Serious events in older Ontario residents receiving bowel preparations for outpatient colonoscopy with various comorbidity profiles: a descriptive, population-based study
- PMID: 22803018
- PMCID: PMC3395444
- DOI: 10.1155/2012/238387
Serious events in older Ontario residents receiving bowel preparations for outpatient colonoscopy with various comorbidity profiles: a descriptive, population-based study
Abstract
Background: Polyethylene glycol-based bowel preparations (PEGBPs) and sodium picosulfate (NaPS) are commonly used for bowel cleansing before colonoscopy. Little is known about adverse events associated with these preparations, particularly in older patients or patients with medical comorbidities.
Objective: To characterize the incidence of serious events following outpatient colonoscopy in patients using PEGBPs or NaPS.
Methods: The present population-based retrospective cohort study examined data from Ontario health care databases between April 1, 2005 and December 31, 2007, including patients >=66 years of age who received either PEGBP or NaPS for an outpatient colonoscopy. Patients with cardiac or renal disease, long-term care residents or patients receiving concurrent diuretic therapy were identified as high risk for adverse events. The primary outcome was a serious event (SE) defined as a composite of nonelective hospitalization, emergency department visit or death within seven days of the colonoscopy.
Results: Of the 50,660 outpatients >=66 years of age who underwent a colonoscopy, SEs were observed in 675 (2.4%) and 543 (2.4%) patients in the PEGBP and NaPS groups, respectively. Among high-risk patients (n=30,168), SEs occurred in 481 (2.8%) and 367 (2.8%) of patients receiving PEGBP and NaPS, respectively.
Conclusions: The SE rate within seven days of outpatient colonoscopy was 24 per 1000 procedures, and among high-risk patients was 28 per 1000 procedures. The rates were similar for PEGBP and NaPS. Clinicians should be aware of the risks associated with colonoscopy in older patients with comorbidities.
HISTORIQUE :: Les préparations intestinales à base de polyéthylène glycol (PBPÉG) et de picosulfate sodique (PSNa) sont souvent utilisées pour l’irrigation intestinale avant une coloscopie. On ne sait pas grandchose des effets indésirables de ces préparations, notamment chez les patients âgés présentant des comorbidités.
OBJECTIF :: Caractériser l’incidence d’événements graves (ÉG) après une coloscopie sans hospitalisation chez des patients qui utilisent des PBPÉG ou du PSNa.
MÉTHODOLOGIE :: La présente étude de cohorte rétrospective en population portait sur des données tirées de bases de données ontariennes sur les soins de santé entre le 1er avril 2005 et le 31 décembre 2007, incluant les patients de 66 ans ou plus qui avaient pris soit une PBPÉG, soit du PSNa en vue d’une coloscopie sans hospitalisation. Les patients atteints d’une maladie cardiaque ou rénale, les patients en soins de longue durée et ceux qui recevaient un traitement diurétique concomitant étaient considérés comme très vulnérables à des effets indésirables. Des ÉG, définis comme un ensemble composite d’hospitalisation urgente, de consultation à l’urgence ou de décès dans les sept jours suivant la coloscopie, constituaient la mesure de résultats primaire.
RÉSULTATS :: On a observé des ÉG chez 675 (2,4 %) et 543 (2,4 %) des 50 660 patients ambulatoires de 66 ans ou plus qui ont subi une coloscopie et avaient pris du PBPÉG ou du PSNa, respectivement, ainsi que chez 481 (2,8 %) et 367 (2,8 %) des patients très vulnérables (n=30 168) qui avaient pris du PBPÉG ou du PSNa, respectivement
CONCLUSIONS :: Le taux d’ÉG dans les sept jours suivant la coloscopie sans hospitalisation correspondait à 24 cas pour 1 000 interventions, et chez les patients très vulnérables, à 28 cas pour 1 000 interventions. Les taux étaient similaires avec l’utilisation de PBPÉG ou de PSNa. Les cliniciens devraient connaître les risques liés à la coloscopie chez les patients âgés qui présentent des comorbidités.
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