• Yasuhiro Kondoh, Vincent Cottin, and Kevin K Brown.
• Dept of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan.
• Eur Respir Rev. 2017 Sep 30; 26 (145).

AbstractRecognising recent advances, the definition and diagnostic criteria for acute exacerbation of idiopathic pulmonary fibrosis (AE-IPF) have been updated by an international working group. The new definition describes any acute, clinically significant respiratory deterioration (both idiopathic and triggered events) characterised by evidence of new widespread alveolar abnormality. The new criteria require a previous or concurrent diagnosis of IPF, an acute worsening or development of dyspnoea typically less than 1 month in duration, chest imaging evidence on computed tomography (CT) of new bilateral ground-glass opacity and/or consolidation superimposed on a background imaging pattern of usual interstitial pneumonia not fully explained by cardiac failure or fluid overload. Due to high in-hospital mortality rates, current treatment guidelines say that the majority of patients with AE-IPF should not receive mechanical ventilation. However, new data suggest that the prognosis may have improved. This modest improvement in overall survival seen in more recent studies may be the result of differences in the diagnostic criteria, study design, baseline clinical risk factors and/or improvements in management. Based on our updated knowledge of possible preventive and therapeutic measures, including mechanical ventilation and pharmacological therapies, the current approach to the treatment of AE-IPF requires careful decision-making.Copyright ©ERS 2017.

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