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      Peritoneal dialysis-related peritonitis: twenty-seven years of experience in a Colombian medical center Translated title: Peritonitis asociada a la diálisis peritoneal, 27 años de experiencia en un único centro, Medellín, Colombia

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          Abstract

          Peritonitis has been the most common complication of continues ambulatory peritoneal dialysis (CAPD) since it was first implemented, and it remains the leading cause of treatment failure and transfer to other renal replacement therapies. This study presents a Colombian series with a total of 2,469 episodes of peritonitis in 914 patients from a cohort of 1,497 patients on PD, who were followed for almost three decades at a single center. This is the largest Latin American series of patients with PD-related peritonitis. Objective: To describe the CAPD-related peritonitis in a cohort of patients followed for 27 years at a single center, and compare the results with those observed elsewhere in the world. Study Design: Prospective study of incident patients on CAPD from March 1981 to December 2008. Results: In our center, the rate of peritonitis has been steady between 0.8 and 0.9 since 1981 and no significant changes have been noticed in the 27 years of follow up. The rate remains similar to that described nowadays by other large dialysis centers in the world, which have reported significant improvements in recent decades. No significant differences were found in the isolates of gram-positive and gram-negative microorganisms or fungi with respect to those reported by other large series, or in the frequency of culture-negative peritonitis. Conclusion: This study presents the largest Latin American series of patients with CAPD-related peritonitis with a total of 2,469 patients. In this study, the rate of CAPD-related peritonitis remained almost the same during the three decades of observation despite having used three different CAPD systems. Our hypothesis is that the socio-economic conditions of the patients admitted for peritoneal dialysis influences the rate of peritonitis.

          Translated abstract

          Desde que se implementó por primera vez, la peritonitis ha sido la complicación más común de la diálisis peritoneal ambulatoria continua (DPAC) y sigue siendo la causa principal del fracaso del tratamiento y del cambio a otros tratamientos renales sustitutivos. En este estudio se presenta una serie colombiana de un total de 2469 episodios de peritonitis en 914 pacientes de una cohorte de 1497 pacientes en diálisis peritoneal (DP), que fueron sometidos a seguimiento durante casi tres décadas en un único centro. Se trata de la mayor serie de Latinoamérica de pacientes con peritonitis asociada con DP. Objetivo: Describir la peritonitis asociada con la DPAC en una cohorte de pacientes sometidos a seguimiento durante 27 años en un único centro y comparar los resultados con los observados en otras partes del mundo. Diseño del estudio: Estudio prospectivo de pacientes incidentes de DPAC desde marzo de 1981 hasta diciembre de 2008. Resultados: En nuestro centro, la tasa de peritonitis ha permanecido estable entre 0,8 y 0,9 desde 1981 y no se han observado cambios significativos en los 27 años de seguimiento. La tasa es similar a la descrita actualmente por otros grandes centros de diálisis del mundo, que han registrado importantes mejoras en las últimas décadas. No se detectaron diferencias significativas en las muestras aisladas de microorganismos gram positivos o gram negativos u hongos en lo que respecta a los registrados en otras grandes series ni en la frecuencia de peritonitis con cultivo negativo. Conclusión: En este estudio se presenta la mayor serie de Latinoamérica de pacientes con peritonitis asociada con DPAC con un total de 2469 pacientes. La tasa de peritonitis asociada con DPAC permaneció prácticamente inalterable durante las tres décadas de observación, a pesar de haber utilizado tres sistemas diferentes de DPAC. Nuestra hipótesis es que las condiciones socioeconómicas de los pacientes ingresados para diálisis peritoneal influyen en la tasa de peritonitis.

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          Most cited references79

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          Peritonitis influences mortality in peritoneal dialysis patients.

          Mortality remains high in peritoneal dialysis (PD) patients. Known risk factors for mortality include age, diabetes, race, initial albumin level, and cardiovascular disease. Peritonitis is reported to cause death in 1 to 6% of PD patients but has not been well studied as a risk factor for mortality. This study examined 516 adults with a total of 896 yr on PD at one center to determine if peritonitis influenced mortality. Time at risk began on Day 1 of training and ended at death, transplant, or 60 days after transfer to hemodialysis or intermittent peritoneal dialysis. The overall mortality rate was 17.4/100 patient yr. Survival was lower for whites, men, diabetic patients, and older patients. Independent risk factors for mortality (by Cox proportional hazards) were race, diabetes, increased age, and increased peritonitis rate. Use of the Y-set was not associated with decreased mortality. Peritonitis was a risk factor only in whites, nondiabetic patients, and those patients over the age of 60. For every 0.5/yr increase in the peritonitis rate, the risk of death increased 10% in whites, 11% in those patients who were over the age of 60, and 4% for nondiabetic patients. Mortality rates did not decrease over time (1979 to 1995), although peritonitis rates fell significantly (P < 0.001). Rates of Gram-negative and fungal peritonitis showed no trend over time. Peritonitis contributed to 25 of 158 (15.8%) of deaths. Gram-negative/fungal peritonitis accounted for 14 deaths (9.5% of all Gram-negative/fungal episodes) whereas Staphylococcus epidermidis accounted for only 1 death (0.5% of all S. epidermidis episodes) (P < 0.001). Cardiovascular disease was more common in those patients whose deaths were unrelated to peritonitis (P < 0.01), whereas an infectious cause was more common in those patients whose deaths were peritonitis-related (P < 0.001). In this study, peritonitis was a risk factor for death in whites, nondiabetic patients, and older patients. However, the Y-set did not improve survival, perhaps because it does not decrease Gram-negative/fungal peritonitis. To have an impact on survival, efforts are needed to reduce the peritonitis that results from these more serious pathogens.
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            A comparison of peritonitis rates from the United States Renal Data System database: CAPD versus continuous cycling peritoneal dialysis patients.

