Phosphorus and Calcium Removal During Long Hemodialysis Treatment Sessions
The purpose of this sudy is to determined the effect of dialysate volume and treatment time on phosphate and calcium removal in stage V chronickidney disease patients treated by hemodialysis using the System One (NxStage Medical, Lawrence, MA)
Ten patients will be recruited from those routinely treated in-center or at home using the Systerm One at the clinical centers. Each patient will be studiesd on 4 separate occastions. Treatments under the following conditions will each be performed on each study patient, at least one week apart:
1. Treatment for 8 hrs uding 40L of dialysate
2. Treatment for 8 hrs using 60L of dialysate
3. Treatment for 5 hrs using 40L of dialysate
4. Treatment for 5 hrs using 60L of dialysate
Blood samples will be collected and assayed for the concentrations of urea, phosphate, calcium, bicarbonate, beta-2-microglobulin and albumin using standard assays.
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
NxStage System One (NxStage Medical, Lawrence, MA)
Not yet recruiting
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00633308
- Information obtained from ClinicalTrials.gov on July 15, 2010
Medical and Biotech [MESH] Definitions
A severe irreversible decline in the ability of kidneys to remove wastes, concentrate URINE, and maintain ELECTROLYTE BALANCE; BLOOD PRESSURE; and CALCIUM metabolism. Renal failure, either acute (KIDNEY FAILURE, ACUTE) or chronic (KIDNEY FAILURE, CHRONIC), requires HEMODIALYSIS.
Kidney Papillary Necrosis
A complication of kidney diseases characterized by cell death involving KIDNEY PAPILLA in the KIDNEY MEDULLA. Damages to this area may hinder the kidney to concentrate urine resulting in POLYURIA. Sloughed off necrotic tissue may block KIDNEY PELVIS or URETER. Necrosis of multiple renal papillae can lead to KIDNEY FAILURE.
Kidney Failure, Chronic
The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.
Kidney Tubular Necrosis, Acute
Acute kidney failure resulting from destruction of EPITHELIAL CELLS of the KIDNEY TUBULES. It is commonly attributed to exposure to toxic agents or renal ISCHEMIA following severe TRAUMA.
Renal Insufficiency, Chronic
Conditions in which the KIDNEYS perform below the normal level for more than three months. Chronic kidney insufficiency is classified by five stages according to the decline in GLOMERULAR FILTRATION RATE and the degree of kidney damage (as measured by the level of PROTEINURIA). The most severe form is the end-stage renal disease (CHRONIC KIDNEY FAILURE). (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002)
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