Final answer:
The nurse should expect the patient to experience left-sided heart failure due to mitral stenosis. This can lead to fluid accumulation in the lungs, causing shortness of breath on exertion.
Step-by-step explanation:
The nurse should expect the patient to experience left-sided heart failure due to mitral stenosis. Left-sided heart failure occurs when the left side of the heart is unable to pump blood effectively to the rest of the body. This can lead to fluid accumulation in the lungs, causing shortness of breath on exertion.