Introduction: POTS is defined by orthostatic intolerance with abnormal increase in heart rate (>30 beats or >120 beats/min within 10 min). We assessed the incidence in patients allocated to head-up tilt table test (HUTT), evaluated therapy and treatment response.
Methods: HUTT was performed in 120 patients from 2010 to 2012 (Task Force Monitor, 60-degree upright tilt for 30 minutes). Follow-up was done by phone or during ambulatory treatment.
Results: POTS was diagnosed in 19/120 patients (16%), more often in women (11:8). 3 patients suffered from orthostatic hypotension (OH), in 5 patients a (pre)syncope occurred. Therapy included increased dietary fluids, stockings, salt, counter maneuvers, active standing and moderate exercise. 3 Patients received beta blocker, 1 patient midodrine, a loop recorder was implanted in 1 patient, a pacemaker in 2 patients. Follow-up (mean 53 weeks) was performed in 18/19 patients. 60/81 of the recommended therapies were adopted by patients (74%), syncopes were reduced from 7,4 to 2,5/patient (- 67%).
Conclusions: The prevalence of POTS was 16%. Compliance was good, syncopes were reduced by diagnosis, education and therapy. Non medical therapies are indicated as first line therapy.