Management of toxicities associated with BEP in poor-risk testicular NSGCT

A 50-year-old man presents to the hospital with complaints of shortness of breath and dry cough. He says that his condition has progressively worsened over the last couple of weeks. His past medical history is significant for testicular cancer, for which he was treated with chemotherapy. Physical exam findings are as follows: pulse 100/min, blood pressure 120/75 mmHg, temperature 37ºC, and O2 saturation 91% on room air. A chest x-ray shows a ground-glass appearance.

Which of the given is the best approach?