ECG Machine Quiz
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Define electrocardiogram - | Printed record of the electrical activity of the heart
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| Define electrocardigraph - | Machine that makes the recording
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| What supplies the electrical power to the machine? | Power cable
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| What voltage does the ECG machine operate at? | 110 - 120 Volts
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| What size cycle outlet does the ECG machine operate at? | 60 cycle outlet
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| What is suspended in a magnetic field and fluctuates when current passes through the feild? | Galvanometer String
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| What is the name of the writing arm of the machine? | Stylus
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| What two principles does the stylus work on? | 1. Under heat - 2. Pressure
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| What carries currect from the patient to the machine? | Patient cable
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| Where is the pt cable grounded? | On both ends
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| What are the extensions called that pick up current from the pt and carry it to the pt cable? | Lead wires
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| What is the minimum # used? | 4 limb & 1 chest
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| What are the normal number of lead wires? | 4 limb & 6 chest
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| What is used to select the lead required? | Lead selector
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| What are the major positions for the lead selector? | I, II, III, AVR, AVF, AVL, V1 - V6
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| What controls how fast the paper is moving past the stylus? | Paper speed
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| What are the most common paper speeds used? | 25 mm & 50 mm
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| The ECG machine is standardized according to what? | Time & Voltage
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| What size deflection would 1 mv of currect cause? | 10 mm
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