Final answer:
The nurse should report increased shortness of breath to the provider, as it may indicate worsening heart failure.
Step-by-step explanation:
The nurse should report increased shortness of breath to the provider. Shortness of breath can be a sign of worsening heart failure, indicating that the client's condition may not be improving as expected. It is important for the nurse to communicate this change in symptoms to the provider to ensure appropriate medical intervention.