Final answer:
The nurse would most likely expect to find fever with chills, chest tightness after the child receives the first dose of Muromonab-CD3.
Step-by-step explanation:
The nurse would most likely expect to find fever with chills, chest tightness after the child receives the first dose of Muromonab-CD3. Muromonab-CD3 is a monoclonal antibody that is used to treat acute renal transplant rejection. It works by suppressing the immune response, but it can also cause side effects such as fever, chills, and chest tightness.