Publications by authors named "Freida P"

Background: Evidence is accumulating that the continuous exposure to high glucose concentrations during peritoneal dialysis (PD) is an important cause of ultrafiltration (UF) failure. The cornerstone of prevention and treatment of UF failure is reduction of glucose exposure, which will also alleviate the systemic impact of significant free glucose absorption. The challenge for the future is to discover new therapeutic strategies to enhance fluid and sodium removal while diminishing glucose load and exposure using combinations of available osmotic agents.

View Article and Find Full Text PDF

Background: Controlling extracellular volume and plasma sodium concentration are two crucial objectives of dialysis therapy, as inadequate sodium and fluid removal by dialysis may result in extracellular volume overload, hypertension, and increased cardiovascular morbidity and mortality in end-stage renal disease patients. A new concept to enhance sodium and fluid removal during peritoneal dialysis (PD) is the use of dialysis solutions with two different osmotic agents.

Aim: To investigate and compare, with the help of mathematical modeling and computer simulations, fluid and solute transport during PD with conventional dialysis fluids (3.

View Article and Find Full Text PDF

The achievement of euvolemia is essential to the successful management of peritoneal dialysis patients. However, the concern that hypertonic glucose exchanges may have a role in long-term changes to the peritoneal membrane has lead to an alternative strategy to enhance ultrafiltration (UF) over the long dwell by combining crystalloid and colloid osmosis. This review summarizes the experience of mixing glucose or amino acids with polyglucose (icodextrin), with particular focus given to data from studies using glucose/icodextrin in combinations of 1.

View Article and Find Full Text PDF

Cardiovascular disease remains the leading cause of death in ESRD patients related to long-standing hypertension. Early studies had recognized the favourable effect of PD in controlling hypertension but it was soon realized that such benefit was not sustained. A U shaped trend of hypertension in patients on PD has been recently demonstrated as a result of a steadily increased blood pressure partly attributed to fluid retention resulting from lower sodium removal with time.

View Article and Find Full Text PDF

Background: Fluid and sodium removal is often inadequate in peritoneal dialysis patients with high peritoneal solute transport rate, especially when residual renal function is declining.

Method: We studied the effects of using simultaneous crystalloid (glucose) and colloid (icodextrin) osmotic agents on the peritoneal transport of fluid, sodium, and other solutes during 15-hour single-dwell exchanges using 3.86% glucose, 7.

View Article and Find Full Text PDF

Background: Growing concern over the limited capacity of the peritoneal dialysis (PD) system has revived interest in continuous flow peritoneal dialysis (CFPD), a modality in which continuous circulation of PD fluid is maintained at a high flow rate using two separate catheters or one dual-lumen catheter. The CFPD regimen contrasts the "inflow/outflow" regimen, which requires specific times devoted to filling and draining the peritoneum via a single-lumen catheter. Historical data established CFPD capabilities in providing higher solute clearance and ultrafiltration rate (UFR) using either an open loop system with a single pass of fresh PD fluid, or various external purifications of the spent dialysate.

View Article and Find Full Text PDF

In a randomized, prospective, multicenter study, we compared the safety, efficacy, and metabolic effects of a 7.5% icodextrin solution (Extraneal) with a 2.27% glucose solution for long dwell exchanges in patients undergoing automated peritoneal dialysis.

View Article and Find Full Text PDF

This paper summarizes the basis of prescription for automated peritoneal dialysis (APD) established during a French national conference on APD. Clinical results and literature data show that peritoneal clearances are closely determined by peritoneal permeability and hourly dialysate flow rate, independently of dwell time or number of cycles. With APD, peritoneal creatinine clearance increases according to the hourly dialysate flow rate to a maximum (plateau), then decreases because of the multiplication of the drain-fill times.

View Article and Find Full Text PDF

Different connective tissue diseases were observed in two HLA--and DR--identical sisters. The daughter of one of the index patients and their father exhibited closely related symptoms. With reference to this familial observation the authors discuss the significance of DR3 which is correlated with immunologic disturbances producing multiple clinical and biological manifestations.

View Article and Find Full Text PDF