A nurse is reinforcing teaching with a client who has angina and a new prescription of nitroglycerin sublingual. Which of the following statements by the client indicates an understanding of the teaching?

A. Glucosamine. Glucosamine is a supplement used to support joint health, particularly in osteoarthritis. It does not have significant interactions with digoxin and is not known to affect cardiac function or digoxin metabolism, making it safe to use concurrently.

B. Garlic. Garlic has blood-thinning properties and may mildly lower blood pressure, but it does not directly interfere with digoxin metabolism. However, clients on anticoagulants or blood pressure medications should use garlic cautiously due to its potential to enhance their effects.

C. St. John's wort. St. John’s wort induces liver enzymes that can increase the metabolism of many medications, including digoxin. This can lead to decreased digoxin levels, reducing its effectiveness and increasing the risk of uncontrolled heart failure or atrial fibrillation. Clients taking digoxin should avoid St. John’s wort to maintain therapeutic drug levels.

D. Ginkgo biloba. Ginkgo biloba is primarily used to enhance cognitive function and circulation. While it has mild blood-thinning effects, it does not significantly impact digoxin metabolism. However, caution is advised in clients taking anticoagulants or antiplatelet medications to avoid an increased risk of bleeding.

• Blood pressure. The client's blood pressure dropped from 104/56 mm Hg to 80/46 mm Hg, indicating worsening hypotension. This suggests fluid volume depletion due to ongoing diarrhea and possible sepsis from Clostridium difficile infection. Hypotension is the priority concern as it can lead to shock and organ dysfunction if not addressed immediately. The nurse should anticipate fluid resuscitation with IV fluids to restore circulatory volume.
• Hgb level. The client's hemoglobin is 17 g/dL, which is elevated compared to normal values (12-16 g/dL). This suggests hemoconcentration, likely due to dehydration from severe diarrhea rather than an actual increase in red blood cell count. While this is concerning, the immediate priority is addressing hypotension before evaluating hemoglobin further.
• Temperature. The client has a persistent fever of 38.9°C (102°F), which indicates an active Clostridium difficile infection. While fever management is important, hypotension takes priority because it can lead to hypoperfusion and organ failure. Antipyretic medications and infection control measures can be initiated after stabilizing blood pressure.
• Potassium level. The client's potassium is 3.1 mEq/L, which is below the normal range (3.5-5.0 mEq/L). Diarrhea leads to potassium loss, increasing the risk of cardiac arrhythmias and muscle weakness. After stabilizing the client’s blood pressure, potassium replacement is critical to prevent life-threatening hypokalemia-related complications such as cardiac dysrhythmias.
• Abdominal findings. The client has a soft, distended abdomen with hyperactive bowel sounds and watery stools with mucus, consistent with Clostridium difficile infection. While these findings confirm the diagnosis, the more urgent issues of hypotension and electrolyte imbalances must be addressed first before further gastrointestinal assessment.
• Hct level. The hematocrit is elevated (48%), which aligns with hemoconcentration from dehydration. However, fluid resuscitation will help correct this, making it a secondary concern after addressing blood pressure and potassium levels.