Final answer:
Following a pyelolithotomy through a flank incision, the nurse would expect to find breath sounds that are diminished on the operative side.
Step-by-step explanation:
Following a pyelolithotomy through a flank incision, the nurse would expect to find breath sounds that are diminished on the operative side. This is because the surgical procedure involves accessing the kidney through a flank incision, which can affect the functioning of the lung on the same side. The nonoperative side would have relatively clear breath sounds as it is unaffected by the surgery.