RT Journal A1 Gardin JM, Belic N, Singer DH T1 PSeudodysrhythmias in ambulatory ecg monitoring JF Archives of Internal Medicine JO Archives of Internal Medicine YR 1979 FD July 1 VO 139 IS 7 SP 809 OP 812 DO 10.1001/archinte.1979.03630440067022 UL http://dx.doi.org/10.1001/archinte.1979.03630440067022 AB Artifacts mimicking a variety of dysrhythmias occur relatively frequently in ambulatory ECG (Holter) monitoring records. Proper interpretation is imperative if serious therapeutic errors are to be avoided. Two-channel recording systems may facilitate recognition of some, but not all, of these artifacts. Pseudodysrhythmias may mimic paroxysmal supraventricular tachycardia and atrial fibrillation, atrial dissociation, extrasystoles, and sinus pauses. There are several causes of pseudodysrhythmias. Failure to recognize these patterns may result in serious errors in patient management.(Arch Intern Med 139:809-812, 1979)