Table of Contents
Journal of Medical Engineering
Volume 2016, Article ID 6931347, 16 pages
Review Article

An Engineering Perspective of External Cardiac Loop Recorder: A Systematic Review

1Department of Electronics and Instrumentation Engineering, GITAM University, Bangalore Campus, Bangalore, India
2Center for Medical Electronics and Computing, M.S. Ramaiah Institute of Technology, Bangalore, India

Received 29 June 2016; Accepted 28 September 2016

Academic Editor: Sotirios Korossis

Copyright © 2016 Avvaru Srinivasulu and N. Sriraam. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


External cardiac loop recorder (ELR) is a kind of ECG monitoring system that records cardiac activities of a subject continuously for a long time. When the heart palpitations are not the frequent and nonspecific character, it is difficult to diagnose the disease. In such a case, ELR is used for long-term monitoring of heart signal of the patient. But the cost of ELR is very high. Therefore, it is not prominently available in developing countries like India. Since the design of ELR includes the ECG electrodes, instrumentation amplifier, analog to digital converter, and signal processing unit, a comparative review of each part of the ELR is presented in this paper in order to design a cost effective, low power, and compact kind of ELR. This review will also give different choices available for selecting and designing each part of the ELR system. Finally, the review will suggest the better choice for designing a cost effective external cardiac loop recorder that helps to make it available even for rural people in India.