<prompt> Persistent coarse crepitations in the chest are diagnostic of?Pulmonary TBPulmonary edemaCavity lesionBronchiectasis  <response>: Fine crackles Coarse crackles Soft, high-pitched and very brief Louder, lower in pitch and last longer Indicates an interstitial process- pulmonary fibrosis or congestive hea failure. Indicates an airway disease- bronchiectasis. 