaO2 44/HCO3-26

What is moderate hypoxemia?

200

ABG pH 7.19/ PCO2 71/HCO3- 26

What is uncompensated?

200

ABG pH 7.46/PaCO2 33/PaO2 41/HCO3- 25

What is respiratory alkalosis with moderate hypoxemia?

200

This ventilator setting is most often increased first for blood gases with the following values: pH 7.44/PaCO2 36/PaO2 75/HCO3- 23 on 30% FiO2

What is FiO2?

200

This is the body's long-term compensation for a pH of 7.50 and PaCO2 of 25.

What is to decrease HCO3-?

300

ABG pH 7.33/PCO2 49/PaO2 71/HCO3- 22

What is mild hypoxemia?

300

ABG pH 7.45/PaCO2 34/PaO2 59/HCO3- 21

What is fully compensated?

300

ABG pH 7.37/PaCO2 48/PaO2 67/HCO3-27

What is fully compensated respiratory acidosis with mild hypoxemia?

300

This setting should most likely be decreased for a patient on BiPAP with the following settings, vital signs, and ABG: 

BiPAP S/T, rate of 4/IPAP 16/EPAP 6/IT 1/FiO2 21%

Vitals: HR 91, RR 18, SpO2 95%

ABG pH 7.49/PaCO2 30/PaO2 83/HCO3- 24

What is IPAP?

300

This is the body's response to an HCO3- of 15.

What is to decrease PaCO2 (hyperventilate)?

400

ABG pH 7.41/PCO2 33/PaO2 141/HCO3- 26

Hyperoxemia?

400

ABG pH 7.29/PaCO2 58/PaO2 81/HCO3- 27

What is partially compensated?

400

ABG pH 7.16/PaCO2 33/PaO2 95/HCO3- 15

What is partially compensated metabolic acidosis with normal oxygenation?

400

This BiPAP setting should most likely be decreased for a 10 year old patient with the following BiPAP settings, vitals, and ABG: 

BiPAP S/T Rate of 4/IPAP 12/EPAP 6/FiO2 60%

Vitals: HR 99, RR 20, SpO2 98%

ABG pH 7.34/PaCO2 47/PaO2 133/HCO3-26

What is FiO2?

400

This is the body's response to an HCO3- of 28.

What is to increase PaCO2 (hypoventilate)?

500

ABG pH 7.34/PCO2 50/PaO2 40/HCO3- 26. 

What is moderate hypoxemia?

500

ABG pH 7.15/PaCO2 71/PaO2 55/HCO3- 19

What is combined acidosis?

500

ABG pH 7.23/PaCO2 53/PaO2 68/HCO3- 20

What is combined (respiratory and metabolic) acidosis with mild hypoxemia?

500

For a patient on HFOV, this type of frequency change should result in a decreased PaCO2.

What is a decrease?

500

This is the body's typical response to hypoxemia

What is increased respiratory drive (and subsequent hyperventilation)?