Abstract
Purpose
Some patients with diffuse interstitial lung disease (ILD) undergo bronchoscopy with transbronchial biopsy (TBB) as part of their diagnostic evaluation. It is unclear what the incidence and risk factors for pneumothorax (PTX) following TBB are in this patient population.
Methods
Ninety-seven subjects with pulmonary fibrosis who underwent a research bronchoscopy with TBB as part of the multicenter correlating outcomes with biochemical markers to estimate time-progression in idiopathic pulmonary fibrosis (COMET) trial were retrospectively reviewed. We compared subjects who developed a PTX during research bronchoscopy with TBB versus those who did not.
Results
Seven patients (7.2%) experienced a PTX during research bronchoscopy with TBB. Subjects who experienced PTX during TBB had significantly lower DLCO percent predicted (29 ± 8 vs. 45 ± 15, P = 0.006) and had lower resting room air saturation of peripheral oxygen (SPO2) on 6-min walk testing (91 ± 10 vs. 95 ± 3, P = 0.02). No differences between groups were found with respect to age, gender, race, BMI, HRCT characteristics, or the number of transbronchial biopsies performed.
Conclusion
The incidence of PTX following research bronchoscopy with TBB in patients with pulmonary fibrosis was found to be 7.2% in this study. Patients who developed a pneumothorax had greater impairments in gas exchange at baseline evidenced by a lower DLCO % predicted and a lower resting room air SPO2 compared with subjects without PTX as a complication.
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Abbreviations
- 6MWT:
-
Six-minute walk test
- BAL:
-
Bronchoalveolar lavage
- BMI:
-
Body mass index
- COMET:
-
Correlating outcomes with biochemical markers to estimate time-progression in IPF
- COPD:
-
Chronic obstructive pulmonary disease
- DLCO :
-
Diffusion capacity of carbon monoxide
- FEV1 :
-
Forced expiratory volume in the first second
- FVC:
-
Forced vital capacity
- HRCT:
-
High-resolution computed tomography
- ILD:
-
Interstitial lung disease
- IPF:
-
Idiopathic pulmonary fibrosis
- NHANES:
-
National health and nutrition examination survey
- SPO2 :
-
Saturation of peripheral oxygen
- PTX:
-
Pneumothorax
- TBB:
-
Transbronchial biopsy
- UIP:
-
Usual interstitial pneumonia
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Funding
This work was supported by the National Institutes of Health (Grant 1RC2HL101740-01).
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Dr. Galli and Dr. Panetta contributed to the study concept and design, analysis and interpretation of data, and drafting and revision of the manuscript. Dr. Gaeckle performed statistical analysis, interpretation of data, and figure rendering. Dr. Criner served as the guarantor of the paper, contributed to the study concept and design, analysis and interpretation of the data, critical revision of the manuscript for important intellectual content, and approval of the final manuscript. Dr. Martinez, Dr. Bethany Moore, Dr. Thomas Moore, Dr. Courey, and Dr. Flaherty contributed to the study concept and design, and analysis and interpretation of the data.
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Galli, J.A., Panetta, N.L., Gaeckle, N. et al. Pneumothorax After Transbronchial Biopsy in Pulmonary Fibrosis: Lessons from the Multicenter COMET Trial. Lung 195, 537–543 (2017). https://doi.org/10.1007/s00408-017-0028-z
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DOI: https://doi.org/10.1007/s00408-017-0028-z