MedicalResearch.com Interview with: Pam R. Taub, MD, FACC, FASPC Director of  Step Family Foundation Cardiovascular Rehabilitation and Wellness Center Associate Professor of Medicine UC San Diego Health System Division of Cardiovascular Medicine MedicalResearch.com: What is the background for this study? Would you briefly explain what is meant by postural orthostatic tachycardia syndrome?  Is it more common in patients who have incompletely recovered from a COVID-19 infection?  Response: Postural Orthostatic Tachycardia Syndrome (POTS) is a, complex multisystem clinical syndrome Patients experience a wide spectrum of symptoms of varying severity, which are often debilitating.  Upon assuming an upright standing position from being supine, patients experience an increase in heart rate by 30 beats per minute (bpm) from supine position, This is often accompanied by lightheadedness, palpitations, dyspnea, mental clouding (“brain fog”), headaches. POTS can occur after infections as it thought to be triggered by the immune system .  The hypothesis is that when the body is fighting an infection some of the antibodies it produces can attack our regulatory systems that control heart rate and blood pressure. We are seeing an increase in POTS cases occurring after COVID-19 infection.  These patient are referred to as the “long haulers” These long haulers have elevated heart rate, fatigue, brain fog and shortness of breath with activity consistent with POTS. We are seeing that  COVID-19 is another infection that can lead to POTS. Some articles on this https://www.thedenverchannel.com/news/national/coronavirus/some-covid-19-survivors-being-diagnosed-with-syndrome-called-pots (more…)