Question: Electrical Activity of the Heart 1, what is the instrument used to measure electrical activity ge…


Electrical Activity of the Heart 1, what is the instrument used to measure electrical activity generated by the heart?- 2. The graphic recording of the electrical changes occurring during the cardiac cycle is known as 3. What is the purpose of this test? 4. What happens during the P wave? 5. What happens during QRS wave? 6. What happens during theT wave? 7. Define tachycardia 8. Define bradycardia 9. Define fibrillation Interpreting ECG An ECG is printed on paper covered with a grid of squares. Notice that five small squares on the paper form a larger square. The width of a single small square on ECG paper represents 0.04 seconds. To successfully interpret ECGs, you must remember this value. If each small square represents 0.04 seconds, then a second will be 25 small squares across. If you print out a minutes worth of your hearts electrical activity, the paper would be 1500 small squares wide. If something on an ECG is, lets say, 12 small squares in width, that means that it lasted 12 x 0.04, or almost half a second. A common length of an ECG printout is 6 seconds; this is known as a six second strip.

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Electrical Activity of the Heart 1, what is the instrument used to measure electrical activity generated by the heart?- 2. The graphic recording of the electrical changes occurring during the cardiac cycle is known as 3. What is the purpose of this test? 4. What happens during the P wave? 5. What happens during QRS wave? 6. What happens during theT wave? 7. Define tachycardia 8. Define bradycardia 9. Define fibrillation Interpreting ECG An ECG is printed on paper covered with a grid of squares. Notice that five small squares on the paper form a larger square. The width of a single small square on ECG paper represents 0.04 seconds. To successfully interpret ECGs, you must remember this value. If each small square represents 0.04 seconds, then a second will be 25 small squares across. If you print out a minute's worth of your heart's electrical activity, the paper would be 1500 small squares wide. If something on an ECG is, let's say, 12 small squares in width, that means that it lasted 12 x 0.04, or almost half a second. A common length of an ECG printout is 6 seconds; this is known as a "six second strip."

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