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Measurement of Tissue Oxygenation Using Near-Infrared Spectroscopy in Patients Undergoing Hemodialysis
Published on: October 2, 2020
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Tympanogram Findings in Hemodialysis Patients
Ates Mehmet Aksit1, Emel Pektas2, Mahmut Tayyar Kalcioglu3
1Department of Audiology, Near East University, Nicosia, North Cyprus.
The Journal of Craniofacial Surgery
|November 28, 2018
Summary
Changes in cerebrospinal fluid (CSF) pressure during hemodialysis (HD) may be reflected in tympanometric measurements. Static compliance decreased post-HD, correlating with dialysis adequacy.
Area of Science:
- Nephrology
- Audiology
- Neurology
Background:
- Cerebrospinal fluid (CSF) pressure dynamics during hemodialysis (HD) are not fully understood.
- Previous research has not extensively explored the link between HD-induced CSF pressure changes and middle ear function.
- Tympanometry offers a non-invasive method to assess middle ear characteristics.
Purpose of the Study:
- To investigate the relationship between changes in CSF pressure during HD and tympanometric measurements.
- To determine if HD treatment influences middle ear static compliance and absorbance.
- To correlate tympanometric findings with dialysis adequacy parameters.
Main Methods:
- A cohort of 24 patients undergoing HD was studied.
- Wideband tympanometry was used to measure static compliance and absorbance before and immediately after HD sessions.
- Urea reduction rate and Kt/V were used to assess dialysis adequacy.
Main Results:
- Static compliance values significantly decreased after HD compared to pre-HD measurements.
- The reduction in static compliance correlated significantly with dialysis adequacy (urea reduction rate and Kt/V).
- Absorbance values showed a significant decrease at 343 Hz and 727 Hz, indicating an influence of HD on middle ear function.
Conclusions:
- HD treatment significantly impacts middle ear static compliance and absorbance.
- The observed changes in tympanometry may be associated with increased CSF pressure during HD, potentially due to urea removal.
- Tympanometry could serve as a potential indicator of HD-induced physiological changes.
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