The nurse is assessing the cardiac rhythm of a client who is admitted with coronary artery disease. The nurse notes that the PR interval is 0.24 and the QRS interval is 0.10. Which interpretation would be appropriate for the nurse to make

First degree heart block

Second degree heart block

Bundle branch block

Sinus arrhythmia

Answer and Explanation

The Correct Answer is A

A. First-degree heart block: A prolonged PR interval greater than 0.20 seconds, as seen in this case, indicates first-degree heart block, which is a delay in conduction at the AV node.

B. Second-degree heart block. Second-degree heart block is characterized by some PR intervals being prolonged with occasional dropped beats (non-conducted P waves).

C. Bundle branch block. Bundle branch block causes a wide QRS complex (greater than 0.12 seconds), which is not seen here.

D. Sinus arrhythmia. Sinus arrhythmia involves changes in heart rate due to respiratory cycles, not prolonged PR intervals.

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Correct Answer is ["A","B","C","D"]

Explanation

A. Hypothermia: Hypothermia can slow the heart rate, leading to bradycardia.

B. Calcium channel blockers medications: These medications can slow the conduction through the AV node, causing bradycardia.

C. Athletic conditioning: Athletes often have a lower resting heart rate due to increased parasympathetic tone, which can lead to sinus bradycardia.

D. Beta-blocker medications: Beta-blockers decrease heart rate by blocking the effects of adrenaline on the heart.

E. Hyperthyroidism: Hyperthyroidism usually leads to tachycardia, not bradycardia, due to increased metabolism.

A. Intermittent claudication and pallor B. Jugular vein distention and dependent edema C. Diaphoresis and cool, clammy skin D. Mid-epigastric pain and heartburn

Correct Answer is C

Explanation

A. Intermittent claudication and pallor: These symptoms are more indicative of peripheral vascular disease, not a myocardial infarction.

B. Jugular vein distention and dependent edema. These symptoms suggest right-sided heart failure or fluid overload, not myocardial infarction.

C. Diaphoresis and cool, clammy skin. Diaphoresis (sweating) and cool, clammy skin are common signs of myocardial infarction due to the body's response to pain and decreased cardiac output.

D. Mid-epigastric pain and heartburn. While heartburn can mimic some symptoms of a heart attack, mid-epigastric pain and heartburn are more likely to be related to gastrointestinal issues rather than myocardial infarction.

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The nurse is assessing the cardiac rhythm of a client who is admitted with coronary artery disease. The nurse notes that the PR interval is 0.24 and the QRS interval is 0.10. Which interpretation would be appropriate for the nurse to make

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Naxlex Comprehensive Predictor Exams

The nurse is caring for a client with sinus bradycardia. The nurse understands that this arrhythmia may be caused by which of the following? Select All That Apply

Correct Answer is ["A","B","C","D"]

Explanation

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Correct Answer is C

Explanation

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