VENTILATOR MODES and 
ARTERIAL BLOOD GAS INTERPRETATION

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OBJECTIVES

Explain the difference between a spontaneous breath and an assisted breath during mechanical ventilation.

Differentiate volume control and pressure control ventilation.

Review the traditional modes of ventilation, including:

a. Assist/control
b. Continuous mandatory ventilation
c. Continuous positive airway pressure
d. Pressure support ventilation
e. Synchronized intermittent mandatory ventilation

Discuss the role of increasing mean airway pressure in managing oxygenation.

Define intrapulmonary shunt.

Describe the mechanism by which PEEP improves
oxygenation.

Interpret arterial blood gases accurately, including identification of:

a. Respiratory acidosis
b. Respiratory alkalosis
c. Metabolic acidosis
d. Metabolic alkalosis

Discuss application of information obtained from the arterial blood gas in caring for the ventilated patient.

Discuss manipulation of ventilator settings consistent with a lung protective strategy.

Identify auto-Peep by analyzing a ventilator flow waveform.

 

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