Acute exacerbation of chronic bronchitis: need for an evidence-based approach
Abstract
Acute exacerbations of chronic bronchitis (AECB) can be classified into three levels according to severity: (1) home treatment sufficient; (2) hospitalisation required; (3) hospitalisation in the presence of respiratory failure. This evidence-based classification is useful in ranking the clinical relevance of the episode and its outcome, and makes it possible to define the clinical history, clinical evaluation and diagnostic procedures of an exacerbation. Treatment guidelines vary according to severity, but they are essentially based on appropriate bronchodilator therapy (beta(2) agonists and/or anticholinergics, corticosteroids and antibiotics selected according to the local bacterial resistance pattern). It is important that cases requiring management in an intermediate/special respiratory care unit or intensive care unit (ICU) be identified. This is the stage where oxygen therapy and ventilatory support become particularly important. As first choice, they should be non-invasive, saving intubation and invasive ventilatory support for most severe cases characterised by severe acidemia and hypercapnia. We identify the optimal criteria for hospital discharge and follow-up of patients with AECB. In view of the chronic nature of the underlying disease, a correct follow-up is essential to avoid frequent and repeated relapses.
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