No abstract available
MeSH terms
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Adult
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Aged
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Anesthesia, General*
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Apnea / blood*
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Double-Blind Method
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Humans
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Hypoxia / blood
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Hypoxia / prevention & control*
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Insufflation / methods*
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Middle Aged
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Oxygen / administration & dosage*
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Oxygen / blood
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Pharynx
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Random Allocation