No abstract available
MeSH terms
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Air
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Amides / administration & dosage
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Anesthetics, Local / administration & dosage
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Catheterization, Peripheral / instrumentation*
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Female
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Humans
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Middle Aged
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Needles*
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Nerve Block / instrumentation*
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Nerve Block / methods
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Ropivacaine
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Thoracic Vertebrae* / diagnostic imaging
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Ultrasonography, Doppler, Color
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Ultrasonography, Interventional
Substances
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Amides
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Anesthetics, Local
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Ropivacaine