The effect of non-diabetic chronic renal failure on olfactory function

Area of Science:

• Nephrology
• Otolaryngology

Background:

• Chronic renal failure (CRF) leads to metabolite accumulation, impacting organ function.
• Olfactory dysfunction is a potential complication of CRF.

Purpose of the Study:

• To investigate olfactory functions in non-diabetic CRF patients.
• To determine if hemodialysis or peritoneal dialysis improves olfactory function in CRF patients.

Main Methods:

• Olfactory function analysis using the "Sniffin' sticks" test.
• Comparison of olfactory function across three groups: CRF patients not on dialysis, CRF patients on dialysis (hemodialysis or peritoneal), and healthy controls.
• Exclusion of diabetic patients to isolate the effects of CRF on olfaction.

Main Results:

• Patients with CRF exhibited impaired olfactory test parameters compared to healthy controls (median TDI scores 24.75 vs. 32.5, P<0.001).
• Olfactory function was significantly better in CRF patients undergoing dialysis compared to those not on dialysis (P=0.020).

Conclusions:

• Non-diabetic chronic renal failure negatively impacts olfactory function.
• Dialysis therapy demonstrates a positive effect on improving olfactory function in CRF patients.