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

Hypothermia

Calcium channel blockers medications

Athletic conditioning

Beta-blocker medications

Hyperthyroidism

Answer and Explanation

Correct Answer : A,B,C,D

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.

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Correct Answer is D

Explanation

A. Ventricular aneurysm. Ventricular aneurysms are a complication that typically develops weeks or months after an MI.

B. Heart failure. While heart failure is a risk following an MI, it is more of a concern in the longer term after the acute phase.

C. Pulmonary embolism. Pulmonary embolism is not a direct complication of MI and is less common in the immediate post-MI period.

D. Dysrhythmia: Within the first 24 hours following a myocardial infarction, dysrhythmias, particularly ventricular arrhythmias, are common and can be life-threatening. This is the highest risk during the early period after MI.

A. Administration of prescribed Atropine B. A prescription for transcutaneous pacing. C. An extra dose of digoxin will be prescribed D. The next dose of digoxin will be held

Correct Answer is D

Explanation

A. Administration of prescribed Atropine. Atropine is typically used for bradycardia related to second-degree heart block Mobitz 2 or complete block, but Mobitz 1 usually resolves on its own and does not require atropine unless symptoms develop.

B. A prescription for transcutaneous pacing. Transcutaneous pacing is typically used for more severe types of heart block, such as Mobitz 2 or third-degree block, not Mobitz 1.

C. An extra dose of digoxin will be prescribed. Giving additional digoxin would be contraindicated due to its effects on AV conduction.

D. The next dose of digoxin will be held: Second-degree heart block Mobitz 1 (also known as Wenckebach) can be worsened by digoxin, which has a vagomimetic effect that can slow conduction through the AV node. Therefore, the next dose of digoxin should be held to avoid further exacerbating the block.

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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

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Naxlex Comprehensive Predictor Exams

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