Research Article
Orthostatic Intolerance and Postural Orthostatic Tachycardia Syndrome in Joint Hypermobility Syndrome/Ehlers-Danlos Syndrome, Hypermobility Type: Neurovegetative Dysregulation or Autonomic Failure?
Table 4
Heart rate and blood pressure responses after head-up tilt test.
| | HR response ratio (%) | HR mean difference (bpm ± SD) | | BP response ratio (%) | SBP mean difference (mmHg ± DS) | DBP mean difference (mmHg ± DS) |
| Normal (HR increase between 10 and 19 bpm) | 7/35 (20) | 12.5 ± 2.3 | Normal | 34/35 (97) | 5.9 ± 5.8 | 6.5 ± 5.8 | POTS (HR increase > 30 bpm) | 17/35 (48.6) | 32 ± 6.5 | Orthostatic hypotension (reduced peripheral vessel response) | 1/35 (3) | | | Reduced orthostatism tolerance (HR increase from 20 to 29 bpm) | 11/35 (31.4) | 20.4 ± 1.4 |
|
|
HR: heart rate. BP: blood pressure. DBP: diastolic blood pressure. SBP: systolic blood pressure.
|