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10 Cards in this Set
- Front
- Back
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When is venous air embolus a danger?
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When the operative site is above the level of the heart, air can be entrained
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What are the effects of venous air embolism?
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hypoxia, hypercarbia (in blood, not lungs), bronchoconstriction, hypotension and CV collapse
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What is the most sensitive device to detect venous air embolism?
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TEE
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How is air visualized in a TEE?
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"fireflies"
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How is air detected with a transthoracic doppler?
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"millwheel murmur"
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What is the effect of venous air embolism on ETCO2?
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Sudden decrease
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How is air detected with an esophageal stethoscope?
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"millwheel murmur"
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What is the Tx for venous air embolism?
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Pack field, discontinue N2O, give 100% O2, aspirate blood/air form CVC, support hemodynamics, left-lateral position
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What potition is indicated for venous air embolism? Why?
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Left lateral position keeps air in the right side of the heart preventing enterance into arterial blood and migration of the embolus to the brain
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What anesthesia considerations are there for patients undergoing surgery with risk of venous air embolism?
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CVC for removal, don't use N2O
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