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Chapter: 18 / Q: 30
What are the letters ECG short for? Electro-
Chapter: 18 / Q: 31
The potential differences generated by the heart muscle as it contracts and relaxes can be measured by placing electrodes on the surface of the body. What is the record of these electrical events correctly called?
Chapter: 18 / Q: 32
What are the defl ections seen on an electrocardiogram trace due to?
Chapter: 18 / Q: 33
The electrocardiogram chart is a graph. What is plotted against the vertical axis?
Chapter: 18 / Q: 34
Consider a cardiac monitor whose time-base control is set so that the ECG trace moves horizontally at 25 mm/sec. If the patient’s heart rate is 75 beats per minute, how far apart would the peaks of the ECG trace be?
Chapter: 18 / Q: 35
The ECG trace on the screen of a cardiac monitor is measured to be 3 cm high. If the sensitivity control was set at 2 cm/mV, what is the value of the voltage being measured?
Chapter: 18 / Q: 36
Why does a correctly installed Earth wire provides protection against electrocution by a faulty electrical device? Because:
Chapter: 19 / Q: 1
Choose the INCORRECT statement from the four below
Chapter: 19 / Q: 2
Which of the following is correct?
Chapter: 19 / Q: 3
If a traction hanging mass is 3 kg, use Newton’s second law (or otherwise) to determine the gravitational force acting on the mass
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