This paper presents light weight, wireless, ambulatory system that is used to monitor cardiovascular disease, which is one of the most prevalent and costly health problem in the world. This system consists of ECG device which acquires the ECG signals which are then transmitted to the microcontroller and processed by expert system to detect the abnormalities. The alert signal is then sent to the caretaker. The circuit is simulated using Multisim and implemented using microcontroller.