1) In a junctional escape rhythm, what is the role of the AV junction? a) It delays the atrial contraction b) It only conducts impulses, never generates them c) It blocks all electrical impulses d) It takes over pacing when the SA node fails 2) Which of the following clinical situations might result in a junctional rhythm? a) Hyperthyroidism b) Anxiety c) Digitalis toxicity d) Fever 3) What is the primary pacemaker site in a junctional rhythm? a) Atrioventricular (AV) node or junction b) Purkinje fibers c) Sinoatrial (SA) node d) Bundle of His 4) In a junctional rhythm, the P wave is typically a) Peaked and tall b) Absent or inverted c) Always upright before the QRS d) Wide and irregular 5) Which of the following heart rhythms is an example of a junctional rhythm? a) A b) B c) C d) D 6) A patient is experiencing a junctional escape rhythm. What nursing interventions are appropriate? (Select all that apply) a) Assess for signs of decreased cardiac output b) Notify the healthcare provider if symptomatic c) Begin defibrillation d) Administer atropine if bradycardia and symptomatic 7) The nurse is interpreting an ECG and suspects a junctional rhythm. Which ECG findings support this suspicion? (Select all that apply) a) P waves that are inverted or occur after the QRS b) QRS duration greater than 0.12 seconds c) Regular rhythm d) No visible P waves 8) In which clinical scenarios should the nurse be most concerned about a junctional rhythm? (Select all that apply) a) The patient is asymptomatic with a heart rate of 55 bpm b) The patient reports dizziness and has a heart rate of 38 bpm c) The patient is post-MI with junctional rhythm on telemetry d) The patient is hypotensive with a junctional rhythm e) The patient is exercising with a heart rate of 100 bpm

Junctional Rhythms 2

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