When should we not put the good lung down and bad lung up?

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Multiple Choice

When should we not put the good lung down and bad lung up?

Explanation:
Gravity moves more blood to the lung that’s down (dependent), so for unilateral lung problems the usual move is to keep the healthier lung down to optimize oxygenation. But with a pulmonary hemorrhage, the priority shifts to limiting bleeding. Keeping the bleeding lung uppermost (not dependent) reduces blood flow to that side and helps control the bleed. So the scenario where the common “good lung down” positioning isn’t used is when there’s active pulmonary hemorrhage.

Gravity moves more blood to the lung that’s down (dependent), so for unilateral lung problems the usual move is to keep the healthier lung down to optimize oxygenation. But with a pulmonary hemorrhage, the priority shifts to limiting bleeding. Keeping the bleeding lung uppermost (not dependent) reduces blood flow to that side and helps control the bleed. So the scenario where the common “good lung down” positioning isn’t used is when there’s active pulmonary hemorrhage.

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