JWCN_V1_N3_RP4 S. Ganesh R. Amutha Journal On Wireless Communication Networks 2320 - 2351 1 3 20 34 Wireless Sensor Networks, ECG, Energy Efficiency, Patient Monitoring, Security, Power Management A sensor network is an infrastructure comprised of sensing (measuring), computing, and communication elements that gives an administrator the ability to instrument, observe, and react to events and phenomena in a specified environment. Patients who have survived cardiac attack or other physiological problems are at a higher risk of sudden cardiac death. Many of these patients are living at home without any kind of cardiac monitoring systems. By using a wearable monitoring system for detection of ECG systole, Diastole, Flux, Bodyemperature, Weight, Accelerometer Latitude and Longitudinal location, it is possible to alert healthcare professional to the patient's condition so that the necessary action for an emergency rescue can occur. A special purpose sensor network here, designed to operate autonomously to connect varies medical sensors placed on the human body. In this system, the author effectively monitors the patients physiological status such as ECG, Body temperature, systole, diastole, Heartbeat, flex, Accelerometer and successfully processed in the transmitter kit, which is attached in the patients body. Effectively transmits the data from the transmitter kit through a GPRS to the receiver which is located in the hospital server. Hence the patients need not to be in observatory room or under any supervision of health care professionals, and the mobility will be greatly achieved in our work. In addition to that they are tracked the patient's location through GPS continuously, by obtaining the Latitude and longitudinal position can easily make emergency rescue operation. Introduction of effective medical monitoring & other applications continuously will offer flexibilities and cost saving options to both health care professionals and patients. Here, they produce an efficient, reliable, and secure platform that can meet increasing needs in e-healthcare applications. These applications require to support multiple data rates with reliable and energy efficient data transmission which can be achieved by the earlier developed Efficient and Secure Routing Protocols (ESRP). October - December 2012 Copyright © 2012 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=2051