A nurse is caring for a client who arrives at the emergency department and reports vomiting and diarrhea for the past 3 days. The client's serum potassium level is 2.8 mEq/L. Which of the following interventions should the nurse implement first?
Listen to the client's bowel sounds.
Initiate cardiac monitoring for the client.
Check the client's hand grasps
Administer an IV potassium drip
The Correct Answer is B
Choice A reason:
Listening to the client's bowel sounds should not be implemented. While assessing bowel sounds is important, it is not the highest priority in this situation. The client's low serum potassium level indicates the potential for serious cardiac arrhythmias, so actions related to monitoring and addressing this electrolyte imbalance are more critical.
Choice B reason:
Initiate cardiac monitoring for the client is the correct answer. A serum potassium level of 2.8 mEq/L is significantly low and can lead to life-threatening cardiac arrhythmias. Initiating cardiac monitoring is crucial to assess the client's heart rhythm and ensure that any potential abnormalities are identified promptly.
Choice C reason:
Check the client's hand grasps should not be implemented. Assessing the client's hand grasps can provide information about muscle strength, but it is not the immediate priority when the client has a critically low potassium level.
Choice D reason:
Administer an IV potassium drip should not be implemented. Administering IV potassium is important for correcting the potassium imbalance, but the priority is to assess and monitor the client's cardiac status first. Rapid administration of potassium can lead to cardiac arrhythmias, so it's important to ensure the heart's stability through cardiac monitoring before administering potassium.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason:
WBC count 8,400/mm3 is not appropriate. This white blood cell count is within the normal range and is not a cause for concern.
Choice B reason:
Serosanguineous exudate noted on dressing change is not appropriate. Serosanguineous drainage is a normal finding in the early stages of wound healing and is expected after surgery.
Choice C reason:
Reports pain of 4 on a scale from 0 to 10 when coughing is not appropriate. A pain level of 4 out of 10 with coughing is a common and expected finding following an appendectomy. It's important for the nurse to assess and manage pain, but this is not an urgent concern.
Choice D reason:
Haemoglobin 10 mg/dL is appropriate. Haemoglobin level of 10 mg/dL indicates a low level of haemoglobin, which might suggest anaemia or blood loss. Reporting this finding to the provider is important as it could indicate a need for further evaluation or intervention.

Correct Answer is B
Explanation
Choice A Reason:
Decreased bowel sounds: Hyponatremia (low serum sodium levels) primarily affects the nervous system and can lead to neurological symptoms such as confusion, seizures, and headache. It doesn't typically directly affect bowel sounds. Therefore, this option is not the expected finding.
Choice B Reason:
Increased central venous pressure: As I mentioned earlier, hyponatremia can lead to cerebral edema (swelling of the brain) due to the movement of water into cells. This swelling can increase intracranial pressure and, in turn, affect the central venous pressure by impacting blood return to the heart. While the relationship between hyponatremia and central venous pressure might be complex, it's a more relevant consideration compared to the other options provided.
Choice C Reason:
Hyperreflexia: Hyponatremia can lead to changes in brain function and neurological symptoms, including altered reflexes. Hyperreflexia, which is an exaggerated response to stimuli, can indeed be a manifestation of hyponatremia, making this option a potential expected finding.
Choice D Reason:
Contusion: A contusion is a bruise that results from damage to blood vessels beneath the skin. Hyponatremia is not directly related to the formation of contusions. This option is not the expected finding in a client with low serum sodium levels.
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