A Physical Examination of the Chest Is Performed on a Patient

Multiple Choice

A physical examination of the chest is performed on a patient who is being mechanically ventilated.Breath sounds and percussion are normal except over the right middle lobe,where late inspiratory crackles are heard.This area is dull to percussion.An evaluative chest radiograph image reveals infiltrates in the right middle lobe.Based on these findings alone,which of the following is the most likely problem?

A) Pneumothorax in the right hemithorax
B) Congestive heart failure
C) Right middle lobe pneumonia
D) Asthma affecting the right side only