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WIWE Mobile ECG Machine Introduction


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WIWE Mobile ECG Machine Introduction and their usage by UNO Hospital Solutions. Clinical-quality results after 1 minute. Prevention and health promotion: 3 out of 4 deaths can be prevented!

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WIWE Mobile ECG Machine Introduction

  1. 1. WIWE Message from the heart
  2. 2. Summary: •Used for recording and transfering ECG, SpO2 and Pedometer data to the WIWE application for evaluation •Capable of recording without a smartphone/tablet •Battery indicator LEDs on top and process indicator LEDs on the front •Runs with battery chargable through microUSB plug 2 important „developer” functions: •Hard reset: pushing the ON/OFF button for 10 seconds continously restarts the WIWE device (usefulness: connectivity, freezing issues) •Data deletion: connecting the WIWE device to a microUSB cable then pushing the button swiftly 5 times deletes the stored data of the WIWE device (usefulness: owner account, stepcounter issues mainly) WIWE Device Process LED functions •The lights runing through •The last green LED flashing •The last green LED glowing constantly
  3. 3. Summary: •Connects to the WIWE device through Bluetooth LE/4.0 •Evaluates the recorded data transferred by the WIWE device •Creates a result summary and details in the form of graphs •Stores all the recordings •Pedometer function to summarize activity Important „developer” functions: •#*Test_User*# account makes the „developer” functions’ settings visible in the „Settings” menu •NoSPO – turns OFF the SpO2 recording function (minimizing the noise levels further for the ECG recording) •ECG and SpO2 raw data to CSV file – stores the data of the recording into a separate file outside the app database (possibility of further detailed evaluation in specific cases) •Logging into files – storing the events throughout the running of the application (connection, measuring, possible crashes, syncrhonization, etc.) WIWE Application
  4. 4. Measurement techniques To get the most accurate results from your recordings with the WIWE you need to have a basic technique for the measurements. We determined two basic ways to efficiently take a recording: 1. Put your thumbs on the 2 sensors/electrodes of the WIWE and support your palms on your lap on a table (any flat surface is fine) 2. Put your index fingers on the 2 sensors/electrodes of the WIWE and your forearms should rest on the table In both cases you need to follow a couple single „rules”: 1. Your fingers should only touch the sensors, only the contact of the two surface is enough for the recording 2. Be relaxed – not necessarily yourself, mainly your fingers/hands 3. Your other fingers shouldn’t touch each other throughout the recording
  5. 5. ECG: •Shows if there is any deviation in the measured ECG parameters (Lead I – PQ, QRS, QTc) •The measured parameteres ofthis function are quite stable for the patient (there should only be small differences in the results mainly because of the recordings made with different circumstances [body pose, state of relaxation, technique of the measurements, etc.], otherwise they should be stable •If something triggers a symptom in one of the parameters then its indication (eg. broad QRS complex) should be there independently from the circumstances of the recording AR/AF: •Shows if there was any heart rate fluctuation throughout the measurement or if there is a possible Atrial Fibrillation present •This function shows the state of the heart rythm according to the one minute recording and since these kind of symptoms not always last long, the „bad” results of the recording not necessarily need to be there in every recording („catching” the event is most essential basically) VH - Ventricular repolarizational heterogeneity •Describes the state of bioelectrical connections between heart muscle cells. Sharp deterioration may lead to severe ventricular arrhythmias, also Sudden Cardiac Arrest. •This is a mainly risk assessing function, so the results shouldn’t differ too much between each recording in normal cases SpO2 – Blood oxygen saturation Heart rate Result screen
