Related Experiment Video
Updated: Jul 10, 2025

A Murine Model of Hemodialysis Access-Related Hand Dysfunction
Published on: May 31, 2022
Feedback control in hemodialysis
Ashveer Randhay1,2, Mohamed Tarek Eldehni1,2, Nicholas M Selby1,2
1Centre for Kidney Research and Innovation, School of Medicine, University of Nottingham, Nottingham, UK.
Automated feedback systems in dialysis prospectively monitor patient physiology to adjust treatment in real-time. This review explores their mechanisms and clinical effectiveness for improved dialysis care.
Area of Science:
- Nephrology
- Biomedical Engineering
- Clinical Medicine
Background:
- Dialysis requires precise control of physiological parameters.
- Current dialysis methods often lack real-time adaptive adjustments.
- Intradialytic complications can arise from fixed treatment protocols.
Purpose of the Study:
- To review the rationale behind automated feedback control systems in dialysis.
- To describe the working principles of various feedback systems.
- To evaluate the clinical evidence supporting these advanced dialysis technologies.
Main Methods:
- Review of existing literature on feedback control systems in dialysis.
- Analysis of systems based on relative blood volume, blood temperature, and sodium balance monitoring.
- Discussion of automated adjustments in ultrafiltration, dialysate conductivity, and dialysate temperature.
Main Results:
- Feedback systems prospectively measure physiological parameters.
- Automated adjustments are made to dialysis parameters in real-time.
- Systems target intradialytic hypotension and sodium balance management.
Conclusions:
- Automated feedback systems offer a promising approach to optimize dialysis treatment.
- Real-time physiological monitoring and parameter adjustment enhance patient safety and treatment efficacy.
- Further research and clinical integration of these systems are warranted.
Related Concept Videos
Dialysis
Acute kidney injury develops suddenly and can be caused by pre-renal causes (e.g., hypovolemia, shock), intrinsic renal causes (e.g., acute tubular necrosis), or post-renal causes (e.g., urinary obstruction). In contrast, chronic renal failure progresses gradually over time and is often...
Glomerular Filtration Rate and its Regulation
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
Heart Failure Drugs: Diuretics
Renal Failure: Dose Adjustments
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
Filtration and Urine Formation
Renal Regulation of Acid-Base Balance
In the kidneys, cells within the proximal convoluted tubules (PCT) and the collecting ducts secrete hydrogen ions (H+) into the tubular fluid. Specifically, in the PCT, Na+/H+ antiporters secrete H+ while reabsorbing Na+.
However, the intercalated cells in...

