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
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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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. A client with left-sided heart failure on oxygen via nasal cannula: This client is at risk for respiratory distress due to pulmonary congestion. Immediate assessment is needed to ensure oxygenation and manage potential deterioration.
B. A client with syncope who is being discharged today: This client is stable if being discharged, so assessment can be delayed.
C. A client scheduled for a cardiac ultrasound this morning: This is a non-urgent diagnostic procedure and does not take priority.
D. A client with controlled atrial fibrillation with a heart rate of 82: Controlled atrial fibrillation indicates stability, so this client can be assessed later.
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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