Biometric Data
What we want to measure
- bmp (HR, contractions (beats) of heart per min)
- Bloodpressure
- Weight/body composition (body water)
- Blood sugar
- 90 ICU (intensive care unit) patients --> 200 patient-days of real-time signals
- Signal & periodic measurement (bedside monitor)
- Length: at least 20 h, many 40 or more
- Divided into files each containing 10 min of recorded
| Type | Definition |
|---|---|
| qrs | ECG beat labels, all beats labelled normal) for all records |
| al | annotations for alarms related to changes in the patient's status |
| in | annotations related to changes in the functioning of the monitor) for all records after 055 |
| abp | arterial blood pressure |
| pap | pulmonary arterial pressure |
| cvp | central venous pressure (Blutdruck vor dem rechten Vorhof Herzens in oberen Hohlvene |
| ple | fingertip plethysmograph (Volumenschwankungen von Körperteilen / Organen graphisch registiert |
- ABP: Aterial Blood Pressure
- HR: Heart Rate
- SPO2: peripheral capillary oxygen saturation
- PULSE:
- RESP: Respiration
- NBP: Noninvasive Blood Pressure
--> sometimes zero
Example 037 (01 bis 186) (Example 037)
Example 212 (01 bis 248) (Example 212)
Example 208 (Example 208)
- variety of digitized physiologic signals in each recording
MGH/MF Waveform Database (MGH/MF Waveform Database)
- electronic recordings of hemodynamic and electrocardiographic waveforms of stable and unstable patients in critical care units, operating rooms, and cardiac catheterization laboratories
- Recordings from 250 patients
- Individual recordings vary in length from 12 to 86 minutes, and in most cases are about an hour long
- Patient Guide: additional info age, sex, diagnoses, pertinent medical history, ECG interpretation, ventilation, a timeline of events that occurred during the recording, and additional clinical observations
- Typical recording: ** 3 ECG leads ** arterial pressure ** pulmonary arterial pressure ** central venous pressure, respiratory impedance ** airway CO2 waveforms ** Some recordings: intra-cranial, left atrial, ventricular and/or intra-aortic-balloon pressure waveforms, ECG calibration, pressure zero, pressure calibration, pressure/catheter frequency response tests
(Quantitative Dehydration Estimation)
- Quantitative estimation of dehydration (total body water loss) using bioimpedance measurements, temperature measurements, salivary samples, and sweat sample
- The task is to estimate total body water (TBW) loss using: ** bioimpedance measurements ** temperature measurements ** salivary samples ** sweat samples
- TBW loss was induced by 120 minutes of physical exercise without fluid intake
- Physical exercise consisted of running on an indoor treadmill and was partitioned into 8 intervals of 15 minutes
- Every 15-minute running interval was followed by an 8-minute resting break in which bioimpedance, temperature, sweat, and saliva were collected / measured
- TBW loss was assumed to be equal to the change in body weight, which was measured using a high-precision scale (+- 5 g accuracy)
InBody 720: Using a diverse range of frequency from 1kHz to 1MHz