What was the mechanical system utilized to register the signal of the Einthoven and Lewis machines?
At the end of the 19th century medical instruments were not able to de Show more PLEASE SHOW ANY AND ALL WORK At the end of the 19th century medical instruments were not able to detect the cardiac signal unless the electrodes were directly placed into the heart. 1. What is the rage of amplitude of normal EKGpotentials? 2. By what factor is it necessary to amplify the normal EKG signal so that it is easy to record? 3. What sampling frequency is necessary for acquisition? 4. Problem A. How long does it take for EKG electrical events in the atrium and in the ventricles to occur? B. What is the duration for each of these EKGwaves? B. State the meaning of each of the wave in the electrocardiogram? 5. How does Willen Einthovens string galvanometer solve the problem of precision and sensitivity? 6. How did Einthoven and Lewis design their electrodes for the machine? 7. What was the mechanical system utilized to register the signal of the Einthoven and Lewis machines? 8. Name the following EKG abnormalities: 9. Assign to each axis the corresponding dipolar or monopolar lead (all 6 leads): 10. Problem: A. Calculate the voltage for Leads I II and III given the following voltages for each electrode in the Einthoven Triangle: -0.3 mV +0.7 mV +1 mV B. How you can check that your calculation is correct using the Einthovens Law: Show less
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