Table 3.
No initial orthostatic hypotension
| Event | Non-IOH POTS (n = 19) |
Non-IOH Controls (n = 28) |
||||||
|---|---|---|---|---|---|---|---|---|
| Time | SBP | DBP | HR | Time | SBP | DBP | HR | |
| Baseline | 124 ± 13* | 58 ± 9 | 76 ± 13 | 112 ± 11 | 57 ± 9 | 73 ± 8 | ||
| Stand | 0 | 124 ± 13 | 57 ± 8 | 91 ± 23* | 0 | 114 ± 11 | 55 ± 10 | 77 ± 10 |
| BP nadir | 14 ± 6 | 104 ± 19* | 45 ± 11 | 110 ± 11 | 12 ± 4 | 86 ± 14 | 42 ± 7 | 109 ± 8 |
| HR peak | 23 ± 6* | 139 ± 26* | 54 ± 21 | 124 ± 17 | 16 ± 5 | 109 ± 21 | 55 ± 12 | 118 ± 11 |
| BP recovery | 26 ± 14 | 155 ± 28* | 79 ± 17* | 107 ± 16* | 22 ± 6 | 135 ± 21 | 63 ± 13 | 89 ± 21 |
| HR recovery | 54 ± 37* | 151 ± 25* | 71 ± 9 | 92 ± 17* | 28 ± 9 | 129 ± 19 | 59 ± 11 | 72 ± 12 |
| Steady trend | 99 ± 64* | 137 ± 18* | 64 ± 10 | 108 ± 20* | 58 ± 29 | 124 ± 13 | 62 ± 10 | 91 ± 18 |
Time of event, blood pressure (BP), and heart rate (HR) data are shown as means ± SD; n = no. of patients. DBP, diastolic blood pressure; IOH, initial orthostatic hypotension; POTS, postural tachycardia syndrome; SBP, systolic blood pressure.
*
P < 0.05 compared with controls.