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HeartVUE

A 30 seconds resting ECG is recorded by HEARTVUE of the 6 standard leads (IaVF), using only 4 electrodes from patient's wrists and ankles. Then the low-amplitude oscillations of ECG-signal are automatically selected and analyzed. So-called analyze of microalternations. That is fundamental difference from a standard ECG contour analysis.

The features of microalternations are showed the Myocardium index and another 9 indices, which detail the changes in heart zones, also intervals of de- and re-polarization. The averaged amplitudes of microalternations are mapped as dispersive 3D color portrait of heart.

Microalternations are sensitive indicators of total influence from physiological systems involved in the mechanisms of regulation of heart. So, HeartVue reacts to small changes of ionic balance in myocytes, displacement sympatho-adrenal activation and other metabolic changes, which dont show up in the morphology of ECG or ultrasound visualization of heart. Similarly HeartVue reacts to the hidden dynamics of the compensatory reaction of left ventricle, allowing time to identify the state of cardiac overload.

According to the results of testing on the PTB ECG database from National Metrology Institute of Germany, sensitivity 84% with specificity 73% for Myocardium index.

The complete system includes:

  • PC-ECG module KARDi2/4 with fixed USB cable
  • Clamp ECG electrodes
  • The CD disk with driver and CardioDM-06 software
  • Special fastener for the system fixation
  • USB key for the software protection
  • Optional PC and/or printer

Applications

  • Heart screening tool for cardiologists, general practitioners, clinics, hospitals and emergency medical facilities
  • Fitness system for independent control of the heart of visitors in health-improving and fitness club
  • Sport system for sports doctor and coach for quick estimation of the heart state of professional sportsmen during in training
Specification
ParameterValue
KARDi2/4 PC-ECG module
Number of channelsThe HeartVUE system has 3 monopolar channels. The ECG leads are calculated on the PC by CardioDM-06 software
Analog front endDC amplifiers
Input range (effective resolution for 500Hz output data rate)410 mV (2 uV)
Defibrillator protectionon base semi-conductors elements
Input DC impedancegreater 70 MOhm according to N electrode
Check electrode connectionChecking connection during registration by measure of DC offset
Analog-to-digital conversionSigma-delta modulation with frequency 2048kHz simultaneously on all channels, a digital filtration and decimation up to frequency 16kHz
Digital signal processingFiltration and decimation up to 500 Hz output data rate (20-bit resolution). Internal low pass filters has the -3 dB level on 150 Hz and 5% level on 100 Hz accordingly
Connectors type for electrode4 mm banana jacks
Galvanic isolationReinforced according to IEC60601-1 from PC side
Power lineUSB
Voltage+5 V 10%
Computer InterfaceUSB1.1, full speed mode, plug-and-play support
Status indicators and modesBi-color LEDs indication: green-no error, active mode. The indicator is burning green during the new examinations making red-error occurred
USB cableMin length 3 m, fixed to module
Electrode cables lengthnot less than 140 cm
Dimensions of enclosure100x65x28 mm
Weight with cablesless 350 gram
Working temperature+10°C+35°C
Storage temperature+5°C...+40°C
Transportation temperature-30°C...+50°C
Humidityup to 97% without condensation
Mechanical resistanceAccording to IEC 60601-1

The HeartVUE system is a Class IIa device according to CD 93/94/ECC for medical devices and ciassified for CLASS ?? TYPE CF EQUIPMENT according to IEC 60601-1. The HeartVue is CE0535 certificated.

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