            Previous comparisons of peritonitis rates between continuous ambulatory peritoneal dialysis (CAPD) and continuous cycling peritoneal dialysis (CCPD) have produced varying results. Using United States Renal Data System data, the authors evaluated peritonitis rates in 1994 through 1997 incident CAPD (n = 9,190) and CCPD (n = 2,785) Medicare patients. Patients were characterized during a 6-month entry period (months 4 through 9) and followed for a maximum of 2 years (months 10 through 33). Medicare claims data provided the date of the first peritonitis episode during the follow-up period. The time to first peritonitis after 9 months of PD was compared by the log-rank test, and then by Cox regression with adjustment for peritoneal dialysis modality, age, sex, race, primary end-stage renal disease (ESRD) diagnosis, number of entry-period hospital days, peritonitis during the entry period, hematocrit value, and congestive heart failure. For CAPD and CCPD, the adjusted average months to first peritonitis after 9 months of PD were 17.1 and 16.1, respectively. The probabilities of remaining without a peritonitis episode after 1 year of follow-up were 0.53 and 0.50, respectively ( P = 0.008). The risk of peritonitis was lower for CAPD than for CCPD (relative risk, 0.939; 95% confidence interval, 0.883 to 0.998). Other significant risk factors included age or=36% had lower risk of peritonitis. Compared with CCPD, CAPD is associated with a slightly but significantly lower risk for development of a first peritonitis episode after 9 months of peritoneal dialysis therapy.
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              Geographic and educational factors and risk of the first peritonitis episode in Brazilian Peritoneal Dialysis study (BRAZPD) patients.

              Peritonitis remains as the most frequent cause of peritoneal dialysis (PD) failure, impairing patient's outcome. No large multicenter study has addressed socioeconomic, educational, and geographic issues as peritonitis risk factors in countries with a large geographic area and diverse socioeconomic conditions, such as Brazil. Incident PD patients recruited from 114 dialysis centers and reporting to BRAZPD, a multicenter observational study, from December 2004 through October 2007 were included. Clinical, dialysis-related, demographic, and socioeconomic variables were analyzed. Patients were followed up until their first peritonitis. Cox proportional model was used to determine independent factors associated with peritonitis. In a cumulative follow-up of 2032 patients during 22.026 patient-months, 474 (23.3%) presented a first peritonitis episode. In contrast to earlier findings, PD modality, previous hemodialysis, diabetes, gender, age, and family income were not risk predictors. Factors independently associated with increased hazard risk were lower educational level, non-white race, region where patients live, shorter distance from dialysis center, and lower number of patients per center. Educational level and geographic factors as well as race and center size are associated with risk for the first peritonitis, independent of socioeconomic status, PD modality, and comorbidities.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                nefrologia
                Nefrología (Madrid)
                Nefrología (Madr.)
                Sociedad Española de Nefrología (Cantabria, Santander, Spain )
                0211-6995
                1989-2284
                2014
                : 34
                : 1
                : 88-95
                Affiliations
                [02] Medellín orgnameHospital San Vicente de Paúl orgdiv1Servicio de Medicina Interna Colombia
                [04] Medellín orgnameUniversidad de Antioquia Colombia
                [01] Medellín orgnameHospital Pablo Tobón Uribe orgdiv1Servicio de Nefrología Colombia
                [03] orgnameHospital San Vicente de Paúl orgdiv1Servicio de Nefrología
                Article
                S0211-69952014000100011
                10.3265/Nefrologia.pre2013.Nov.12002
                3de34b36-6dd8-4916-8bfc-aca4f297e3a8

                This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 International License.

                History
                : 11 November 2013
                : 07 March 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 52, Pages: 8
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                SciELO Spain


                Diálisis peritoneal,Peritonitis,Colombia,Latinoamérica,Peritoneal dialysis,Latin America

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