The advanced practice registered nurse (APRN) suspects a diagnosis of pneumonia in a 13 year-old patient presenting with cough, dyspnea, and fever. The APRN auscultates the lungs while asking the patient to say "E" and the APRN hears "A". What is the name of this test?

A. Whisper pectoriloquy is incorrect because this test involves asking the patient to whisper a phrase, such as “one-two-three,” while auscultating the lungs. In whispered pectoriloquy, increased clarity or loudness of the whispered sound suggests consolidation, but it does not involve the characteristic “E” to “A” change. B. Egophony is correct because egophony is a change in the quality of the voice sound when auscultating the lungs. Normally, when a patient says “E,” it should sound like “E” through the stethoscope. In areas of lung consolidation, such as in pneumonia, the sound is transmitted differently, and “E” is heard as an “A,” which is a classic sign of alveolar consolidation. C. Fremitus is incorrect because tactile fremitus is assessed by palpating the chest while the patient repeats a phrase like “ninety-nine.” Increased fremitus can indicate consolidation, but it is palpated, not auscultated, and does not involve hearing the “E” to “A” change. D. Bronchophony is incorrect because bronchophony involves asking the patient to say a phrase in a normal voice, such as “ninety-nine,” and auscultating for increased clarity or loudness. While both bronchophony and egophony indicate consolidation, egophony is specifically the “E” to “A” change, which is a classic sign of pneumonia.