title: The importance of derived 12-lead electrocardiography in the interpretation of arrhythmias detected by Holter recording.
abstract: Holter monitoring has been used extensively for the detection, diagnosis, and evaluation of therapy for cardiac arrhythmias. The availability of three-channel monitors allows for the recording of vectorcardiographic leads X, Y, and Z. One method, which was recently described by Dower et al., (J Electrocardiol 1988;21:5182-7), uses modified vectorcardiographic leads and allows for the acquisition of a derived 12-lead ECG of selected rhythm strips during the recording. In the present study, we evaluated the usefulness of the derived 12-lead ECG in the detection of P-wave and ST-segment shifts, assessment of QRST changes, and distinction between ventricular ectopic and aberrant supraventricular complexes. Our preliminary findings indicate that careful analysis of the derived 12-lead ECG provides additional information for a more accurate diagnosis of arrhythmias that are detected by the Holter monitor. The clinical importance and cost-effectiveness of the derived 12-lead ECG needs further evaluation.
authors.affiliation: Section of Cardiology, St. Paul-Ramsey Medical Center, MN 55101.
authors.forename: P
authors.initials: P
authors.lastname: Denes
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D002037:Bundle-Branch Block / Q000175:diagnosis; D005117:Cardiac Complexes, Premature / Q000175:diagnosis; D016757:Death, Sudden, Cardiac; D004562:Electrocardiography / Q000379:methods*; D015716:Electrocardiography, Ambulatory; D006801:Humans; D012815:Signal Processing, Computer-Assisted; D013610:Tachycardia / Q000175:diagnosis; D014672:Vectorcardiography