| Symbol | Description | Frequency | References |
| ECG | Electrocardiogram | 8 | [37, 38, 40, 46, 47, 49, 50, 52] | EEG | Electroencephalography | 8 | [37ā40, 47, 49, 50, 52] | HR | Heart Rate | 5 | [41, 47, 49, 50, 54] | BP | Blood Pressure Rate | 5 | [41, 47, 49, 50, 54] | PR | Pulse Rate | 5 | [41, 49, 50, 52, 54] | EMG | Electromyography | 2 | [52, 54] | Oximetry | Oximetry Technology | 1 | [49] | BT | Body Temperature | 1 | [50] | RP | Respiratory Rate | 1 | [46] | SpO2 | Oxygen Saturation | 1 | [46] |
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