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6 Cards in this Set
- Front
- Back
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50% N2o (1:1 with other gas) increases volume of a bubble how much?
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50% n2o --> Double volume
75% n2o --> Quadruple volume |
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What is the MAC of halothane?
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0.75%
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In which procedures/situations should you avoid N2O?
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Ear tympamoplasty
Pneumothorax Air Embolism Closed eyeball surgery (esp. with injected air) Closed head surgery |
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Factors that increase MAC
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"College student - Salty young man, drinks all the time, just tried crack/meth this one time"
Young, CHRONIC ETOH, ACUTE cocaine/meth, Increased Na+, |
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Factors that decrease MAC
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Old, hypo/hyperthermia, ACUTE ETOH, Anemia, Po2<40, PACO2>95, Map <40, Decreased Sodium, Increased Calcium, PREGNANCY
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How does Low BP affect speed of gas uptake?
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Low BP means high Fa/Fi, so quicker uptake. Since the blood if going slowly through the alveoli, there is time for a high conc. to build up in the alveoli.
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