| hypobaric | 1. <physics> Pertaining to pressure of ambient gases below 1 atmosphere. 2. <chemistry> With respect to solutions, less dense than the diluent or medium; e.g., in spinal anaesthesia, a hypobaric solution has a density lower than that of spinal fluid. Origin: hypo-+ G. Baros, weight (05 Mar 2000) |
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| hypobaric spinal anaesthesia | <anaesthetics> Spinal anaesthesia in which spread of local anaesthetic solution in the subarachnoid space is controlled by adjusting the position of the patient when the density of the local anaesthetic solution is made less than the density of cerebrospinal fluid (i.e., hypobaric) by the addition of distilled water. (05 Mar 2000) |