Rho R, et al. - As direct comparison between proprietary ambulatory ECG monitor (AEM) monitors have displayed variations in diagnostic yield, even when the arrhythmia occurs during identical monitoring periods, researchers compared the ECG signal quality and diagnostic utility of two single vector patch AEMs: the ZioPatch Monitor, Zio-XT and the Carnation Ambulatory Monitoring, CAM. Findings demonstrate that differences in specific rhythm diagnosis and ECG clarity may exist between commercially available patch ambulatory ECG monitors. In this study, a CAM AEM was found to have higher rhythm specificity.