Was the diagnosis really postural orthostatic tachycardia syndrome?

The authors correctly point out that currently accepted criteria for a diagnosis of Postural Orthostatic Tachycardia Syndrome in adolescents (12–19 years of age) include a heart rate increase of 40 beats/minute or more within 10 minutes of upright posture, in the absence of orthostatic hypotension (20/10 mmHg decrease). Conflicts of interest K.B.: none; S.R.R.: Consultant for Lund beck NA Ltd and Theravance Biopharma, Chair, Data Safety and monitoring Board for Arena Pharmaceuticals; Cardiac Arrhythmia Network of Canada (CANet; London, ON, Canada) Network Investigator; Medical Advisory Board of Dysautonomia International and POTS UK, both without financial compensation. Sheldon RS, Grubb BP, Olshansky B, et al. 2015 heart rhythm society expert consensus statement on the diagnosis and treatment of postural tachycardia syndrome, inappropriate sinus tachycardia, and vasovagal syncope.