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Osmotic Gradient Across the Peritoneum
- Molecular classification
- Physiological Process, Fluid Dynamics
01
Overview
The "osmotic gradient across the peritoneum" refers not to a molecule but rather a dynamic physiological force essential for fluid removal during peritoneal dialysis (PD). Its effectiveness depends on properties like pore structure, choice/concentration/osmolarity/reflection coefficient of dialysate agents, and integrity/functionality of both cellular channels and tissue architecture over time. This gradient drives transcapillary water movement, facilitating the removal of excess fluid and waste products from patients with renal failure.
- Other names
- Peritoneal Osmotic GradientTransperitoneal Osmotic GradientOsmotic Pressure Difference (Peritoneal Dialysis)Ultrafiltration Gradient (PD)
02
Mechanism of action
Osmosis driven by solute concentration differences across the peritoneal membrane, facilitated by aquaporins and small/large pores. Higher dialysate osmolality leads to increased water removal from blood into the peritoneal cavity.
03
Biological functions
UltrafiltrationFluid BalanceWaste Removal (Peritoneal Dialysis)
04
Disease associations
Renal FailureFluid OverloadUremiaPeritoneal Dialysis Complications (e.g., Ultrafiltration Failure)
05
Safety considerations
Ultrafiltration FailurePeritoneal Fibrosis/SclerosisEncapsulating Peritoneal Sclerosis (EPS)Glucose Absorption (leading to hyperglycemia)Electrolyte ImbalanceHypovolemia/Dehydration (if excessive ultrafiltration)Hypervolemia (if inadequate ultrafiltration)
06
Interacting drugs
Glucose (Dextrose)
3 more in the full profile.
07
Biomarkers
Ultrafiltration VolumeDialysate Glucose ConcentrationPeritoneal Membrane Permeability (e.g., D/P Creatinine Ratio)Reflection Coefficient (of Dialysate Agents)Aquaporin-1 ExpressionPeritoneal Fibrosis Markers (e.g., Collagen I, Fibronectin)
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