PinacidilCromakalimBenzopyransGuanidinesGlyburidePyrrolesNicorandilPotassium RadioisotopesPotassium ChannelsRubidium RadioisotopesMinoxidilVasodilator AgentsDiazoxidePicolinesKATP ChannelsParasympatholyticsGuinea PigsNiacinamideAdenosine TriphosphateMuscle RelaxationPotassium Channels, Inwardly RectifyingNifedipineDecanoic AcidsHydroxy AcidsSulfonylurea ReceptorsMuscle ContractionPotassium Channel BlockersPyransMuscle, Smooth, VascularVasodilationPotassiumMesenteric ArteriesSulfonylurea CompoundsMuscle, SmoothReceptors, DrugDogsAntihypertensive AgentsAorta, ThoracicMembrane PotentialsTracheaHeartRabbitsNitroprussideRubidiumNitroglycerinATP-Binding Cassette TransportersNorepinephrineUridine DiphosphateTolbutamideDose-Response Relationship, DrugPyridinesPotassium ChloridePortal VeinElectrophysiologyCharybdotoxin