Related Experiment Video
Updated: Sep 28, 2025
06:07
Osmotic Pump-based Drug-delivery for In Vivo Remyelination Research on the Central Nervous System
Published on: December 17, 2021
5.2K
Sodium-Based Osmotherapy in Continuous Renal Replacement Therapy: a Mathematical Approach
Jerry Yee1, Naushaba Mohiuddin2, Tudor Gradinariu1
1Division of Nephrology and Hypertension, Henry Ford Hospital, Detroit, Michigan; and.
Kidney360
|April 4, 2022
Summary
Rapidly correcting hyponatremia can harm vulnerable patients. This study proposes using sodium-based osmotherapy via continuous venovenous hemofiltration to safely manage plasma tonicity in critical care settings.
Area of Science:
- Nephrology
- Neurology
- Critical Care Medicine
Background:
- Hyponatremia, or low sodium levels, can lead to cerebral edema and brain injury.
- Rapid correction of hyponatremia poses a risk of osmotic demyelination syndrome, especially in patients with comorbidities like end-stage liver disease, heart failure, or traumatic brain injury.
- Patients with chronic kidney disease (CKD) or acute kidney injury (AKI) often have impaired urinary output, complicating fluid and electrolyte management.
Purpose of the Study:
- To present a strategic approach for controlled elevation of plasma tonicity in hyponatremic patients at risk of brain injury.
- To introduce sodium-based osmotherapy as a method to manage plasma sodium concentration safely.
Main Methods:
- Utilizing continuous venovenous hemofiltration (CVVH) as the delivery modality for osmotherapy.
- Employing a predilution technique within the CVVH circuit to administer sodium-based solutions.
- Monitoring plasma tonicity and sodium levels to guide therapy.
Main Results:
- Sodium-based osmotherapy via predilution CVVH allows for controlled increases in plasma sodium concentration.
- This method offers a potential strategy to mitigate the risk of overly rapid hyponatremia correction.
- The approach addresses the challenge of managing hyponatremia in patients with declining renal function.
Conclusions:
- Predilution continuous venovenous hemofiltration with sodium-based osmotherapy provides a viable strategy for managing hyponatremia.
- This technique can help prevent neurological complications associated with rapid sodium correction in vulnerable patient populations.
- It offers a controlled method to increase plasma tonicity in the context of kidney injury and hyponatremia.
Related Concept Videos
01:30Continuous Renal Replacement Therapy
160
Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
160
01:20Acute Kidney Injury V: Interprofessional Care
58
Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...
58
01:22Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion
125
The kidneys maintain homeostasis through filtration, reabsorption, and secretion. Tubular reabsorption and secretion are crucial in forming urine and regulating electrolytes, water balance, and waste elimination.Tubular Reabsorption and Secretion ProcessesTubular reabsorption is the process that reclaims essential substances such as electrolytes, glucose, amino acids, and water from the glomerular filtrate back into the bloodstream. This is achieved through passive and active transport...
125
01:22Heart Failure VI: Adjunct Therapies
47
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
47
01:29Renal Regulation of Acid-Base Balance
775
Metabolic reactions in the body produce nonvolatile acids, such as sulfuric acid, which generate an acid load of approximately 1 mEq of H+ per kilogram of body weight daily. Excreting H+ in the urine is essential to balance this acid load.
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...
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...
775
01:23Formation of Concentrated Urine
2.2K
There is a gradient of solutes in the interstitial fluid from the renal cortex through the medulla, known as the medullary osmotic gradient. The juxtamedullary nephrons establish and maintain this gradient using countercurrent mechanisms with loops extending deep into the medulla. These nephrons also use countercurrent mechanisms to regulate urine volume and concentration. The interaction between the descending and ascending limbs of the nephron loop creates an osmotic gradient through...
2.2K