In which of the following conditions would late-inspiratory crackles be most likely to occur?
1) Emphysema
2) Pulmonary fibrosis
3) Pneumonia
4) Pulmonary edema

Question

Quizplus · Accepted Answer

Late-inspiratory crackles are most likely to occur in conditions where there is interstitial or alveolar fluid, such as in pulmonary fibrosis, pneumonia, and pulmonary edema. These crackles are caused by the sudden opening of small airways and alveoli that are closed off during expiration, a phenomenon more common in these conditions. Emphysema, on the other hand, is characterized by the destruction of alveolar walls and loss of lung elasticity, leading to a decrease in small airway patency, but not typically associated with late-inspiratory crackles.

In Which of the Following Conditions Would Late-Inspiratory Crackles Be