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| 1 | All of the following types of AV heart block are true blocks EXCEPT: |
 | A) | 1st- degree AV heart block |
| B) | Type I, 2nd- degree AV heart block |
| C) | Type II, 2nd- degree AV heart block |
| D) | 3rd-degree AV heart block |
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| 2 | First degree AV heart block is a/an: |
| A) | complete block of the conduction at or below the AV node |
| B) | intermittent block at the level of the bundle of His or bundle branches |
| C) | intermittent block of the conduction at the AV node |
| D) | consistent delay in conduction at the level of the AV node |
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| 3 | Which of the following dysrhythmias has patterned irregularity? |
| A) | 1st- degree AV heart block |
| B) | Type I, 2nd- degree AV heart block |
| C) | Type II, 2nd- degree AV heart block |
| D) | 3rd-degree AV heart block |
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| 4 | The normal PR interval is ____ seconds in duration. |
| A) | 0.08 to 0.16 |
| B) | 0.10 to 0.18 |
| C) | 0.12 to 0.20 |
| D) | 0.16 to 0.24 |
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| 5 | With 1st- degree AV block the PR interval is: |
| A) | variable |
| B) | greater than 0.20 seconds in duration |
| C) | absent |
| D) | less than 0.12 seconds in duration |
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| 6 | With 1st- degree AV block the P waves are: |
| A) | normal; one precedes each QRS complex |
| B) | normal but not all are followed by a QRS complex |
| C) | present but do not have a relationship with the QRS complexes |
| D) | absent |
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| 7 | Type I, 2nd- degree AV heart block typically has a ______ atrial rate. |
| A) | slow |
| B) | fast |
| C) | normal |
| D) | all of the above |
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| 8 | Type I, 2nd- degree AV heart block is a/an: |
| A) | complete block of the conduction at or below the AV node |
| B) | intermittent block of the conduction at the AV node |
| C) | intermittent block at the level of the bundle of His or bundle branches |
| D) | consistent delay in conduction at the level of the AV node |
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| 9 | With Type I, 2nd- degree AV heart block the PR intervals are: |
| A) | less than 0.12 seconds in duration |
| B) | greater than 0.20 seconds in duration |
| C) | absent |
| D) | progressively longer until a QRS complex is dropped, then the cycle begins again |
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| 10 | With Type I, 2nd- degree AV heart block the P waves are: |
| A) | normal; one precedes each QRS complex |
| B) | normal but not all are followed by a QRS complex |
| C) | present but do not have a relationship with the QRS complexes |
| D) | absent |
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| 11 | Type II, 2nd- degree AV heart block is a/an: |
| A) | complete block of the conduction at or below the AV node |
| B) | intermittent block of the conduction at the AV node |
| C) | intermittent block at the level of the bundle of His or bundle branches |
| D) | consistent delay in conduction at the level of the AV node |
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| 12 | With Type II, 2nd- degree AV heart block the PR intervals are: |
| A) | progressively longer until a QRS complex is dropped, then the cycle begins again |
| B) | greater than 0.20 seconds in duration |
| C) | absent |
| D) | are constant for the conducted beats |
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| 13 | With Type II, 2nd- degree AV heart block the P waves are: |
| A) | normal; one precedes each QRS complex |
| B) | normal but not all are followed by a QRS complex |
| C) | present but do not have a relationship with the QRS complexes |
| D) | absent |
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| 14 | 3rd- degree AV heart block is a/an: |
| A) | complete block of the conduction at or below the AV node |
| B) | intermittent block of the conduction at the AV node |
| C) | intermittent block at the level of the bundle of His or bundle branches |
| D) | consistent delay in conduction at the level of the AV node |
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| 15 | With 3rd- degree AV heart block the PR intervals are: |
| A) | progressively longer until a QRS complex is dropped, then the cycle begins again |
| B) | greater than 0.20 seconds in duration |
| C) | absent |
| D) | are constant for the conducted beats |
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| 16 | With 3rd- degree AV heart block the P waves are: |
| A) | normal; one precedes each QRS complex |
| B) | normal but not all are followed by a QRS complex |
| C) | present but do not have a relationship with the QRS complexes |
| D) | absent |
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| 17 | You are assessing the ECG of a person who is undergoing a physical exam. You see a regular rhythm with heart rate of 58 beats per minute and each upright P wave is followed by a narrow QRS complex. The PR intervals are 0.24 seconds in duration. This dysrhythmia is: |
| A) | sinus bradycardia with 1st- degree AV heart block |
| B) | Type I, 2nd- degree AV heart block |
| C) | Type II, 2nd- degree AV heart block |
| D) | 3rd-degree AV heart block |
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| 18 | You are assessing the ECG of a patient who is complaining of chest pain. You see a regularly irregular rhythm with a ventricular rate of 54 beats per minute. There are more upright, round P waves than there are narrow QRS complexes. The duration of the PR intervals seems to progressively increase until a QRS complex is dropped, and then the cycle starts all over again. This dysrhythmia is: |
| A) | 1st- degree AV heart block |
| B) | Type I, 2nd- degree AV heart block |
| C) | Type II, 2nd- degree AV heart block |
| D) | 3rd-degree AV heart block |
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| 19 | Your 82 year-old patient experienced a syncope episode. You attach her to an ECG to see a regular rhythm with a ventricular rate of 43 beats per minute. There are upright P waves that seem to be marching through wider than normal QRS complexes. The PR intervals are absent. This dysrhythmia is: |
| A) | 1st- degree AV heart block |
| B) | Type I, 2nd- degree AV heart block |
| C) | Type II, 2nd- degree AV heart block |
| D) | 3rd-degree AV heart block |
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| 20 | 1st-degree AV heart block is usually clinically significant. |
| A) | True |
| B) | False |
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| 21 | 1st-degree AV heart block is seen in sinus bradycardia and normal sinus rhythm but not sinus tachycardia. |
| A) | True |
| B) | False |
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| 22 | In 2nd-degree AV heart block, Type II the P waves are upright and uniform but there are more P waves than QRS complexes as some of the QRS complexes are blocked. |
| A) | True |
| B) | False |
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| 23 | 2nd-degree AV heart block, Type I is a serious dysrhythmia and is almost always considered malignant in the emergency setting. |
| A) | True |
| B) | False |
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| 24 | The feature that stands out in 2nd-degree AV heart block, Type II, is the presence of more P waves than QRS complexes. |
| A) | True |
| B) | False |
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| 25 | In 3rd– degree AV heart block the ventricular rate depends on the escape focus—40 to 60 beats per minute if it is junctional and 20 to 40 beats per minute if it is ventricular. |
| A) | True |
| B) | False |