BaclofenInfusion Pumps, ImplantablePerinephritisMuscle Relaxants, CentralMuscle SpasticityQuadriplegiaInjections, SpinalGABA-B Receptor AgonistsGABA AgonistsReceptors, GABA-BGABA-B Receptor AntagonistsInfusion PumpsProton Pump InhibitorsSodium OxybateMuscimolGABA AntagonistsPhosphinic AcidsIon Pumpsgamma-Aminobutyric AcidBicucullineReceptors, GABA-AOrganophosphorus CompoundsSodium-Potassium-Exchanging ATPaseGABA AgentsInfusions, Spinal