Understanding Newborn Hearing Test Results: LR & SWP Explained

In the context of newborn hearing tests, LR and SWP stand for:

- LR: This refers to the left response, which indicates the hearing ability of the left ear.

- SWP: This refers to the sound wave presentation, which represents the type of sound stimulus used during the hearing test.

Newborn hearing tests are typically conducted using two different types of sound wave presentations:

- Transient evoked otoacoustic emissions (TEOAE): This technique uses brief, rapid clicks or tones to stimulate the cochlea, and the resulting emissions are recorded.

- Auditory brainstem response (ABR): This technique uses a series of short clicks to stimulate the auditory nerve and brainstem, and the electrical responses are recorded.

The LR and SWP components of the newborn hearing test results indicate which ear was being tested and the type of sound stimulus that was used. By assessing the responses obtained for both LR and SWP, healthcare professionals can evaluate the hearing ability of the newborn in each ear.