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>
POTS is diagnosed using the <b >tilt table test</b>, or the <b >active standing test</b>, and these have been shown to be comparable in accuracy.<a href="https://www.ncbi.nlm.nih.gov/pubmed/23731914/" target="_blank" rel="nofollow" >1</a> <br />
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The active standing test is sometimes called the "poor man's tilt table test", and can easily be performed at home. The active standing test involves measuring the increase in your heart rate that occurs when you stand up from a relaxed lying down position. To perform the active standing test, you simply lie down horizontally and relax for 10 minutes, and at the end of this 10 minute period, measure your heart rate. Then stand up, and after two minutes standing, measure you heart rate again. After 5 minutes standing, measure your heart rate a third time, and after 10 minutes standing, measure it a fourth and final time. If any of your heart rate measurements taken on standing are faster by 27 beats per minute or more than your heart rate while lying down, then you have POTS.<br />
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Note that when using a tilt table, the threshold for diagnosis of POTS is an increase in heart rate of 30 beats per minute or more; but Streeten says that for the active standing test, the threshold for diagnosis is best set at 27 beats per minute or more. <br />
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Dr Raj suggests that for maximum sensitivity, testing for POTS should be performed in the morning, because POTS symptoms are worse in the morning.<a href="http://www.ncbi.nlm.nih.gov/pubmed/16943900/" rel="nofollow" target="_blank" >1</a> Note that those aged 12 to 19 years old must have an increase of at least 40 beats per minute in order to be diagnosed with POTS. <br />
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Further info on POTS: <br />
<a href="http://phoenixrising.me/research-2/the-perils-of-standing-orthostatic-intolerance-and-chronic-fatigue-syndrome-mecfs-i-the-evidence/the-perils-of-standing-orthostatic-intolerance-in-chronic-fatigue-syndrome-mecfs-ii-types" rel="nofollow" target="_blank" >Orthostatic Intolerance in CFS II</a><br />
<a href="http://dinet.org/index.php/information-resources/pots-place/pots-symptoms" rel="nofollow" target="_blank" >dinet.org – POTS Symptoms</a><br />
<a href="http://dinet.org/index.php/information-resources/pots-place/pots-detection" rel="nofollow" target="_blank" >dinet.org – POTS Diagnosis</a><br />
<a href="http://dinet.org/index.php/information-resources/pots-place/pots-what-helps" rel="nofollow" target="_blank" >dinet.org – POTS Treatment</a><br />
<a href="http://www.potsuk.org/" rel="nofollow" target="_blank" >www.potsuk.org</a><br />
<a href="http://www.potsuk.org/diagnosis" rel="nofollow" target="_blank" >www.potsuk.org – Diagnosis</a><br />
<a href="http://potsgrrl.blogspot.co.uk/p/what-is-pots.html" rel="nofollow" target="_blank" >POTSgrrl</a><br />
<a href="http://potsgrrl.blogspot.co.uk/p/pots-medications-and-treatments.html" rel="nofollow" target="_blank" >POTSgrrl – Treatments</a></p>