Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy

Changes in renal function were compared in patients receiving oral sodium phosphate (NaP) for colon cleansing and those receiving large-volume polyethylene glycol (PEG) solution to determine whether oral NaP resulted in frequent renal damage that had gone clinically undetected. From 1995 to 2004, a...

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Main Authors: Ramy Abaskharoun, William Depew, Stephen Vanner
Format: Article
Language:English
Published: Wiley 2007-01-01
Series:Canadian Journal of Gastroenterology
Online Access:http://dx.doi.org/10.1155/2007/630639
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author Ramy Abaskharoun
William Depew
Stephen Vanner
author_facet Ramy Abaskharoun
William Depew
Stephen Vanner
author_sort Ramy Abaskharoun
collection DOAJ
description Changes in renal function were compared in patients receiving oral sodium phosphate (NaP) for colon cleansing and those receiving large-volume polyethylene glycol (PEG) solution to determine whether oral NaP resulted in frequent renal damage that had gone clinically undetected. From 1995 to 2004, a cohort of consecutive patients who had serum creatinine (Cr) drawn immediately before colonoscopy and again after subsequent procedures three months to nine years later (almost 80% of patients between the first and fifth year) were identified. Chronic renal failure (CRF) was defined as an abnormal Cr at repeat measurement or an abnormal Cr clearance as estimated by the Cockroft-Gault equation at the time of repeat Cr measurement. Medications and medical comorbid conditions were recorded. Seven hundred sixty-seven patients (51% female and 49% male; 81% oral NaP and 19% PEG) with normal baseline Cr levels were identified through the endoscopy unit database at the Hotel Dieu Hospital, Queen’s University (Kingston, Ontario). Of these, 55 (7%) developed CRF. Forty-two (6.8%) patients receiving oral NaP developed renal failure compared with 13 patients (8.7%) receiving PEG (Fisher’s exact test; P=0.382), but the magnitude of CRF was small in each group (Cr level lower than 160 μmol/L). Using logistic regression analysis with the choice of preparation, medications and medical comorbid conditions as independent variables, only age and blood pressure were predictive of the development of renal failure (P=0.014 and P=0.001, respectively). Baseline Cr clearance was similiar in both the NaP and PEG groups and the absolute difference after colonoscopy did not differ. The present study concluded that the ingestion of oral NaP for colon cleansing before colonoscopy did not result in frequent renal damage that went clinically undetected.
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spelling doaj-art-4e62e68694de45148b14999496eaa8332025-02-03T01:02:54ZengWileyCanadian Journal of Gastroenterology0835-79002007-01-0121422723110.1155/2007/630639Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before ColonoscopyRamy Abaskharoun0William Depew1Stephen Vanner2GI Diseases Research Unit, Hotel Dieu Hospital, Queen’s University, Kingston, Ontario, CanadaGI Diseases Research Unit, Hotel Dieu Hospital, Queen’s University, Kingston, Ontario, CanadaGI Diseases Research Unit, Hotel Dieu Hospital, Queen’s University, Kingston, Ontario, CanadaChanges in renal function were compared in patients receiving oral sodium phosphate (NaP) for colon cleansing and those receiving large-volume polyethylene glycol (PEG) solution to determine whether oral NaP resulted in frequent renal damage that had gone clinically undetected. From 1995 to 2004, a cohort of consecutive patients who had serum creatinine (Cr) drawn immediately before colonoscopy and again after subsequent procedures three months to nine years later (almost 80% of patients between the first and fifth year) were identified. Chronic renal failure (CRF) was defined as an abnormal Cr at repeat measurement or an abnormal Cr clearance as estimated by the Cockroft-Gault equation at the time of repeat Cr measurement. Medications and medical comorbid conditions were recorded. Seven hundred sixty-seven patients (51% female and 49% male; 81% oral NaP and 19% PEG) with normal baseline Cr levels were identified through the endoscopy unit database at the Hotel Dieu Hospital, Queen’s University (Kingston, Ontario). Of these, 55 (7%) developed CRF. Forty-two (6.8%) patients receiving oral NaP developed renal failure compared with 13 patients (8.7%) receiving PEG (Fisher’s exact test; P=0.382), but the magnitude of CRF was small in each group (Cr level lower than 160 μmol/L). Using logistic regression analysis with the choice of preparation, medications and medical comorbid conditions as independent variables, only age and blood pressure were predictive of the development of renal failure (P=0.014 and P=0.001, respectively). Baseline Cr clearance was similiar in both the NaP and PEG groups and the absolute difference after colonoscopy did not differ. The present study concluded that the ingestion of oral NaP for colon cleansing before colonoscopy did not result in frequent renal damage that went clinically undetected.http://dx.doi.org/10.1155/2007/630639
spellingShingle Ramy Abaskharoun
William Depew
Stephen Vanner
Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy
Canadian Journal of Gastroenterology
title Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy
title_full Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy
title_fullStr Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy
title_full_unstemmed Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy
title_short Changes in Renal Function Following Administration of Oral Sodium Phosphate or Polyethylene Glycol for Colon Cleansing before Colonoscopy
title_sort changes in renal function following administration of oral sodium phosphate or polyethylene glycol for colon cleansing before colonoscopy
url http://dx.doi.org/10.1155/2007/630639
work_keys_str_mv AT ramyabaskharoun changesinrenalfunctionfollowingadministrationoforalsodiumphosphateorpolyethyleneglycolforcoloncleansingbeforecolonoscopy
AT williamdepew changesinrenalfunctionfollowingadministrationoforalsodiumphosphateorpolyethyleneglycolforcoloncleansingbeforecolonoscopy
AT stephenvanner changesinrenalfunctionfollowingadministrationoforalsodiumphosphateorpolyethyleneglycolforcoloncleansingbeforecolonoscopy