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Acute exacerbation of idiopathic pulmonary fibrosis: a clinical review.

ABSTRACT: Idiopathic pulmonary fibrosis (IPF) is a chronic and progressive fibrotic disease limited to the lung, with high variability in the course of disease from one patient to another. Patients with IPF may experience acute respiratory deteriorations; many of these acute declines are idiopathic and are termed acute exacerbations (AE) of IPF. In these cases, the exclusion of alternative causes of rapid deterioration, including heart failure, bilateral pneumonia or pulmonary embolism, is a challenging goal. AE may occur at any time during the course of IPF, although they are more common in patients with more progressive disease and gastroesophageal reflux. Surgical lung biopsy or even surgical procedures in organs other than the lungs may also trigger AE, mainly in rapidly progressive or advanced IPF. Current diagnostic criteria include the presence of new-onset ground glass opacities or airspace consolidation superimposed on an underlying usual interstitial pneumonia pattern seen on high-resolution computed tomography. The outcome is poor with a short-term mortality in excess of 50% despite therapy. Currently, there is no treatment with demonstrated efficacy for AE-IPF: empirical high-dose corticosteroid therapy is generally used, with or without immunosuppressive agents, with limited evidence. On the other hand, there is hope that new treatments to slow down progression of IPF will translate into a reduction of AE-IPF's occurrence. In conclusion, although significant progress in assessing disease severity in IPF has been made, AEs remain unpredictable and are associated with a high risk of death. Improvements in our understanding of the etiology, risk factors, clinical predictors and epidemiology are needed. It is the goal of clinical researchers in the field to provide respiratory physicians with evidence-based guidance to identify patients who may benefit from therapy for preventing or treating AE-IPF.

SUBMITTER: Luppi F

PROVIDER: S-EPMC7089322 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Acute exacerbation of idiopathic pulmonary fibrosis: a clinical review.

Luppi Fabrizio F Cerri Stefania S Taddei Sofia S Ferrara Giovanni G Cottin Vincent V

Internal and emergency medicine 20150212 4

Idiopathic pulmonary fibrosis (IPF) is a chronic and progressive fibrotic disease limited to the lung, with high variability in the course of disease from one patient to another. Patients with IPF may experience acute respiratory deteriorations; many of these acute declines are idiopathic and are termed acute exacerbations (AE) of IPF. In these cases, the exclusion of alternative causes of rapid deterioration, including heart failure, bilateral pneumonia or pulmonary embolism, is a challenging g ...[more]

PMID: 25672832

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Project description:OBJECTIVE:To clarify prognostic factors of acute exacerbation (AE) of idiopathic pulmonary fibrosis (IPF). DESIGN:A systematic review and meta-analysis. DATA SOURCES:Medline, Embase and Science Citation Index Expanded were searched from 2002 through 1 March 2019. ELIGIBILITY CRITERIA FOR SELECTING STUDIES:The review included primary studies addressing the association between the outcomes such as all-cause mortality of AE of IPF and its potential prognostic factors, which were designated as any clinical information related to the outcomes. DATA EXTRACTION AND SYNTHESIS:Two reviewers extracted relevant data independently and assessed risk of bias. Univariate results were pooled using a random-effect model if at least three studies were available. Prognostic factors were determined based on significant and consistent results on both univariate and multivariate analyses in the majority of studies. RESULTS:Out of a total of 6763 articles retrieved, 37 were eligible and 31 potential prognostic factors for all-cause mortality were selected. Each study was subject to certain methodological shortcomings. The following five factors were statistically significant by a meta-analysis of univariate results, which was confirmed by multivariate analysis, that is, Acute Physiology and Chronic Health Evaluation (APACHE) II score (HR 1.10, 1.01 to 1.19), partial pressure of arterial oxygen to fraction of inspired oxygen (PaO2/FiO2) ratio (ORs 0.99 in two studies and HRs 0.31 and 0.99 in two studies, respectively), lactate dehydrogenase (LDH) (HRs 1.002, 1.003, 1.01 and 1.02), white blood cell (WBC) count (OR 1.38, 1.04 to 1.83) and oxygen therapy before AE (HRs 3.68, 1.05 to 12.9 and 2.34, 1.04 to 5.28) (multivariate analysis, 95% CI). CONCLUSIONS:APACHE II score, PaO2/FiO2 ratio, LDH, WBC count and oxygen therapy before AE were deemed as prognostic factors of AE of IPF. Although there are some methodological limitations in this study, these findings are reliable due to consistent results by both univariate and multivariate analyses. PROSPERO REGISTRATION NUMBER:CRD42018106172.

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Acute exacerbation of idiopathic pulmonary fibrosis: a clinical review.

Publications

Acute exacerbation of idiopathic pulmonary fibrosis: a clinical review.

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