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Free Practice Quiz Question List

3 Ventricular Rhythms and Conduction Disorders Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Ventricular Rhythms and Conduction Disorders, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

An adult has a regular wide-complex tachycardia, and its cause is not yet known. Which initial rhythm assumption is recommended?

  1. A

    Assume it is a paced rhythm

  2. B

    Treat it as ventricular tachycardia until proven otherwise

  3. C

    Classify it as supraventricular tachycardia with aberrancy

  4. D

    Use verapamil to determine its origin

02
Choose one
1 point

Which QRS pattern is typical of right bundle-branch block?

  1. A

    A terminal positive deflection in V1 and a broad terminal S wave in leads I and V6

  2. B

    A broad, often notched R wave in lateral leads and a predominantly negative QRS in V1

  3. C

    A narrow QRS with a prolonged PR interval

  4. D

    A pacing spike without a following ventricular response

03
True or false
1 point

True or false: In pulseless electrical activity, the presence of an organized rhythm is by itself a reason to defibrillate.

  1. A

    True

  2. B

    False

04
True or false
1 point

True or false: A 2:1 AV block pattern alone usually does not allow a reliable distinction between Mobitz I and Mobitz II.

  1. A

    True

  2. B

    False

05
Written response
1 point

At what QRS duration, in seconds, is a QRS classified as wide?

06
Written response
1 point

An ECG shows conducted beats with a stable PR interval, but some P waves are not followed by QRS complexes. What second-degree AV-block subtype does this pattern indicate?

07
Fill in the blank
1 point

When a pacing spike is followed by the expected chamber response, this indicates .

08
Fill in the blank
1 point

In third-degree AV block, P waves and QRS complexes occur independently, with between them.

09
Choose all
1 point

Select all findings that indicate instability and can change the urgency of rhythm management.

  1. A

    Hypotension

  2. B

    A stable blood pressure with no symptoms

  3. C

    Shock

  4. D

    Altered mental status

  5. E

    A regular rhythm by itself

  6. F

    Ischemic chest discomfort

  7. G

    Acute heart failure

10
Choose all
1 point

Select all statements that correctly describe torsades de pointes or its management.

  1. A

    The QRS shape or axis varies rapidly

  2. B

    The complexes can appear to twist around the baseline

  3. C

    A consistent narrow QRS is its defining feature

  4. D

    It is associated with prolonged QT

  5. E

    Sustained polymorphic VT can reliably be synchronized for cardioversion

11
Choose one
1 point

A patient’s tracing appears to show asystole. Which action is appropriate for this rhythm?

  1. A

    Perform synchronized cardioversion

  2. B

    Perform unsynchronized defibrillation

  3. C

    Confirm the tracing and leads, provide CPR, and follow the nonshockable-arrest algorithm

  4. D

    Give a calcium-channel blocker

12
Open ended
1 point

A patient has symptomatic bradycardia with cardiopulmonary compromise. Outline the initial supportive approach and the recommended treatment escalation if atropine is ineffective.

13
Choose one
1 point

An adult has an undifferentiated wide-complex tachycardia. Which action is consistent with the recommended approach?

  1. A

    Give verapamil to clarify whether the rhythm is ventricular

  2. B

    Avoid verapamil or diltiazem and seek expert help

  3. C

    Assume that a pulse proves the rhythm is supraventricular

  4. D

    Delay assessment until a 12-lead ECG is obtained

14
Choose one
1 point

Which ECG pattern is most typical of right bundle-branch block?

  1. A

    A broad, often notched R wave in lateral leads and a predominantly negative QRS in V1

  2. B

    A terminal positive deflection in V1 and a broad terminal S wave in leads I and V6

  3. C

    A narrow QRS with a progressively lengthening PR interval

  4. D

    A wide QRS without a consistent preceding P wave and a slow, regular rhythm

15
True or false
1 point

In first-degree AV block, every P wave conducts to a QRS complex, although the PR interval is longer than 0.20 s.

  1. A

    True

  2. B

    False

16
Written response
1 point

A pacemaker spike appears, but it is not followed by the expected P wave or QRS complex. What device problem does this indicate?

17
Written response
1 point

A patient has organized electrical activity on the monitor but no palpable pulse. What rhythm is this?

18
Choose one
1 point

A patient with a newly noted rhythm disturbance is hypotensive and confused. What should be prioritized first?

  1. A

    Obtain a 12-lead ECG before assessing the patient

  2. B

    Determine the rhythm label before checking perfusion

  3. C

    Assess responsiveness, pulse, blood pressure, perfusion, breathing, and symptoms

  4. D

    Measure the QT interval before evaluating the patient's stability

19
Choose one
1 point

An adult has an unexplained wide-complex tachycardia. Which interpretation is the safest starting point while arranging expert help?

  1. A

    Assume it is supraventricular tachycardia and give verapamil

  2. B

    Treat it as VT until proven otherwise and seek expert help

  3. C

    Assume it is a paced rhythm and take no further action

  4. D

    Classify it as Mobitz II AV block

20
Choose one
1 point

An ECG shows 2:1 AV conduction: every other P wave is not followed by a QRS. What can be concluded from this pattern alone?

  1. A

    It establishes Mobitz I because one P wave is blocked in each pair

  2. B

    It establishes Mobitz II if the QRS complexes are narrow

  3. C

    The pattern alone usually cannot distinguish Mobitz I from Mobitz II

  4. D

    It establishes complete AV block because atrial and ventricular activity are unrelated