Pulmonary physiology is essential for understanding hypoxemia, respiratory failure, oxygenation, V/Q mismatch, and shunt physiology. In this episode, we review ventilation-perfusion relationships, V/Q mismatch, pulmonary shunting, and the key differences between these mechanisms of impaired oxygenation.
• Ventilation and perfusion basics
• Normal V/Q relationships in the lung
• What V/Q mismatch means
• Low V/Q physiology
• High V/Q physiology
• What pulmonary shunt means
• Right-to-left shunt physiology
• Intrapulmonary and intracardiac shunts
• How V/Q mismatch causes hypoxemia
• How shunting causes hypoxemia
• Response to supplemental oxygen
• A-a gradient and oxygenation assessment
• Difference between V/Q mismatch, shunt, and dead space
• Common clinical examples
• Pneumonia, pulmonary edema, ARDS, atelectasis, COPD, asthma, and pulmonary embolism
• Practical application in respiratory failure and critical care
Watch the full video on YouTube:https://www.youtube.com/watch?v=gPrdV99D2qs
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