Baricity

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The baricity is a clinically relevant size of a local anesthetic . It describes the relationship between the densities of local anesthetic and cerebrospinal fluid at 37 ° C. The specification of the barity supplements the specification of the temperature-dependent density or the gravitation- dependent specific weight . While a substance of the same density ( isobaric ) remains in the area of ​​the injection site when performing spinal anesthesia after the intrathecal injection, a substance with a higher density ( hyperbaric ) sinks , which is used to control the spread of the effect.

literature

  • F. Gerheuser, D. Craß: Spinal anesthesia. Anesthetist. 2005 Dec; 54 (12): 1245-67. Review. PMID 16317479