Dr. Nicholas Gall is a Consultant Cardiologist specializing in the management of cardiac rhythm disorders, including both fast and slow heart rhythms, and the investigation, management, and prevention of blackouts and Sudden Cardiac Death. He is practiced in invasive treatments including pacemakers, cardioversion, and implantable loop recorder insertion. Dr. Gall qualified in 1993 from Guy's and St. Thomas' Hospitals Medical School, began training in cardiology in 1996, and became a consultant in 2004. Dr. Gall has particular expertise in causes of collapse and loss of consciousness, especially autonomic cardiovascular conditions such as Postural Orthostatic Tachycardia Syndrome (PoTS), Inappropriate Sinus Tachycardia, and Orthostatic Intolerance. He has diverse research interests, particularly in PoTS, and has published widely in the field of cardiology. He speaks at national and international conferences and runs the PoTS masterclass and the London Syncope meeting. He is a patron of PoTS-UK and a medical adviser to STARS. His areas of expertise include cardiac electrophysiology, arrhythmias, palpitations, dizziness, blackouts, faints, collapses of uncertain cause, inherited heart problems, Postural Orthostatic Tachycardia Syndrome (POTS), inappropriate sinus tachycardia, orthostatic intolerance, chronic fatigue, chest pain, breathlessness, sudden death prevention, autonomic dysfunction, postural hypotension, orthostatic hypotension, and autonomic failure.