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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Heart rate of 134 bpm. A heart rate of 134 bpm is expected during a cardiac stress test, as the goal is to increase the heart rate to a target range to evaluate cardiac function under stress.
B. Mild shortness of breath. Mild shortness of breath is a common response to exercise and is not an indication to stop the test unless it becomes severe or is accompanied by other concerning symptoms like chest pain or cyanosis.
C. Three premature ventricular contractions in a row indicate a potential serious arrhythmia (ventricular tachycardia), which is a contraindication for continuing the stress test. This finding could place the client at risk for life-threatening cardiac events, such as ventricular fibrillation.
D. Blood pressure 152/88 mmHg. This is a slightly elevated but normal physiological response to exercise and does not warrant discontinuation of the test unless the blood pressure rises to dangerously high levels (e.g., >200/110 mmHg).
Correct Answer is A
Explanation
A. Administer oxygen via nasal cannula: The client's symptoms of dyspnea, chest pain, syncope, and hypotension suggest a possible acute cardiovascular event, such as a myocardial infarction (MI) or pulmonary embolism (PE). Administering oxygen should be the priority to improve oxygenation and prevent hypoxia, which could exacerbate the client's symptoms and further compromise cardiac function.
B. Administer prescribed pain medications. Pain relief may be necessary, but stabilizing oxygen levels is the priority.
C. Administer NS IV fluid. Fluid administration may be helpful, but oxygenation is more critical in this situation to address the potential underlying respiratory or cardiac issue.
D. Ask the provider for a dopamine prescription. While dopamine may be used in cases of shock, the immediate action should be to ensure the client is adequately oxygenated.
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