A client was seen in the emergency room with a complaint of severe episodes of vomiting and diarrhea, and complains of feeling lightheaded.
Which laboratory test should the nurse prioritize?

Choice B rationale

Potassium levels should be reviewed before administering furosemide. Furosemide is a loop diuretic that can cause significant potassium loss through increased urine output. Monitoring potassium is crucial to prevent hypokalemia, which can lead to cardiac arrhythmias and other serious complications.

Choice A rationale

Bicarbonate levels are not directly impacted by furosemide use and are less critical to review in this context. While they are important in assessing acid-base balance, they are not the primary concern when administering furosemide.

Choice C rationale

Phosphate levels are not typically affected by furosemide and are not the main focus before administration. Monitoring phosphate might be important in other scenarios, but it is not directly relevant here.

Choice D rationale

Carbon dioxide levels are more relevant to respiratory function and acid-base balance but are not directly impacted by furosemide. The focus should be on monitoring electrolytes, particularly potassium, to prevent complications from diuretic therapy.

Choice A rationale

Notifying the healthcare provider is necessary, but assessing the client's condition comes first to provide relevant information.

Choice B rationale

Assessing the client's vital signs and telemetry monitor is the first step to determine the cause of chest pain and ensure it is not due to a life-threatening issue such as myocardial infarction.

Choice C rationale

Encouraging the client to take deep breaths can be helpful but is not the first priority. It addresses pain related to breathing but not the underlying cause.

Choice D rationale

Administering pain medication is important, but only after determining the cause of the chest pain and ruling out serious complications.