Patients Accurate, medically-approved information for patients from the Arrhythmia Alliance. Please follow the links below for a wealth of information on heart rhythm disorders and the activities of the worlds leading heart rhythm charity. About arrhythmiasArrhythmia basicsTypes of arrhythmiaInfo for kidsFAQsOther languages ConditionsBradycardiaTachycardiaAtrial fibrillationSudden cardiac arrestBrugada syndromeLong QT syndromeInnapropriate sinus tachycardiaSupraventricular tachycardiaWolff Parkinson White syndrome DiagnosisHeart monitoringEP studyGeneticsTilt testILR TreatmentsDrug treatmentPacemakerICDCatheter ablation CRTWhat is an AED? Living with a heart rhythm disorderPatient storiesRemote monitoringPhysical activityTravelPatient groupsFind a specialistNHS structure DownloadsAvailable information sheetsAvailable information bookletsAF checklistPalpitations checklistHeart rhythm checklistBlackouts checklist