A Retrospective Study of Transbronchial Cryobiopsy in the Diagnosis of Progressive Pulmonary Fibrosis
The goal of this observational study is to learn about the diagnostic effectiveness, safety, and influencing factors of transbronchial cryobiopsy（TBLC） in progressive pulmonary fibrosis.
- EligibilityCriteria: Inclusion Criteria:  Patients with PPF, ≥18 years of age, unclassified ILD, HRCT ≤3 months, forced vital capacity (FVC)≥50% predicted value, pulmonary carbon monoxide diffusion (DLCO)≥35% predicted value, echocardiography ≤12 months, estimated pulmonary systolic blood pressure ≤40 mmHg, Body mass index (BMI)≤35 kg/m2.  Exclusion Criteria:  Patients with platelet counts below 50,000e+9/L or International Normalized ratio of prothrombin time (INR) above 1.5 are not eligible for TBLC - HealthyVolunteers: No - Gender: All - MinimumAge: 18 Years - MaximumAge: 80 Years - StdAgeList: Adult, Older Adult - StudyPopulation: Patients receiving TBLC for progressive pulmonary fibrosis - SamplingMethod: Probability Sample