Long‐term outcomes in patients with postural orthostatic tachycardia syndrome with an average follow‐up of over 20 years

BACKGROUND: Postural orthostatic tachycardia syndrome (POTS) is a chronic form of orthostatic intolerance that primarily affects female patients. There are scarce data evaluating the long-term outcomes in POTS. OBJECTIVES: This study sought to evaluate the long-term impacts of POTS over multiple decades in adult patients. METHODS: Past research participants at the VUMC Autonomic Dysfunction Center Research Unit (symptomatic ≥10 years) were recruited to participate in the study. A custom survey was administered at one time point. Participants were grouped as IMPROVED or NOT IMPROVED based on symptom course over time. Continuous data are reported as median (25th, 75th). RESULTS: Patients with POTS (n = 44; 98% female) were included in the analysis (62% response rate). Patient age at the time of survey was 48 (38, 54) years, with 23 (15, 27) years from POTS symptom onset, and 17 (12, 24) years from POTS diagnosis. Since diagnosis, symptoms completely resolved in 2%, improved in 46%, worsened in 25%, were unchanged in 11%, and demonstrated a variable symptom course in 16%. Patients who were NOT IMPROVED were more likely than those IMPROVED to have neuropathy, gastroparesis, and overactive bladder symptoms. CONCLUSIONS: In a cohort of adult patients with POTS who received care at a national referral center for autonomic disorders, almost half reported their POTS symptoms as improved 10 or more years after symptom onset. Most patients with POTS experienced ongoing symptoms for many years after diagnosis.