A patient presents with PaO2 of 54 mmHg and an arterial oxygen saturation of 80%. The nurse assesses for which most likely cause of this type of acute respiratory failure?
1. Cervical spinal cord injury
2. Pneumothorax
3. Obesity
4. Oversedation
2
Rationale 1: A PaO2 of 54 mmHg and an arterial oxygen saturation of 80% are indicative of hypoxemic respiratory failure. Cervical spine injury results in depressed respiratory center drive, which is a cause of hypoventilation failure.
Rationale 2: A PaO2 of 54 mmHg and an arterial oxygen saturation of 80% are indicative of hypoxemic respiratory failure and can be caused by conditions such as pneumothorax.
Rationale 3: A PaO2 of 54 mmHg and an arterial oxygen saturation of 80% are indicative of hypoxemic respiratory failure and can be caused by conditions that would lower the patient's oxygen content. Obesity is a cause of hypercapnia respiratory failure.
Rationale 4: A PaO2 of 54 mmHg and an arterial oxygen saturation of 80% are indicative of hypoxemic respiratory failure and can be caused by conditions that would lower the patient's oxygen content. Oversedation is a cause of hypercapnia respiratory failure.
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