Energy Efficient medical equipment design is the current research trend in medical science. Now, scientists are shifting focus toward energy efficient medical equipment design, ECG machine is the commonly used medical equipment. If any medical equipment is consuming less power than the traditional counterpart, then the whole medical system will be more greener or energy efficient. Finally, it reduces the cost of medical treatment. In this work, we are going to design and implement energy efficient ECG machine using LVDCI (Low Voltage Digitally Control Impedance), SSTL (Stub Series Terminated Logic) and HSTL (High Speed Transistor Logic) I/O standard.