| ECG | Electrocardiogram |
| IEEE | Institute of Electrical and Electronics Engineers |
| AHA | American Heart Association |
| ANSI | American National Standards Institute |
| AAMI | Association for the Advancement of Medical Instrumentation |
| AFE | Analog Front-End |
| USB | Universal Serial Bus |
| EMC | Electromagnetic Compatibility |
| IEC | International Electrotechnical Commission |
| OS | Operating System |
| CMRR | Common Mode Rejection Ratio |
| IC | Integrated Circuit |
| SPI | Serial Peripheral Interface |
| ESR | Equivalent Series Resistance |
| PCB | Printed Circuit Board |
| RAM | Random Access Memory |
| MOPP | Means of Patient Protection |
| PSRR | Power Supply Rejection Ratio |
| ESD | Electrostatic Discharge |
| LSB | Least Significant Bit |
| p-p | peak to peak |
| WCT | Wilson Central Terminal |
| RLD | Right-Leg Drive |