RT Journal Article SR Electronic T1 Orthostatic hypotension JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 561 OP 568 VO 52 IS 4 A1 Fetnat M. Fouad A1 Robert C. Tarazi A1 Emmanuel L. Bravo YR 1985 UL http://www.ccjm.org/content/52/4/561.abstract AB Orthostatic intolerance may be related to different causes. A combined investigative approach using a screening tilt test, blood volume determination, and hemodynamic evaluation has permitted classification of the disease into its different forms. A review of the authors' experience is summarized.