Clinical characteristics of study population (n = 671) including haemodynamic parameters observed during head-up tilt test.

<p>All values are given as mean ± standard deviation, unless otherwise stated.</p><p>Clinical characteristics of study population (n = 671) including haemodynamic parameters observed during head-up tilt test.</p

Pronounced classical orthostatic hypotension and syncope (man, 65 years).

<p>This patient is representative of highest quartiles of ΔSBP (i.e. Q4) both after 3 min of HUT and at the minimal SBP during HUT.</p

ORs log regression Q4 vs Q1 adj age sex delta HR max log transformed.

<p>ORs log regression Q4 vs Q1 adj age sex delta HR max log transformed.</p

ORs log regression Q4 vs Q1 adj age sex delta SBP 3min log transformed.

<p>ORs log regression Q4 vs Q1 adj age sex delta SBP 3min log transformed.</p

Normal hemodynamic response to passive head-up tilt test and nitroglycerin (woman, 32 years).

<p>This patient is representative of lowest (reference) quartiles of both ΔSBP and ΔHR (i.e. Q1).</p

Normal hemodynamic response to passive head-up tilt test and vasovagal reflex induced by nitroglycerine (man, 50 years).

<p>This patient is representative of lowest (reference) quartiles of both ΔSBP and ΔHR (i.e. Q1).</p

ORs log regression Q4 vs Q1 adj age sex delta HR 3 min log transformed.

<p>ORs log regression Q4 vs Q1 adj age sex delta HR 3 min log transformed.</p