Why are people with dmd at a greater risk of repeated lower respiratory tract infections?

Answer: People with DMD have greater risk of lower respiratory tract infections because their clinical conditions become progressively worse due to progressive loss of respiratory muscular strength.

Explanation:

Duchene muscular dystrophy is a genetic condition that affects the muscle by causing progressive muscle degeration and weakness. This is cause when dystropin a protein that keep the muscle in good position is altered. People with DMD often have lower tract respiratory infection due to deterioration of muscular strength.