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Updated: May 8, 2026

Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat
Published on: July 26, 2015
Estimated GFR reporting influences recommendations for dialysis initiation.
K Scott Brimble1, Rajnish Mehrotra, Marcello Tonelli
1Department of Medicine, McMaster University, Hamilton, Ontario, Canada;
Estimated glomerular filtration rate (eGFR) reporting modestly increases the likelihood of recommending dialysis initiation. Nephrologists should consider this effect when evaluating patients with severe chronic kidney disease.
Area of Science:
- Nephrology
- Clinical Medicine
- Medical Informatics
Background:
- Automated reporting of estimated glomerular filtration rate (eGFR) alongside serum creatinine is increasingly prevalent in clinical practice.
- The impact of this automated reporting on clinical decision-making, specifically for dialysis initiation, requires investigation.
Purpose of the Study:
- To determine if the reporting of eGFR influences nephrologists' recommendations for initiating dialysis.
- To quantify the effect of eGFR reporting on dialysis recommendations.
Main Methods:
- A survey was distributed to nephrologists in four countries, presenting clinical vignettes.
- Respondents were randomized to receive vignettes with either serum creatinine alone or serum creatinine with eGFR.
- Likelihood of recommending dialysis initiation was assessed using an 8-point Likert scale.
Main Results:
- Analysis of 822 responses revealed that eGFR reporting increased the predicted likelihood of recommending dialysis by 0.55 points (95% CI, 0.33-0.76).
- This effect was more pronounced for eGFRs greater than 5 ml/min per 1.73 m².
- Physicians with 13 or more years of practice were more influenced by eGFR reporting.
Conclusions:
- eGFR reporting has a modest but significant impact on the recommendation for dialysis initiation.
- Nephrologists should be aware of the potential influence of eGFR reporting when assessing patients with severe chronic kidney disease.
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