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Clinical Compression: Case Studies

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1.  If a patient reports speech in not clear, what are some follow up questions you can ask to figure out the correct adjustment? What specific situations is speech unclear in? Is speech unclear at the time or just in noise? Is it a particular person that is unclear? All of the above

2.  "I hear sounds across the room better than right in front of me." What adjustment can you make? Increase gain for moderate inputs above 1000 Hz. Increase gain for soft inputs above 1000 Hz Increase gains for loud inputs above 1000 Hz A and C

3.  "All speech sounds mushy and unclear, in quiet and in noise." What adjustment can you make? Increase the gain for moderate and loud inputs Make expansion more aggressive Decrease CR's Both A and C

4.  ESTAT is based off what standardized fitting formula(s)? NAL R and NAL NL1 NAL NL1 and NAL NL2 NAL NL2 DSL

5.  NAL NL2 was developed in response to: NAL R and was the first non-linear fitting formula developed Years of research and user reports on NL1 being perceived as too loud DSL ESTAT

6.  In comparison to NL1, NL2 is characterized by: It is more linear Lower CR's Higher CR's It is louder for louder inputs

7.  If a patient reports sound is muffled, what are some follow-up questions you can ask or what other information do you need? Is it all sounds or specific sounds? If custom product, is there a vent? What size? Listening check, is there something wrong with mic or the receiver? All of the above

8.  If you want soft inputs to be amplified more than moderate and louder inputs what adjustments can you make? Increase the gain for soft sounds only Increase CRs Both A and B Switch to a linear fitting formula

9.  What type of patient would you switch to NAL R? Long time hearing aid user, used to linear sound Severe to profound hearing losses Someone who prefers a powerful sound quality All of the above

10.  In which situations should you consider raising the MPO? Speech is mushy Hearing aid compressing too quickly Sound is muffled All of the above