isobaric spinal anesthesia

i·so·bar·ic spi·nal an·es·the·si·a

spinal anesthesia of same density as cerebrospinal fluid so that the level of anesthesia is not influenced by a change in the position of the patient.
References in periodicals archive ?
Sharrock, "The direction of the whitacre needle aperture affects the extent and duration of isobaric spinal anesthesia," Anesthesia & Analgesia, vol.