Testing
<p>Fom: 'Chronic Fatigue Syndrome, A Roadmap for Testing and Treatment' <a href="https://sites.google.com/site/cfstestingandtreatmentroadmap/home">https://sites.google.com/site/cfstestingandtreatmentroadmap/home</a>
Orthostatic hypotension is diagnosed when, on standing from a sitting or lying position, there is a fall in systolic blood pressure of 20 mm Hg or more, and/or a fall in diastolic blood pressure of 10 mm Hg or more within 5 minutes from standing.<a href="http://phoenixrising.me/treating-cfs-chronic-fatigue-syndrome-me/problems-standing/dr-bells-test-orthostatic-intolerance-chronic-fatigue-syndrome" target="blank" rel="nofollow">1</a> In some people with OH, the drop in blood pressure can take up to 10 minutes to appear. If the occurrence of the blood pressure drop is delayed for more than 3 minutes after standing, this is called delayed orthostatic hypotension. In ME/CFS it is the delayed variety of orthostatic hypotension that usually occurs.
These blood pressure measurements can be made with an ordinary home blood pressure meter. Note that a blood pressure reading is expressed as systolic / diastolic, for example: 120 / 80.
Neurally mediated hypotension is diagnosed using a <strong>tilt table testthat</strong> keeps the patient in the upright position for 30 to 45 minutes, to observe whether syncope occurs (syncope is a temporary lost of consciousness due to a drop in blood pressure). More info on the diagnostic technique used for NMH is given <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC101078/#sec3title" target="blank" rel="nofollow">here</a>.
More info:
<a href="https://en.wikipedia.org/wiki/Orthostatic_hypotension" target="blank" rel="nofollow">Orthostatic Hypotension</a>
<a href="http://www.njcfsa.org/wp-content/uploads/2010/08/4-11-Patient-Unofrmationon-Neurally-Mediated-Hypotension-and-its-Treatment.pdf" target="blank" rel="nofollow">Neurally Mediated Hypotension and its Treatment</a>
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