File:POTS.png

Summary
Postural Orthostatic Tachycardia Syndrome (POTS) causing fainting during a heads-up tilt test (HUT) Source: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0128962 Citation: Nilsson D, Sutton R, Tas W, Burri P, Melander O, Fedorowski A (2015) Orthostatic Changes in Hemodynamics and Cardiovascular Biomarkers in Dysautonomic Patients. PLoS ONE 10(6): e0128962. doi:10.1371/journal.pone.0128962 Fig 3. Pronounced orthostatic tachycardia (≈POTS) and vasovagal reflex syncope (woman, 24 years). This patient is representative of highest quartiles of ΔHR (i.e. Q4) both after 3 min of HUT and at the maximal heart rate during HUT.

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0128962 Citation: Nilsson D, Sutton R, Tas W, Burri P, Melander O, Fedorowski A (2015) Orthostatic Changes in Hemodynamics and Cardiovascular Biomarkers in Dysautonomic Patients. PLoS ONE 10(6): e0128962. doi:10.1371/journal.pone.0128962

Fig 3. Pronounced orthostatic tachycardia (≈POTS) and vasovagal reflex syncope (woman, 24 years). This patient is representative of highest quartiles of ΔHR (i.e. Q4) both after 3 min of HUT and at the maximal heart rate during HUT.