Difficulty: Medium
Average Score: 74%
Simulated
A client with peripheral vascular disease and chronic obstructive pulmonary disease takes theophylline (Theo-Dur) 200 mg twice daily every day. The physician is considering adding pentoxifylline (Trental) to the regimen. The nurse should be aware that:
Correct answer
B
Rationale
Pentoxifylline may increase theophylline levels by inhibiting its metabolism, potentially leading to toxicity (e.g., nausea, tachycardia). The nurse should monitor theophylline levels and symptoms. Bleeding risk, severe hypotension, or contraindication are not documented interactions.