hypobaric solution

hypobaric solution
a solution having a specific gravity less than that of a standard of reference, such as one used for spinal anesthesia having a specific gravity less than that of the spinal fluid, causing it to migrate upward and produce anesthesia above the level of injection.

Medical dictionary. 2011.

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  • hypobaric — 1. Pertaining to pressure of ambient gases below 1 atmosphere. 2. With respect to solutions, less dense than the diluent or medium; e.g., in spinal anesthesia, a h. solution has a density lower than that of spinal fluid. [ …   Medical dictionary

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  • Hyperbaric — Pertaining to gas pressures greater than 1 atmosphere* of pressure. Also pertaining to solutions that are more dense than the medium to which they are added. The term hyperbaric is derived from Greek roots: hyper meaning high, beyond, excessive,… …   Medical dictionary

  • Spinal anaesthesia — Spinal analgesia, (or commonly called spinal anesthesia or sub arachnoid block (S.A.B.)) is a form of regional anaesthesia involving injection of a local anaesthetic into the cerebrospinal fluid (CSF), generally through a fine needle, usually 3.5 …   Wikipedia

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