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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: Cardiol Clin. 2013 Feb;31(1):101–109. doi: 10.1016/j.ccl.2012.09.004

Table 2.

Diagnostic Criteria for Postural Tachycardia Syndrome

  • HR increase ≥30 bpm from lying to standing

  • Absence of significant drop in BP with standing

  • Positional symptoms
    • ○ Many symptoms are worse with upright posture and improve on lying down
    • ○ Some symptoms can be non-positional (e.g. fatigue, headache)
  • Chronic symptoms
    • ○ Duration ≥6 months
  • Absence of other overt cause for tachycardia
    • ○ E,g, acute blood loss, prolonged bedrest, hyperthyroidism, tachycardia promoting medications