A nurse is assessing a client who has COPD. The nurse should expect the client's chest to be which of the following shapes?

A. Serum amylase: Serum amylase is an enzyme associated with pancreatic function, and its elevation is not specific to myocardial infarction.

B. Unconjugated bilirubin: Elevation of unconjugated bilirubin is associated with liver function and hemolysis, not specifically with myocardial infarction.

C. Aspartate aminotransferase (AST): While AST may be elevated in conditions affecting the heart, it is not as specific or sensitive for myocardial infarction as troponin I.

D. Troponin I: This is the correct answer. Troponin I is a cardiac-specific biomarker released into the bloodstream when there is damage to cardiac muscle, such as during a myocardial infarction. Troponin I levels start to rise within 3-4 hours after the onset of myocardial infarction, making it a crucial marker for early detection.

A."I will follow a daily diet high in calories and protein": While maintaining adequate nutrition is important, emphasizing a diet high in calories may not be suitable. A balanced diet, including adequate protein, is recommended.

B."I will avoid getting a flu shot": Individuals with emphysema are at an increased risk of respiratory infections, including influenza. Getting a flu shot is generally recommended to reduce the risk of infection and complications.

C. "I will inhale slowly through pursed lips to help me breathe better."
This statement reflects a correct understanding of a beneficial breathing technique for individuals with emphysema. Inhaling slowly through pursed lips can help create back pressure in the airways, preventing them from collapsing and promoting better air exchange in the lungs. This technique can assist in managing shortness of breath and improving overall respiratory function.

D."I will lie on my stomach to practice abdominal breathing every day": While practicing abdominal breathing can be beneficial, lying on the stomach may not be the most practical or comfortable position for this purpose. The emphasis should be on proper breathing techniques, which can be done in various positions, including sitting or standing.