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| 1 | You have attached the ECG machine to a 25-year-old patient who is complaining of "heart palpitations." After the heart rate, the second step of assessing an ECG is to determine the: |
 | A) | regularity |
| B) | morphology of the P waves |
| C) | origin of the QRS complexes |
| D) | heart rate |
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| 2 | To assess atrial regularity we analyze the: |
| A) | R-R intervals |
| B) | P-P intervals |
| C) | PR intervals |
| D) | QT intervals |
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| 3 | The distance between consecutive P waves should: |
| A) | get progressively longer |
| B) | vary with respirations |
| C) | be the same |
| D) | vary from beat to beat |
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| 4 | To assess ventricular regularity we analyze the: |
| A) | R-R intervals |
| B) | P-P intervals |
| C) | PR intervals |
| D) | QT intervals |
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| 5 | The most accurate method used to determine the regularity of a rhythm and requires you to use a specific device is: |
| A) | the 300, 150, 100, 75, 60, 50 method |
| B) | marking a paper with a pen |
| C) | counting the number of small squares between each R-R interval |
| D) | using calipers |
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| 6 | Which of the following methods used to determine the regularity of a rhythm is the easiest to do and usually readily available? |
| A) | 300, 150, 100, 75, 60, 50 method |
| B) | marking a paper with a pen |
| C) | counting the number of small squares between each R-R interval |
| D) | using calipers |
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| 7 | You are analyzing an ECG tracing and observe that the P-P intervals and R-R intervals are all the same distance. This indicates the presence of a/an: |
| A) | slightly irregular rhythm |
| B) | occasionally irregular rhythm |
| C) | regular rhythm |
| D) | patterned irregular rhythm |
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| 8 | You are analyzing the regularity of an ECG tracing. You note that the rhythm seems to speed up and slow down in a cyclical fashion. This is referred to as ___________ irregularity. |
| A) | slightly |
| B) | occasionally |
| C) | paroxysmal |
| D) | patterned |
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| 9 | Your patient is a 53-year-old male who is experiencing dizziness. You are analyzing the regularity of his ECG tracing and note that the heart rate suddenly speeds up. This is referred to as ___________ irregularity. |
| A) | slightly |
| B) | occasionally |
| C) | paroxysmal |
| D) | frequently |
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| 10 | The ECG you are analyzing is a sinus rhythm which has a few premature beats. This is referred to as ___________ irregularity. |
| A) | slightly |
| B) | occasionally |
| C) | paroxysmal |
| D) | frequently |
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| 11 | An ECG tracing where there is no consistency to the irregularity is referred to as ___________ irregularity. |
| A) | totally |
| B) | occasionally |
| C) | paroxysmal |
| D) | frequently |
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| 12 | An impulse that appears early in the cardiac cycle: |
| A) | causes the rhythm to be irregular |
| B) | is called a premature complex or ectopy |
| C) | can arise from any of the cells of the heart including the atria, AV junction, or ventricles |
| D) | all of the above |
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| 13 | Sinus arrest produces a/an ______ irregular rhythm. |
| A) | totally |
| B) | occasionally |
| C) | paroxysmal |
| D) | slightly |
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| 14 | Wandering atrial pacemaker produces a/an ______ irregular rhythm. |
| A) | totally |
| B) | occasionally |
| C) | paroxysmal |
| D) | slightly |
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| 15 | Paroxysmal irregularity can be caused by all of the following types of tachycardia EXCEPT: |
| A) | atrial |
| B) | sinus |
| C) | ventricular |
| D) | junctional |
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| 16 | Premature beats occurring every other beat produces a/an ______ irregular rhythm. |
| A) | patterned |
| B) | occasionally |
| C) | totally |
| D) | slightly |
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| 17 | Atrial fibrillation produces a/an ______ irregular rhythm. |
| A) | occasionally |
| B) | frequently |
| C) | totally |
| D) | slightly |
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| 18 | Irregularity due to varying conduction ratios may occur with which of the following? |
| A) | atrial tachycardia |
| B) | 3rd-degree AV heart block |
| C) | atrial flutter |
| D) | atrial fibrillation |
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| 19 | 2nd degree AV heart block, Type I produces a/an ______ irregular rhythm. |
| A) | occasionally |
| B) | frequently |
| C) | totally |
| D) | patterned |
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| 20 | Sinus bradycardia produces a/an ______ rhythm. |
| A) | occasionally irregular |
| B) | frequently irregular |
| C) | slightly irregular |
| D) | regular |
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| 21 | Normally the heart beats in a slightly irregular fashion, producing a P wave, QRS complex, and T wave with each heartbeat. |
| A) | True |
| B) | False |
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| 22 | An occasionally irregular rhythm is considered normal. |
| A) | True |
| B) | False |
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| 23 | A very irregular rhythm suggests that the heart is extremely irritable. |
| A) | True |
| B) | False |
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| 24 | A patterned irregular rhythm is one in which there is no consistency to the irregularity. |
| A) | True |
| B) | False |
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| 25 | Irregularity that is seen when the number of impulses reaching the ventricles changes is called irregularity due to varying conduction ratios. |
| A) | True |
| B) | False |