- “Patients with neurogenic orthostatic hypotension have a fall in blood pressure great than or equal to 20/10 mm Hg with 3 minutes of assumption of an upright posture.
- Neurogenic orthostatic hypotension can often be differentiated from vasovagal syncope (a neurally mediated syncope) by its differing hemodynamic patterns during tilt table test and differing clinical characteristics.”
Clinical comparison of vasovagal syncope and neurogenic orthostatic hypotension
| Features | Vasovagal Syncope | Neurogenic Orthostatic Hypotension |
|---|---|---|
| Typical age | Any age; first episode usually in second or third decade |
>50 y |
| Gender (% female) | 60% | 40% |
| Symptoms with body position change |
After prolonged sitting or standing |
Immediately with sitting or standing |
| Syncope | +++ | ++ |
| Presyncope | + | +++ |
| Orthostatic Hypotension | +/− (usually only at time of faint) |
+++++ |
| Hemodynamic pattern with head-up tilt |
Sudden drop in BP and HR | Early and progressive decline in BP |
The table is from Cardiol Clin. 2013 Feb; 31(1): 89–100.
Read the following article for details
Cardiol Clin. 2013 Feb; 31(1): 89–100. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3589989/