Final answer:
The nurse should be observant for complications such as hypotension, muscle cramps, and bladder infection during hemodialysis for chronic kidney disease.
Step-by-step explanation:
During hemodialysis for chronic kidney disease, the nurse should be observant for several complications. These include hypotension (low blood pressure), which can occur as a result of fluid removal during dialysis, and muscle cramps, which may be caused by electrolyte imbalances. Additionally, the nurse should monitor for bladder infection as a potential complication of the procedure. However, renal calculi (kidney stones) and hepatitis type B are not commonly associated with hemodialysis.