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## Exam 2 - Review Questions 1. Which of the following statements concerning hypoxemia and hypoxia is/are true? - Hypoxemia is a condition where the O2 content in the arterial blood is below normal. - Hypoxemia is only a concern when the O2 is below normal in venous blood. - Hypoxia is...

## Exam 2 - Review Questions 1. Which of the following statements concerning hypoxemia and hypoxia is/are true? - Hypoxemia is a condition where the O2 content in the arterial blood is below normal. - Hypoxemia is only a concern when the O2 is below normal in venous blood. - Hypoxia is a lack of oxygen reaching the tissues. - Hypoxemia will rarely, if ever, be a cause of hypoxia. - **I, III, and IV are correct** 2. Which of the following would NOT be an indication for oxygen therapy? - Suspected hypoxia. - PaO2 of 82 torr. - **A patient suffering a lung injury from a MVA (motor vehicle accident).** - A possible myocardial infarct. 3. You are caring for a patient with moderate to severe hypoxia. Their SpO2 was reading 78% on room air when they first arrived. Their HR was 135 bpm, RR - 36 bpm, and the blood pressure was 172/98. You place the patient on a NRB mask and the SpO2 increases to 86% after 20 minutes. At this time, you notice the HR has decreased to 69 bpm and the RR to 12 bpm. Breathing is weak and shallow. What would be your next intervention? - Place the patient on a partial re-breather mask at 15 L/min flow. - **Draw an ABG to determine the ventilation status.** - No further intervention is necessary as the patient appears to be improving. - Place the patient on a high flow nasal cannula and monitor closely. 4. Ventilation and oxygenation are the same thing. - True - the two terms are used interchangeably. - True - except oxygenation is basically used when describing hypoxic COPD patients. - **False - Oxygenation is contingent on cardiac output and ventilation on the lung's vital capacity.** - False - A person may be ventilating sufficiently, but still have oxygenation issues. 5. You are treating a patient whose SpO2 is 93% on room air. The patient is slightly cyanotic, so the physician has ordered an ABG, and you find the PaO2 is 42 mmHg. What would be your next course of action? - Change pulse oximeters. - **Draw blood to check for anemia.** - Redraw the ABG as it's obviously venous and not arterial. - These findings are consistent, and no further action is required at this time.