Mini-peritoneal equilibration test: A simple and fast method to assess free water and small solute transport across the peritoneal membrane

Mini-peritoneal equilibration test: A simple and fast method to assess free water and small solute transport across the peritoneal membrane. Loss of ultrafiltration (UF) of peritoneal membrane is one of the most important causes of peritoneal dialysis failure. UF is determined by osmotic forces acti...

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Veröffentlicht in:Kidney international 2005-08, Vol.68 (2), p.840-846
Hauptverfasser: La Milia, Vincenzo, Di Filippo, Salvatore, Crepaldi, Monica, Del Vecchio, Lucia, Dell'Oro, Cesare, Andrulli, Simeone, Locatelli, Francesco
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container_issue 2
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container_title Kidney international
container_volume 68
creator La Milia, Vincenzo
Di Filippo, Salvatore
Crepaldi, Monica
Del Vecchio, Lucia
Dell'Oro, Cesare
Andrulli, Simeone
Locatelli, Francesco
description Mini-peritoneal equilibration test: A simple and fast method to assess free water and small solute transport across the peritoneal membrane. Loss of ultrafiltration (UF) of peritoneal membrane is one of the most important causes of peritoneal dialysis failure. UF is determined by osmotic forces acting mainly across small pores (UFSP) and ultrasmall pores or free water transport. At present, only semiquantitative estimates or complicated computer simulations are available to assess free water transport. The aim of this study was to assess free water transport during a 3.86% peritoneal equilibration test lasting 1 hour. In this condition, sodium transport is mainly due to convection, allowing the estimate of ultrafiltration of small pores and then of free water transport (total UF - UFSP). In 52 peritoneal dialysis patients we performed a 3.86% peritoneal equilibration test (4 hours) and a 3.86% mini-peritoneal equilibration test (1 hour) and compared UF and small solute transports obtained with the two methods. During the 3.86% mini-peritoneal equilibration test, UFSP and free water transport were 279 ± 142mL and 215 ± 86mL , respectively; free water transport well correlated to total UF during the 3.86% peritoneal equilibration test (r = 0.67). The groups of peritoneal transporters, categorized according to glucose dialysate ratio (D/D0) and to creatinine/plasma ratio (D/PCreat), were in good agreement for the two peritoneal equilibration tests (weighted κ 0.62 and 0.61, respectively). The 3.86% mini-peritoneal equilibration test is a simple and fast method to assess free water transport. It also gives information about total UF and small solute transports and it is in good agreement with the 3.86% peritoneal equilibration test.
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Loss of ultrafiltration (UF) of peritoneal membrane is one of the most important causes of peritoneal dialysis failure. UF is determined by osmotic forces acting mainly across small pores (UFSP) and ultrasmall pores or free water transport. At present, only semiquantitative estimates or complicated computer simulations are available to assess free water transport. The aim of this study was to assess free water transport during a 3.86% peritoneal equilibration test lasting 1 hour. In this condition, sodium transport is mainly due to convection, allowing the estimate of ultrafiltration of small pores and then of free water transport (total UF - UFSP). In 52 peritoneal dialysis patients we performed a 3.86% peritoneal equilibration test (4 hours) and a 3.86% mini-peritoneal equilibration test (1 hour) and compared UF and small solute transports obtained with the two methods. During the 3.86% mini-peritoneal equilibration test, UFSP and free water transport were 279 ± 142mL and 215 ± 86mL , respectively; free water transport well correlated to total UF during the 3.86% peritoneal equilibration test (r = 0.67). The groups of peritoneal transporters, categorized according to glucose dialysate ratio (D/D0) and to creatinine/plasma ratio (D/PCreat), were in good agreement for the two peritoneal equilibration tests (weighted κ 0.62 and 0.61, respectively). The 3.86% mini-peritoneal equilibration test is a simple and fast method to assess free water transport. It also gives information about total UF and small solute transports and it is in good agreement with the 3.86% peritoneal equilibration test.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><pmid>16014064</pmid><doi>10.1111/j.1523-1755.2005.00465.x</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects Adult
Aged
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
aquaporin
Biological and medical sciences
Dialysis Solutions - pharmacokinetics
Emergency and intensive care: renal failure. Dialysis management
Female
free water transport
Humans
Intensive care medicine
Kidney Failure, Chronic - diagnosis
Kidney Failure, Chronic - metabolism
Kidney Failure, Chronic - therapy
Male
Medical sciences
Middle Aged
Models, Biological
Nephrology. Urinary tract diseases
Osmotic Pressure
Peritoneal Dialysis
peritoneal equilibration test
peritoneal transport
Peritoneum - metabolism
Water - metabolism
title Mini-peritoneal equilibration test: A simple and fast method to assess free water and small solute transport across the peritoneal membrane
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