## acousticreflex_chart.jpg

The image is a table titled "TABLE 10-3: Summary of the Most Expected Acoustic Reflex Thresholds Results (italics) for the Different Types of Pathologies and Degree of Hearing Loss." The table is based on data from Kramer & Brown's "Audiology: Science to Practice" and references Gelfand et al. (1990).

The table categorizes different types of pathologies related to hearing loss, including conductive, cochlear, 8th nerve, 7th nerve, and functional, along with the expected acoustic reflex thresholds for each category.

### Table Structure:
- **Columns**: The table has columns labeled as follows: "Contra (probe in affected ear)," "Contra (stim in affected ear)," and "Corollary."
- **Rows**: Each row represents a different pathology type.
  
### Pathologies and Corresponding Thresholds:
1. **Conductive**:
   - If any ABG > 30 dB: No response
   - If perforation, PE tube, or impacted cerumen: No response

2. **Cochlear**:
   - Not relevant (dependent on stimulus in the affected ear)

3. **8th Nerve**:
   - If any loss <45 dB HL (<95%): No response
   - If any loss 50-70 dB HL: No response
   - If reflex >105: Abnormal reflex decay

4. **7th Nerve**:
   - Not relevant (dependent on stimulus in the affected ear)
   - If distal to stapedial branch (<95%): No response
   - If proximal to stapedial branch: No response or 100-115 dB HL

5. **Functional**:
   - Not relevant (dependent on stimulus in the affected ear)
   - If reflex <105: Abnormal reflex decay

### Additional Notes:
- The table includes a note at the bottom indicating that it is based on using a 1000 Hz reflex eliciting tone with an upper limit of 115 dB HL, and references Gelfand et al. (1990).
- It also mentions that data are based on contralateral recordings but notes that ipsilateral recordings can be used as well.
- The table includes a "Corollary" column which provides additional guidance for interpreting the results:
  - If reflex is normal range, there should not be any OE/ME path in the probe ear.
  - If no reflex and hearing loss >70 dB = “red flag” for 8th N pathway.

This table serves as a guide to help audiologists interpret acoustic reflex thresholds based on different types of hearing loss.

This description was generated automatically from image files by a local LLM, and thus, may not be fully accurate. Please feel free to ask questions if you have further questions about the nature of the image or its meaning within the presentation.