Table 2—

Clinical and laboratory findings at the time of acute exacerbation(AE; by Kondoh's criteria)

Mean±SDRange
Duration from IPF diagnosis months13.3±11.73–60
Duration of acute symptom before admission days13.0±10.72–30
Fever n1
Pa,O2/FI,O2183±26.099–227
Bronchoalveolar lavage fluid finding
 Macrophages %45.6±23.913–90
 Lymphocytes %28.6±18.53–48
 Neutrophils %24.7±16.95–48
 Eosinophils %2.7±3.61–15
WBC×103·mm−312.2±3.76.6–17.8
C-reactive protein12.6±6.03.5–20.3
Corticosteroid pulse therapy n6
ICU admission n10
Mechanical ventilation n9
Mortality within 3 months n9
Duration between the AE and death days33.2±21.411–70
  • IPF: idiopathic pulmonary fibrosis; Pa,O2: arterial oxygen tension; FI,O2: inspired oxygen tension; WBC: white blood cells; ICU: intensive care unit.