During an asthma attack, what would a chest x-ray most likely show?

During an asthma attack, a chest x-ray typically shows moderate hyperinflation of the lungs. This hyperinflation occurs due to the obstruction of airways, leading to trapped air in the lungs which is a characteristic finding during an acute asthma episode. The lungs cannot fully exhale, making them appear more expanded on imaging studies.

This observation is significant in the context of asthma, wherein the inflammation and bronchoconstriction can lead to an increase in lung volume during an attack. The x-ray may also show other changes associated with bronchial obstruction, but hyperinflation is the primary and most easily identified feature.

In contrast, the presence of minor infiltrates would suggest some degree of pulmonary interstitial edema or infection but does not specifically correlate with asthma. The diaphragm position can be affected by different lung volumes; however, an elevated diaphragm often indicates conditions such as atelectasis or a pleural effusion, which are not typical in asthma. Blunting of the costophrenic angle often indicates pleural effusion rather than asthma and is not a common finding during an asthmatic attack.