5532656
Descrição
FlashCards por Aaron Samide, atualizado more than 1 year ago
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Criado por Aaron Samide
mais de 8 anos atrás
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| Questão | Responda |
| Criteria for acute respiratory failure (2) | Hypoxia (PaO2 < 60) Hypercapnia (PaCO2 > 50) |
| Cause of V/Q mismatch | Defect in either alveolar ventilation (e.g., pulmonary edema) or perfusion (e.g., PE) |
| V/Q mismatch typically leads to _________ without _________. | Hypoxia without hypercapnia |
| V/Q mismatch vs. shunt: Which is responsive to supplemental oxygen | V/Q mismatch |
| Causes of shunts (3) | - Atelectasis - Fluid buildup in alveoli (pulmonary edema, pneumonia) - Congenital heart disease (R-to-L flow) |
| Alveolar-arterial oxygen difference (A-a gradient) is normal when __________ is the cause of hypoxemia. It is increased in most other causes. | hypoventilation |
| Low-flow oxygen delivery systems (2) | Nasal cannula Simple face mask |
| Flow rate (L/min) and max FiO2 for low-flow O2-delivery systems | Nasal cannula: 1-6 L/min; up to 40% FiO2 Simple face mask: 5-10 L/min; 40-60% FiO2 |
| High-flow oxygen delivery systems (3) | Venturi mask Nonrebreathing mask High-flow nasal cannula |
| Flow rate (L/min) and max FiO2 for high-flow O2-delivery systems | Venturi mask: 4-10 L/min - up to 40% FiO2 Nonrebreathing mask: up to 15 L/min - up to 70-90% FiO2 High-flow nasal cannula: up to 40 L/min - up to 40% FiO2 |
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