  6. 6. ECG PQ (PR interval) It reflects the conduction through the AV node •Normal interval – 120-200 ms •Over 200 ms – first degree heart block (electrolyte imbalance, delayed conduction through the AV node, doubles the risk of developing AF) •Under 120 ms – suggests pre-excitation (pathway between atria and ventricle, faster than normal conducting through this) or AV nodal (junctional) rythm QRS complex – depolarisation of the ventricles •Normal interval – 60-100 ms •Broad complexes - QRS > 100 ms – ventricular origin or aberrant conduction (bundle branch block, hyperkalaemia) •Narrow complexes – QRS < 100 ms – supraventricular origin QT interval (corrected to 60 bpm for comparison) Time taken for the ventricular depolarisation and depolarisation •Normal interval – 350-430 ms •QTc>430 ms – hypokalaemia, hypomagnesaemia, hypocalcaemia, hypothermia, etc. •QTc<350 ms – eg. hypercalcaemia Details of the ECG I parameters measured by WIWE
  7. 7. Heartbeat - ECG
  8. 8. ECG I parameters Examined ECG I parameters by the WIWE as seen in the application The average majority cycle is what we use to measure the parameters (it means that the result will be more accurate and when calculating the average cycle we also use filters) The whole ECG curve is also stored and can be checked – important for doctors it’s easy to check (it can be enlarged and it has the same scaling as the one they normally use)
  9. 9. Arrhythmia examination We have analyzed the accuracy of our algorithm with the help of more than 10.000, 30 seconds long ECG recordings taken from PhysioNET. The sensitivity of WIWE is 98,69%, which is the chance of determining the real abnormal patterns. Specificity is 99,59%, which means that we can determine the healthy patterns with such precision. Our algorithm determines if there is AF based on two things: •Was there a significant heart rate fluctuation throughout the recording? •Was there no significant P wave throughout the recording? Both event need to be present for a possible AF.
  10. 10. AF – Stroke connection Stroke is the second leading cause of deaths worldwide, causing more than five million deaths a year. WIWE gives you risk assessment especially on stroke caused by atrial fibrillation, which is the largest proportion of ischaemic strokes. Ischaemic stroke: •Oxygen deficiency in the brain tissue •Main reason of ischaemic strokes is the blockage of blood supplying arteries, which may be caused by blood clots drifting in the vessels •Atrial fibrillation is the most common cause of strokes originated from the heart •15% of strokes are due to atrial fibrillation
  11. 11. Ventricular repolarizational heterogeneity Assessing the ventricular heterogenity provides a feedback about the coordinated operation of the heart muscle cells, meaning we can esteem the state of the cardiac muscle. This function is – as stated before – a risk assessment. The result itself shows how big is the chance for a possible – and dangerous – ventricular arrhythmia. If the evaluation of the recording gives back a „red” result then there is a much higher chance for a VT/VF to develop or even for an SCA/SCD. This function of the WIWE is worldwide unique – no other competing product is capable to do this!
  12. 12. Sudden Cardiac Arrest Sudden cardiac arrest: •Heart abnormalities resulting in death. No more than an hour goes by between the start of symptoms and loss of life. •It is due to ventricular arrhythmia, ventricular fibrillation. •The blood pump function of heart ceases, circulation stops. •Resuscitation should start within minutes, or else the patient’s life can not be saved. Sudden cardiac arrest can happen with anyone, anytime and anywhere, it kills 7 million people a year. It should be pointed out, that sudden cardiac arrest and heart attacks are two different events.
  13. 13. The comparative table below shows the competing products that are currently on the market. We should highlight Kardia (AliveCor), which is currently the best-known ECG recording device on the market. In addition we investigated CheckMePro (Viata Shenzhen Technology Co., Ltd.), WeCardio ECG (Borsam Medical Instruments Co., Ltd.) and CardioQvark (L Kard LLC). Product Price Evaluation Accuracy Additional costs Non-ECG based features Availability Kardia 99 $ ECG, AF, arrhythmia 97% Yes Yes Australia, Canada, Ireland, India, Hong Kong, USA, UK CheckMePro 449 $ ECG, arrhythmia, SpO2, HRV ? No Yes Worldwide WeCardio ECG 149$ ECG, arrhythmia, HRV ? No No North America, Western and Eastern Europe, Southeast Asia, East Asia, Middle East, Oceania, Africa CardioQvark 135 $ ECG, AF, arrhythmia, HRV 94,5% Yes No Russia, expanding in 2017 WIWE 418$ ECG, AF, ventricular heterogeneity, arrhythmia, SpO2 98% No Yes Europe, expected to be available worldwide from autumn 2017 Competition
  14. 14. Competition II. Kardia WIWE WeCardio CheckMePro CardioQvark
  15. 15. If we know it, we can change it Visit our website: Follow us on Facebook: WIWEHungary