I have been experiencing intermittent PACs, PVCs, short atrial runs, shortness of breath, and chest pain. I have had a 30 day event monitor, a cardiac echo, a bubble study, EKG, and a treadmill stress test, which showed nothing significant. I have systematic sarcoidosis, which has also presented neurologically. Thyroid function is normal, calcium is normal, potassium is normal, adrenal function is normal, and I m not on any meds. Low bp and normal blood sugar. Any thoughts as to what could be explored next? Could the neuro sarc interfere with conduction from time to time? I am 41, F, 5 6 , 200lbs