Prognosis
Eight subjects (8/21, 38.1%) died; six (6/21, 28.6%) died due to respiratory failure after BOS diagnosis, one died from fungal infection, and one died from acute renal failure. The mean time before death after BOS diagnosis was 18.6±15.1 months. Five subjects (5/21, 23.8%) underwent lung transplantation, and the mean time before lung transplantation after BOS diagnosis was 30.4±28.0 months. In addition, 15 subjects (15/21, 71.4%) underwent O2 therapy, and the mean time before O2 therapy after BOS diagnosis was 17.6±19.8 months (Table 1). We used O2 therapy and death or lung TPL to analyze the prognosis of BOS.