HyperkalemiaHypokalemiaPhenolphthaleinPotassiumResins, SyntheticDiureticsSodiumPotassium ChannelsPotassium DeficiencyElectrolytesBendroflumethiazideMembrane PotentialsChlorthalidonePotassium IsotopesPotassium ChlorideChloridesOuabainSpironolactonePotassium, DietaryAldosteroneWater-Electrolyte BalanceSerumFludrocortisoneTime FactorsHyperaldosteronismOsmolar ConcentrationExtracellular SpaceTetraethylammonium CompoundsPotassium RadioisotopesHypokalemic Periodic ParalysisReninCesiumRenal DialysisHydrochlorothiazideMicroelectrodesRubidiumPotassium Channel BlockersAction PotentialsAlbuterolPotassium Channels, Inwardly RectifyingSodium BicarbonateBlood PressureCyclopenthiazideMineralocorticoid Receptor AntagonistsBufo bufoElectrophysiologyHypertensionLithiumBiological Transport, ActiveSuccinylcholinePotassium Channels, Voltage-GatedParalyses, Familial PeriodicPotassium CompoundsEndolymphFurosemideSodium Chloride Symporter InhibitorsCell Membrane PermeabilityCalciumDose-Response Relationship, DrugAnuraDouble-Blind MethodElectric ConductivityTetraethylammoniumStrophanthinsMagnesiumArrhythmias, CardiacSerum AlbuminEpinephrineElectrocardiography