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Long-term outcomes in chronic hypersensitivity pneumonitis
Iñigo Ojanguren1,2, Ferran Morell1,2, María-Antonia Ramón1
1Servicio de Neumología, Departamento de Medicina, Hospital Universitario Vall d'Hebron, Universidad Autónoma de Barcelona, Barcelona, Cataluña, España.
Allergy
|December 6, 2018
Summary
Chronic hypersensitivity pneumonitis (CHP) is a severe lung disease with a poor prognosis. Key survival predictors include age, lymphocyte counts, lung function (DLCO), and specific imaging/histology findings, highlighting the need for early diagnosis and antigen avoidance.
Area of Science:
- Pulmonology
- Immunology
- Radiology
Background:
- Chronic hypersensitivity pneumonitis (CHP) is a significant cause of interstitial lung disease.
- Understanding mortality and prognostic factors is crucial for patient management.
Purpose of the Study:
- To analyze mortality and identify predictors of long-term survival in a large cohort of CHP patients.
- To assess the health-related quality of life in individuals with CHP.
Main Methods:
- A longitudinal study followed 160 patients diagnosed with CHP between 2004 and 2013.
- Follow-up included pulmonary function tests, EuroQol-5D, and depression/anxiety inventories.
Main Results:
- The median survival was 7.0 years, with 87 out of 160 patients surviving.
- Predictors of lower survival included older age, low BAL lymphocytes, decreased DLCO, honeycomb on HRCT, and UIP pattern.
- All patients reported reduced quality of life (EuroQol-5D <0.8), with high rates of anxiety and depression.
Conclusions:
- CHP has a severe mid-term prognosis.
- BAL lymphocyte counts, baseline DLCO, HRCT honeycomb, and UIP pattern predict survival.
- Early diagnosis and antigen avoidance are critical for improving outcomes.
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