<qa>  What is active atrial fibrillation not allowed?- Active uncontrolled systemic infections defined as infections causing fevers and infections requiring intravenous antibiotics when intravenous antibiotics have been administered for less than 72 hours, active coagulation disorders or other major uncontrolled medical illnesses of the cardiovascular, respiratory, endocrine, renal, gastrointestinal, genitourinary or immune system, history of myocardial infarction, history of ventricular tachycardia or ventricular fibrillation, active cardiac arrhythmias active atrial fibrillation is not allowed, resolved atrial fibrillation not requiring current treatment is allowed anticoagulants count as current treatment , active obstructive or restrictive pulmonary disease, active autoimmune diseases such as rheumatoid arthritis. 