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Free Practice Quiz Question List

6 Dysrhythmias Online Quiz Questions

Use this free practice quiz with 20 questions to review 6 Dysrhythmias, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

True or false: A rhythm on the monitor, by itself, proves the patient’s clinical condition.

  1. A

    True

  2. B

    False

02
Fill in the blank
1 point

To estimate the ventricular rate of an irregular rhythm, count QRS complexes in 6 seconds and multiply the count by .

03
Choose one
1 point

A patient with a dysrhythmia is breathing comfortably and is not hypoxemic. Which approach to oxygen is most appropriate?

  1. A

    Give oxygen routinely to every patient with a dysrhythmia.

  2. B

    Give oxygen if the patient is hypoxemic.

  3. C

    Withhold oxygen even if the patient is hypoxemic.

  4. D

    Delay assessing oxygenation until a 12-lead ECG is obtained.

04
Written response
1 point

At what QRS duration, in seconds, is a QRS considered wide?

05
Choose all
1 point

Select all appropriate initial nursing actions when a patient develops a dysrhythmia.

  1. A

    Assess responsiveness, breathing, and pulse.

  2. B

    Apply continuous cardiac monitoring and obtain blood pressure and oxygen saturation.

  3. C

    Give oxygen routinely, even when the patient is not hypoxemic.

  4. D

    Obtain a 12-lead ECG when feasible without delaying urgent care.

  5. E

    Delay urgent escalation until a prolonged rhythm analysis is complete.

06
Choose one
1 point

A patient has a regular rhythm at 42/min, with a consistent P wave before each narrow QRS. The patient is awake, denies symptoms, and has stable blood pressure. What is the best interpretation and response?

  1. A

    Sinus bradycardia; assess the patient and continue monitoring.

  2. B

    Ventricular fibrillation; defibrillate.

  3. C

    Third-degree AV block; begin CPR.

  4. D

    SVT; prepare adenosine.

07
Written response
1 point

An ECG shows intermittent dropped QRS complexes without progressive PR lengthening. Which second-degree AV block pattern does this describe?

08
Fill in the blank
1 point

Atrial flutter is characterized by repeating .

09
True or false
1 point

True or false: For a stable patient with a regular SVT, vagal maneuvers and, when indicated, adenosine may be used under protocol or prescription.

  1. A

    True

  2. B

    False

10
Choose all
1 point

When evaluating possible reversible contributors to a dysrhythmia, which factors should be considered? Select all that apply.

  1. A

    Ischemia

  2. B

    Hypoxia

  3. C

    A patient’s stable blood pressure by itself

  4. D

    Medication effects

  5. E

    Electrolyte abnormalities

11
Choose one
1 point

A patient has a rapid, regular, narrow-complex rhythm and is confused and hypotensive. What is the priority response?

  1. A

    Wait 30 minutes and repeat the ECG.

  2. B

    Activate emergency assistance and prepare for synchronized cardioversion by trained clinicians.

  3. C

    Encourage the patient to walk to reduce the heart rate.

  4. D

    Complete a prolonged ECG before notifying anyone.

12
Open ended
1 point

A regular rhythm on standard ECG paper has 5 large boxes between R waves. Explain how to estimate its ventricular rate and why the estimate alone is not enough to determine the urgency of the patient’s condition.

13
Choose one
1 point

A patient on telemetry develops frequent PVCs and reports new chest pressure. What is the best nursing response?

  1. A

    Assess the patient and vital signs, promptly notify the responsible clinician, and prepare for further evaluation.

  2. B

    Document the PVCs and wait until the end of the shift.

  3. C

    Tell the patient to ignore the chest pressure.

  4. D

    Remove the monitor because PVCs are always harmless.

14
Written response
1 point

What is the upper end of the normal PR interval, in seconds?

15
True or false
1 point

Oxygen should be given routinely to every patient with a dysrhythmia, even when the patient is not hypoxemic.

  1. A

    True

  2. B

    False

16
Choose one
1 point

A patient with atrial fibrillation asks whether they need anticoagulation. Which response best reflects the appropriate approach?

  1. A

    Anticoagulation is required for every patient with atrial fibrillation.

  2. B

    Stroke risk should be assessed individually when considering anticoagulation.

  3. C

    Anticoagulation is never considered if the patient has no palpitations.

  4. D

    Atrial fibrillation always requires immediate defibrillation.

17
Choose one
1 point

An ECG shows progressive PR interval lengthening until a QRS complex is dropped, after which the pattern repeats. Which rhythm finding is most likely?

  1. A

    First-degree AV block: a prolonged PR interval with no dropped QRS.

  2. B

    Mobitz I second-degree AV block: the PR interval progressively lengthens, then a QRS is dropped.

  3. C

    Mobitz II second-degree AV block: a QRS is intermittently dropped without progressive PR lengthening.

  4. D

    Third-degree AV block: P waves and QRS complexes have no consistent relationship.

18
Choose one
1 point

Which ECG description is characteristic of ventricular fibrillation?

  1. A

    A regular rhythm with a normal P wave before each QRS.

  2. B

    Repeating sawtooth flutter waves, with a regular or variable ventricular rhythm.

  3. C

    Disorganized electrical activity with no identifiable organized QRS complexes.

  4. D

    An early wide QRS without a preceding normal P wave, often followed by a pause.

19
Choose one
1 point

Which ECG description is most consistent with a premature ventricular complex (PVC)?

  1. A

    A normal P wave before every narrow QRS, with a consistently prolonged PR interval.

  2. B

    An early, wide QRS without a preceding normal P wave, often followed by a pause.

  3. C

    A repeating sawtooth pattern with no early ventricular complexes.

  4. D

    Disorganized electrical activity with no identifiable organized QRS complexes.

20
Written response
1 point

An ECG shows a PR interval that is consistently 0.24 seconds, with every P wave followed by a QRS complex. What type of AV block does this indicate?