The nurse is caring for a client with a heart rate of 48. His blood pressure is 120/80. Which finding will help the nurse determine the cause of the client's bradycardia?
The client has a fever.
The client has possible hemorrhage or bleeding.
The client has chronic obstructive pulmonary disease (COPD).
The client has calcium channel blocker medicate prescribed.
The Correct Answer is D
A. Fever can cause tachycardia (increased heart rate) rather than bradycardia. It is not typically associated with slowing of the heart rate unless there are other complicating factors such as severe infection or medication side effects.
B. Significant blood loss can lead to hypovolemia (low blood volume), which can result in bradycardia as a compensatory mechanism to maintain blood pressure. However, the blood pressure in this scenario is
normal (120/80), which makes severe hemorrhage less likely unless compensated by fluid resuscitation or other factors.
C. COPD can cause chronic hypoxia and respiratory acidosis, which can lead to chronic respiratory compensation and potentially bradycardia. However, COPD alone is less likely to cause bradycardia in the absence of severe exacerbation or other complicating factors.
D. Calcium channel blockers (CCBs) are medications commonly prescribed for conditions such as hypertension, angina, and arrhythmias. They work by blocking calcium channels in cardiac and smooth muscle cells, resulting in decreased heart rate and vasodilation. Bradycardia is a known side effect of CCBs, especially when taken in excess or in combination with other medications that affect heart rate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Postoperative ileus and significant drainage via an NG tube are more likely to lead to electrolyte losses rather than elevated levels. Elevated magnesium levels are less common and typically associated with conditions such as renal failure or excessive magnesium intake.
B. Calcium levels can be affected by gastrointestinal losses, including drainage via an NG tube. Significant fluid loss can lead to hemoconcentration, potentially causing a relative increase in calcium levels initially. However, prolonged fluid loss can lead to overall depletion of electrolytes, including calcium.
C. When fluids are lost through the NG tube, potassium, which is an intracellular electrolyte, can be lost in large amounts. Prolonged drainage can lead to hypokalemia (decreased potassium levels), which can result in muscle weakness, cardiac dysrhythmias, and other serious complications.
D. Elevated sodium levels (hypernatremia) are more commonly associated with dehydration or excessive sodium intake rather than drainage via an NG tube. In this scenario, sodium levels are less likely to be affected compared to potassium.
Correct Answer is ["28"]
Explanation
(Volume in mL * Drop Factor) / Time in minutes.
Volume is 1,000 mL, the drop factor is 10 gtt/mL, and the time is 6 hours.
First, convert the hours into minutes (6 hours * 60 minutes/hour = 360 minutes). Then, multiply the volume by the drop factor (1,000 mL * 10 gtt/mL = 10,000 gtt).
Finally, divide this number by the total time in minutes (10,000 gtt / 360 minutes ≈ 27.78
gtt/min).
Rounding to the nearest whole number, the nurse should set the manual IV infusion to deliver 28 gtt/min.
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