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. 2020 Nov 24;95(21):e2854–e2865. doi: 10.1212/WNL.0000000000010749

Figure 1. Overview of abnormal blood pressure (BP) changes upon standing.

Figure 1

Different types of transient forms of orthostatic hypotension (tOH) (upper panel) and classic orthostatic hypotension (cOH) (lower panel). iOH40/20, iOH30/15, iOH20/10: initial orthostatic hypotension (iOH) with systolic BP fall ≥40/30/20 mm Hg or diastolic >20/15/10 mm Hg within 15 seconds upon standing, recovering at 30 seconds; delayed BP recovery: systolic BP fall ≥20 mm Hg at 30 seconds upon standing, but not meeting the criteria for cOH; OH1min, OH3min: sustained orthostatic BP fall ≥20 mm Hg systolic or ≥10 mm Hg diastolic within 1 or 3 minutes upon standing.