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O2 toxicity
med gas review
| Question | Answer |
|---|---|
| What are determining factors for O2 toxicity? | PO2 & Exposure Time |
| What does O2 toxicity primarily affect? | The lungs & CNS |
| What are complications/precautions associated with oxygen therapy | 1. Oxygen toxicity 2. Retinopathy of prematurity 3. Absorption atelectasis 4. Oxygen induced hypoventilation |
| What syndrome can result from oxygen toxicity | Respiratory distress syndrome |
| How can the risk of oxygen toxicity be reduced | FIO2 < 60 |
| What are clinical signs of oxygen toxicity | 1. Cough 2. Substernal Pain 3. Lethargy, Dyspnea 4. Refractory Hypoxemia, Vomiting |
| Who does depression of ventilation occur in? | COPD patients with chronic hypercapnia |
| What happens in retinopathy of prematurity? | Excessive blood O2 levels cause retinal vasoconstriction & necrosis |
| High FiO2 in an infant can result in | ROP-retinopathy of prematurity |
| The primary reason some patients with COPD hypoventilate when given O2 is most likely suppression of what | Hypoxic Drive |
| Complications/precautions associated with oxygen therapy | C. Retinopathy of prematurity |
| What are three goals of O2 Therapy | 1. Correct documented or suspected acute Hypoxemia 2. Decrease symptoms associated with chronic hypoxemia 3. Decrease workload hypoxemia imposes on cardiopulmonary system |