Aaron Fried
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Quiz on ECG Prep Quiz, created by Aaron Fried on 15/03/2020.

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ECG Prep Quiz

Question 1 of 16

1

Which answer best defines a biopotential?

Select one of the following:

  • An electrical gradient in living cells.

  • Kinetic energy in an organism.

  • All of the things a human can do on their lifetime.

  • The ions in a cell.

Explanation

Question 2 of 16

1

Excitable tissue is defined by its ability to

Select one of the following:

  • Respond to changes in the environment.

  • Generate electricity.

  • Create an action potential

  • All of these are true.

Explanation

Question 3 of 16

1

Which series of events in the cardiac cycle occurs first?

Select one of the following:

  • Electrical

  • Mechanical

Explanation

Question 4 of 16

1

What is the benefit of a 12-lead ECG? In other words, why isn’t one lead sufficient?

Select one of the following:

  • Multiple leads provide a 3 dimensional image of the electrical activity of the heart.

  • Each additional lead duplicates and verifies the others.

  • There is no benefit.

Explanation

Question 5 of 16

1

Select from the dropdown lists to complete the text.

When reading an ECG the vertical axis is calibrated in ( millivolts, seconds ) while the horizontal axis is calibrated in ( millivolts, seconds ).

Explanation

Question 6 of 16

1

What wave on an ECG indicates depolarization of the atria?

Select one of the following:

  • P wave

  • QRS Complex

  • T wave

  • PQ interval

  • QT interval

Explanation

Question 7 of 16

1

What portion of an ECG indicates the time it takes for an electrical impulse to reach the ventricles?

Select one of the following:

  • P wave

  • QRS Complex

  • T wave

  • PR interval

  • QT interval

Explanation

Question 8 of 16

1

Which of the following is not represented by a specific wave on a typical electrocardiogram?

Select one of the following:

  • depolarization of the atria

  • repolarization of the atria

  • depolarization of the ventricles

  • repolarization of the ventricles

Explanation

Question 9 of 16

1

Which happens first?

Select one of the following:

  • depolarization of the atria

  • depolarization of the ventricles

Explanation

Question 10 of 16

1

A positive T-wave is generally an indication of a cardiac abnormality.

Select one of the following:

  • True

  • False

Explanation

Question 11 of 16

1

When referring to cardiac rhythm, what does the term irregular refer to?

Select one of the following:

  • No R-R interval differs from any other R-R interval by more than 0.12 second.

  • No R-R interval differs from any other R-R interval by more than 0.06 second.

  • Less than 75 beats in one minute.

  • More than 75 beats in one minute.

Explanation

Question 12 of 16

1

Select from the dropdown list to complete the text.

Given the following information, determine the heart rate as precisely as the rules allow.
Heart rhythm is irregular

There are 6 R-waves in 6-inch tracing
There are 6.7 R-R intervals in 6-inch tracing

Heart rate is: ( 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70 ) bpm

Explanation

Question 13 of 16

1

If the R-R interval on an ECG tracing increases, heart rate must be:

Select one of the following:

  • increasing.

  • decreasing.

Explanation

Question 14 of 16

1

During a cardiac cycle, which valves close first?

Select one of the following:

  • Atrioventricular (AV) valves

  • Semilunar (SL) valves

Explanation

Question 15 of 16

1

The semilunar valves close when ventricular pressure:

Select one of the following:

  • rises

  • falls

Explanation

Question 16 of 16

1

If the amplitude of a pulse wave increases this would be a rough in indication that stroke volume is:

Select one of the following:

  • increasing

  • decreasing

Explanation

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