Final answer:
The nurse would include headaches and chest pain, as well as breast tenderness, in a teaching plan about the signs and symptoms of thrombophlebitis and thromboembolism.
Step-by-step explanation:
The nurse would include headaches and chest pain, as well as breast tenderness, in a teaching plan about the signs and symptoms of thrombophlebitis and thromboembolism that should be reported by a patient taking estrogen. Thrombophlebitis is the inflammation of a vein with the formation of a blood clot, and thromboembolism is the obstruction of a blood vessel by a blood clot that has traveled from another part of the body. Both conditions can occur as side effects of estrogen therapy.