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      Peritoneal Dialysis in Patients with Primary Cardiac Failure Complicated by Renal Failure

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          Abstract

          Background/Aims: Clinical outcome in cardiorenal syndrome type II and treated with peritoneal dialysis (PD). Methods: Retrospective analysis over a period of 10 years. Results: Twenty-four patients with mean age at start of dialysis of 67 ± 10 years had mean survival on dialysis of 1.03 ± 0.84 years (median survival 1.0 year). The number of hospitalizations for cardiovascular causes were reduced (13.7 ± 26.5 predialysis vs. 3.5 ± 8.8 days/patient/month postdialysis, p = 0.001). Patients who survived longer than the median survival time (n = 12) also had a reduced number of hospitalizations for all causes (3.7 ± 3.8 predialysis vs. 1.4 ± 2.1 days/patient/month postdialysis, p = 0.041), a lower age (62 ± 10 vs. 71 ± 8 years, p = 0.013) and fewer had diabetes (2 vs. 7 patients, p = 0.039), but left ventricular ejection fraction was not different. Conclusion: After starting PD for cardiorenal syndrome, hospitalizations for cardiovascular causes were reduced for all patients. Survival after starting PD is highly variable. Age and diabetes seem to be significant prognostic factors, but not left ventricular ejection fraction.

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          Effect of icodextrin on volume status, blood pressure and echocardiographic parameters: a randomized study.

          Overhydration is a risk factor for hypertension and left ventricular hypertrophy in peritoneal dialysis patients. Recently, a high prevalence of subclinical overhydration was observed in peritoneal dialysis patients. Aim of the present open-label randomized study was to assess the effect of a icodextrin 7.5% solution on fluid status [extracellular water (ECW) bromide dilution], blood pressure regulation (24-hour ambulatory measurements) and echocardiographic parameters during a study period of 4 months, and to relate the effect to peritoneal membrane characteristics (dialysate/plasma creatinine ratio). Forty peritoneal dialysis patients (22 treated with icodextrin, 18 controls) were randomized to either treatment with icodextrin during the long dwell or standard glucose solutions. Thirty-two patients (19 treated with icodextrin, 13 controls] completed the study. The use of icodextrin resulted in a significant increase in daily ultrafiltration volume (744 +/- 767 mL vs. 1670 +/- 1038 mL; P = 0.012) and a decrease in ECW (17.5 +/- 5.2 L vs. 15.8 +/- 3.8 L; P = 0.035). Also the change in ECW between controls and patients treated with icodextrin was significant (-1.7 +/- 3.3 L vs. +0.9 +/- 2.2 L; P = 0.013). The effect of icodextrin on ECW was not related to peritoneal membrane characteristics, but significantly related to the fluid state of the patients (ECW:height) (r = -0.72; P < 0.0001). Left ventricular mass (LVM) decreased significantly in the icodextrin-treated group (241 +/- 53 grams vs. 228 +/- 42 grams; P = 0.03), but not in the control group. In this randomized open-label study, the use of icodextrin resulted in a significant reduction in ECW and LVM. The effect of icodextrin on ECW was not related to peritoneal membrane characteristics, but was related to the initial fluid state of the patient.
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            The Cardiorenal Syndrome

            The term ‘cardiorenal syndrome’ (CRS) has increasingly been used in recent years without a constant meaning and a well-accepted definition. To include the vast array of interrelated derangements, and to stress the bidirectional nature of the heart-kidney interactions, the classification of the CRS today includes 5 subtypes whose etymology reflects the primary and secondary pathology, the time frame and simultaneous cardiac and renal codysfunction secondary to systemic disease. The CRS can generally be defined as a pathophysiological disorder of the heart and kidneys whereby acute or chronic dysfunction in one organ may induce acute or chronic dysfunction in the other organ. Type I CRS reflects an abrupt worsening of cardiac function (e.g. acute cardiogenic shock or decompensated congestive heart failure) leading to acute kidney injury. Type II CRS describes chronic abnormalities in cardiac function (e.g. chronic congestive heart failure) causing progressive and permanent chronic kidney disease. Type III CRS consists in an abrupt worsening of renal function (e.g. acute kidney ischemia or glomerulonephritis) causing acute cardiac disorder (e.g. heart failure, arrhythmia, ischemia). Type IV CRS describes a state of chronic kidney disease (e.g. chronic glomerular disease) contributing to decreased cardiac function, cardiac hypertrophy and/or increased risk of adverse cardiovascular events. Type V CRS reflects a systemic condition (e.g. diabetes mellitus, sepsis) causing both cardiac and renal dysfunction. Biomarkers can help to characterize the subtypes of the CRS and to indicate treatment initiation and effectiveness. The identification of patients and the pathophysiological mechanisms underlying each syndrome subtype will help to understand clinical derangements, to make the rationale for management strategies and to design future clinical trials with accurate selection and stratification of the studied population.
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              Peritoneal dialysis in refractory end-stage congestive heart failure: a challenge facing a no-win situation.

              Current medical therapeutic strategies for refractory congestive heart failure (CHF) in the population of 65 years and older with contraindications for heart transplantation are limited. Peritoneal dialysis applied to CHF patients with or without renal impairment showed clinical functional improvement.
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                Author and article information

                Journal
                BPU
                Blood Purif
                10.1159/issn.0253-5068
                Blood Purification
                S. Karger AG
                0253-5068
                1421-9735
                2010
                September 2010
                15 September 2010
                : 30
                : 2
                : 146-152
                Affiliations
                aDivision of Nephrology, Department of Internal Medicine, and bDepartment of Cardiology, Maastricht University Medical Center+, Maastricht, and cDepartment of Internal Medicine, Catharina Hospital Eindhoven, Eindhoven, The Netherlands
                Article
                321102 Blood Purif 2010;30:146–152
                10.1159/000321102
                20847552
                10f7dfd0-35f0-4c5a-add7-89519de48c17
                © 2010 S. Karger AG, Basel

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                : 22 October 2009
                : 13 April 2010
                Page count
                Figures: 1, Tables: 4, References: 32, Pages: 7
                Categories
                Original Paper

                Cardiovascular Medicine,Nephrology
                Renal failure,Heart failure,Peritoneal dialysis,Hospitalization time

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