Cardiology electrocardiogram overreads rarely influence patient care outcome

Objective: The value of electrocardiogram (ECG) overreads of emergency department (ED) tracings have been questioned in the literature. This review was designed to assess the validity of this criticism.

Methods: In this university teaching hospital ED, following the normal quality assurance protocol, each abnormal ECG is reviewed the following day against the corresponding chart; and if the official reading from cardiology is discordant from the initial clinical one, the patient and/or their physician is contacted. If necessary, the patient is instructed to return to the ED or to their private physician's office. This study is a retrospective review of those ECG overreads for a 21-month period, as well as a summary of those patients who required follow-up care.

Results: There were 38,490 patients seen with ECGs performed during the study interval. Of these, 16,011 were discharged and 22,479 were admitted from a total patient volume of 117,407. Of those 16,011 patients discharged, follow-up was deemed necessary in 22 patients whose official readings were discordant from the interpretation of the original clinician. Three patients were lost to follow-up (no phone, no address). Review of the tracings and patient/physician follow-up of the 19 remaining patients resulted in a significant change of therapy in 2 patients (admission). The remainder of the abnormal tracings were deemed, after patient or private physician follow-up, to be not significant or to mandate no change in management.

Conclusion: Official cardiology overreads seldom affect the clinical outcome of patient care delivered in the ED setting.