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Figure 3 Serial radial artery pulse contour changes in response to a positive upright tilt test. Electrocardiographic lead II and blood pressure are displayed. (A) Supine position. (B) Early-tilt. (C) Early to mid-tilt.
(D) Mid to late-tilt. (E) Faint. See text for description. Time scale = 50 mm/s. Blood pressure scale = 0 to 200 mm Hg.
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