What does egophony refer to?

Egophony is a clinical term used to describe a specific change in vocal resonance that can be auscultated during a physical examination of the lungs. When a healthcare provider asks a patient to say the letter "E," abnormal findings can reveal a characteristic change where the sound is perceived as more like an "A." This phenomenon typically indicates the presence of lung pathology, such as pneumonia or pleural effusion.

The alteration in sound indicates that the sound waves are being transmitted differently due to changes in the lung or pleural space, allowing for the identification of areas of consolidation or other issues. This makes recognizing egophony an essential skill in respiratory assessment, aiding healthcare providers in diagnosing underlying conditions effectively.