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Exam 5: Junctional Rhythms

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Question 1

Essay

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Identify the following rhythm (lead II): ____________________

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Sinus tachycardia at...

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Question 2

Multiple Choice

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In a junctional rhythm viewed in lead II,where is the location of the P wave on the ECG if atrial depolarization precedes ventricular depolarization?

A) Before the QRS complex
B) During the QRS complex
C) After the QRS complex

D) All of the above
E) B) and C)

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Question 3

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The AV junction consists of the AV node and the nonbranching portion of the bundle of His.

Identify the following rhythm (lead II): ____________________

Identify the following rhythm (lead II): ____________________

A beat originating from the AV junction that appears later than the next expected sinus beat is called a(n)_____ _____ _____.

Identify the following rhythm (lead II): ____________________

Identify the following rhythm (lead II): ____________________

Identify the following rhythm (lead II): ____________________

Common causes of junctional dysrhythmias may include acute coronary syndromes and _____.

Identify the following rhythm (lead II): ____________________

Identify the following rhythm (lead II): ____________________

Which of the following medications increases heart rate by accelerating the SA node discharge rate and blocking the vagus nerve?

Complete the following ECG criteria for an accelerated junctional rhythm: Rlythm_________________________________________________________ Rate____________________________________________________________ P waves__________________________________________________________ PR interval__________________________________________________________ QRS duration________________________________________________________

The atrioventricular (AV) junction consists of the _____.

Identify the following rhythm (lead II) .

Identify the following rhythm (lead II): ____________________

Identify the following rhythm (lead II): ____________________

List four reasons why the AV junction may assume responsibility for pacing the heart.

Depending on the severity of the patient's signs and symptoms,management of slow rhythms originating from the AV junction may require intervention including _____.