Abstract
Despite its weaknesses, blood urea nitrogen reduction ratio (BUNRR) remains a useful indicator of dialysis efficiency (DE) in a majority of patients. However assessment of DE is infrequent in sub-Saharan Africa due to the additional cost of laboratory testing and the risk of worsening anemia from blood sampling. With the observation that saliva urea nitrogen (SUN) decreases in parallel with BUN reduction during dialysis, we sought to evaluate the performance of Saliva Urea Nitrogen Reduction Ratio (SUNRR) as a measure of dialysis efficiency in patients undergoing maintenance hemodialysis.
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