pubmed-article:8509530 | pubmed:abstractText | The purpose of this study was to compare clinical outcomes and tilt test variables between a single-stage tilt test with an infusion of 5 micrograms/min of isoproterenol and a conventional multistage test with infusions of 0, 2 and 5 micrograms/min of isoproterenol in three successive stages. | lld:pubmed |