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      Extracorporeal ultrafiltration for acute heart failure: patient selection and perspectives

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          Abstract

          Most patients presenting with acute heart failure (AHF) show signs and symptoms of fluid overload, which are closely associated with short-term and long-term outcomes. Ultrafiltration is an extremely appealing strategy for patients with AHF and concomitant overt fluid overload not fully responsive to diuretic therapy. However, although there are several theoretical beneficial effects associated with ultrafiltration, published reports have shown controversial findings. Differences in selection of the study population and in ultrafiltration indications and protocols, and high variability in the pharmacologic therapy used for the control group could explain some of these conflicting results. Here, we aimed to provide an overview on the current medical evidence supporting the use of ultrafiltration in AHF, with a special focus on the identification of potential candidates who may benefit the most from this therapeutic option.

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          Importance of venous congestion for worsening of renal function in advanced decompensated heart failure.

          Wilfried Mullens, Zuheir Abrahams, Gary Francis … (2009)
          To determine whether venous congestion, rather than impairment of cardiac output, is primarily associated with the development of worsening renal function (WRF) in patients with advanced decompensated heart failure (ADHF). Reduced cardiac output is traditionally believed to be the main determinant of WRF in patients with ADHF. A total of 145 consecutive patients admitted with ADHF treated with intensive medical therapy guided by pulmonary artery catheter were studied. We defined WRF as an increase of serum creatinine >/=0.3 mg/dl during hospitalization. In the study cohort (age 57 +/- 14 years, cardiac index 1.9 +/- 0.6 l/min/m(2), left ventricular ejection fraction 20 +/- 8%, serum creatinine 1.7 +/- 0.9 mg/dl), 58 patients (40%) developed WRF. Patients who developed WRF had a greater central venous pressure (CVP) on admission (18 +/- 7 mm Hg vs. 12 +/- 6 mm Hg, p < 0.001) and after intensive medical therapy (11 +/- 8 mm Hg vs. 8 +/- 5 mm Hg, p = 0.04). The development of WRF occurred less frequently in patients who achieved a CVP <8 mm Hg (p = 0.01). Furthermore, the ability of CVP to stratify risk for development of WRF was apparent across the spectrum of systemic blood pressure, pulmonary capillary wedge pressure, cardiac index, and estimated glomerular filtration rates. Venous congestion is the most important hemodynamic factor driving WRF in decompensated patients with advanced heart failure.
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            Worsening renal function and prognosis in heart failure: systematic review and meta-analysis.

            Kevin Damman, Gerjan Navis, Adriaan A. Voors … (2007)
            Renal impairment is associated with increased mortality in heart failure (HF). Recently, reports suggest that worsening renal function (WRF) is another predictor of clinical outcome in HF. The present study was designed to establish the proportion of patients with HF that exhibits (WRF) and the associated risk for mortality and hospitalization by conducting a systematic review and meta-analysis. A systematic search of MEDLINE revealed 8 studies on the relationship between WRF and mortality in 18,634 patients with HF. The mortality risk associated with WRF was estimated using random-effects meta-analysis. WRF was defined as an increase in serum creatinine > or = 0.2 mg/dL or a corresponding decrease in estimated glomerular filtration rate > or = 5 mL x min x 1.73 m2. Subgroup analysis included differentiation between in- and out-hospital patients, degree of WRF and time until end point occurrence. WRF developed in 4,734 (25%) patients and was associated with a higher risk for mortality (odds ratio [OR] = 1.62; 95% confidence interval [CI] 1.45-1.82, P < .001) and hospitalization (OR = 1.30, 95% CI 1.04-1.62, P = .022). The severity of WRF was also associated with greater mortality. Patients with impaired renal function at baseline were more prone to progressive renal function loss. WRF predicts substantially higher rates of mortality and hospitalization in patients with HF.
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              The limited reliability of physical signs for estimating hemodynamics in chronic heart failure.

              Nicola L. Stevenson, Joseph Perloff (1989)
              The cardiovascular physical examination is used commonly as a basis for diagnosis and therapy in chronic heart failure, although the relationship between physical signs, increased ventricular filling pressure, and decreased cardiac output has not been established for this population. We prospectively compared physical signs with hemodynamic measurements in 50 patients with known chronic heart failure (ejection fraction, .18 +/- .06). Rales, edema, and elevated mean jugular venous pressure were absent in 18 of 43 patients with pulmonary capillary wedge pressures greater than or equal to 22 mm Hg, for which the combination of these signs had 58% sensitivity and 100% specificity. Proportional pulse pressure correlated well with cardiac index (r = .82), and when less than 25% pulse pressure had 91% sensitivity and 83% specificity for a cardiac index less than 2.2 L/min/m2. In chronic heart failure, reliance on physical signs for elevated ventricular filling pressure might result in inadequate therapy. Conversely, the adequacy of cardiac output is assessed reliably by pulse pressure. Our results facilitate decisions regarding treatment in chronic heart failure.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Vasc Health Risk Manag
                Journal ID (iso-abbrev): Vasc Health Risk Manag
                Journal ID (publisher-id): Vascular Health and Risk Management
                Title: Vascular Health and Risk Management
                Publisher: Dove Medical Press
                ISSN (Print): 1176-6344
                ISSN (Electronic): 1178-2048
                Publication date Collection: 2017
                Publication date (Electronic): 11 December 2017
                Volume: 13
                Pages: 449-456
                Affiliations
                Intensive Cardiac Care Unit, Centro Cardiologico Monzino, I.R.C.C.S., Milan, Italy
                Author notes
                Correspondence: Giancarlo Marenzi, Centro Cardiologico Monzino, Via Parea 4, 20138 Milan, Italy, Tel +39 02 580021, Fax +39 02 5800 2287, Email giancarlo.marenzi@ 123456ccfm.it
                Article
                Publisher ID: vhrm-13-449
                DOI: 10.2147/VHRM.S128608
                PMC ID: 5730184
                PubMed ID: 29270016
                SO-VID: 8f42c5a5-5ead-4038-82f0-2cac963a1891
                Copyright © © 2017 Milazzo et al. This work is published and licensed by Dove Medical Press Limited
                License:

                The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License ( http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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                Subject: Review

                ScienceOpen disciplines: Cardiovascular Medicine
                Keywords: ultrafiltration,acute heart failure,fluid overload,diuretics
                Data availability:
                ScienceOpen disciplines: Cardiovascular Medicine
                Keywords: ultrafiltration, acute heart failure, fluid overload, diuretics

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