A nurse in the emergency department is assisting in the care of a 45-year-old female client who presents with abdominal symptoms.

Complete the following sentence by using the lists of options: The nurse should first address the client’s

______

, followed by the client’s

_________

.

The nurse should first address the client’s Hypokalemia, followed by the client’s Hypovolemia.

Rationale for Correct Answers

Hypokalemia (serum potassium 3.1 mEq/L; normal: 3.5–5.0 mEq/L) is the most immediate concern. Potassium is critical for cardiac and neuromuscular function. In Clostridium difficile infection (CDI), profuse diarrhea leads to significant potassium loss, increasing the risk of arrhythmias and muscle weakness. Prompt correction is essential to prevent life-threatening complications.

Hypovolemia is the next priority. The client has signs of fluid loss: diarrhea, low blood pressure (104/56 mm Hg), elevated heart rate (102/min), and hemoconcentration (hematocrit 48%, hemoglobin 17 g/dL). These findings suggest volume depletion due to fluid loss from diarrhea. Hypovolemia can progress to shock if not corrected.

Rationale for Incorrect Response 1 Options

Hypertension is not present; the client is hypotensive, likely due to fluid loss.

Hypoxemia is not a concern; oxygen saturation is 96% on room air, indicating adequate oxygenation.

Fever (38.9°C) is expected in CDI but is not immediately life-threatening. It should be addressed after correcting electrolyte and fluid imbalances.

Rationale for Incorrect Response 2 Options

Dehydration is a general term; hypovolemia more accurately reflects the intravascular fluid deficit requiring urgent intervention.

Hyperglycemia is not reported and is not relevant to this case.

Tachycardia is a symptom of hypovolemia, not a primary issue. Treating the underlying fluid loss will resolve the elevated heart rate.

Take-Home Points

• Clostridium difficile infection often follows recent antibiotic use and presents with watery diarrhea, fever, and abdominal cramping.
• Hypokalemia from diarrhea must be corrected promptly to prevent cardiac complications.
• Hypovolemia is a critical concern in CDI and requires fluid resuscitation.
• CDI should be differentiated from other causes of diarrhea, such as inflammatory bowel disease or viral gastroenteritis.

Choice A rationale

Jaundice, a yellow discoloration of the skin and sclera, indicates liver dysfunction or hemolysis. While some medications can cause hepatotoxicity, the combination of cefotetan and an NSAID does not primarily or commonly lead to jaundice through direct interaction mechanisms to warrant monitoring as the primary concern.

Choice B rationale

Dizziness can be a side effect of various medications but is not a specific or prominent interaction risk between cefotetan and NSAIDs. NSAIDs can cause dizziness, but the interaction with cefotetan primarily concerns other physiological systems, especially those related to coagulation.

Choice C rationale

Bleeding is a significant concern when NSAIDs are co-administered with certain antibiotics, including cefotetan. NSAIDs inhibit platelet aggregation by blocking cyclooxygenase, reducing thromboxane A2. Cefotetan, a second-generation cephalosporin, can also interfere with vitamin K metabolism, leading to hypoprothrombinemia, thus synergistically increasing the risk of hemorrhage.

Choice D rationale

Dysrhythmias, abnormal heart rhythms, are not a recognized primary interaction between cefotetan and NSAIDs. While certain medications can affect cardiac electrical activity, the interaction between these two drug classes is predominantly related to their impact on coagulation and gastrointestinal integrity.