sofie gevaert - european society of cardiology · acute kidney injury kdigo definition of aki...
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Sofie Gevaert
Ghent University Hospital, Belgium
Cardiorenal syndrome
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Consultancy• Astra Zeneca• Boegringer• MSD• Novartis
Disclosures
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• ICMP, ejection fraction 35 %: progressive dyspnea, NYHA IVLisinopril 10mg, Spironolacone 25mg, Cardvedilol 12.5mg BID, Bumetanide 2.5mg
• 115/85 mmHg, 90 bpm ,JVP >10, HJR+, peripheral edema• Serum creatinin 1.7mg/dL, Na+ 128 • Echocardiography :
– Restrictive filling pattern– Ascites and pleural effusions.
• Treatment: IV nitrates & IV diuretics– Day 1: Fluid balance = -3.5L/24h– Day 2: UO: 0.4 mL/kg/h for 8 hours
Scr: 1.8 2.5 mg/dL but still volume overloaded
68 y old man, ADHF
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Acute Kidney Injury
KDIGO definition of AKI
Increase in Scr level of ≥ 0.3 mg/dL (26.5 μmol/L)
<48h
Increase in Scr level of ≥ 1.5 times baseline <7 d
Urine output <0.5mL/Kg/h >6h
KDIGO is modification of RIFLE and AKINKDIGO, Kidney Int 2012
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Staging of AKI
KDIGO staging of AKI
Stage Scr increase Urine output
1≥1.5-1.9 times baseline
or ≥ 0.3mg/dL
<0.5mL/kg/h for 6-12h
2 ≥2.0-2.9 times baseline <0.5mL/kg/h for ≥ 12h
3
≥3times baseline or
≥ 4mg/dLor
RRT
<0.3mL/kg/h for ≥ 24hor
Anuria for ≥ 12h
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OR
P<0.001
P<0.001
P<0.001
Roy et al., Cardiorenal Med 2013
AKI predicts outcome death, rehosp., dialysis
OR 30d
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– CRS type 1: acute cardiorenal
– CRS type 2: chronic cardiorenal
– CRS type 3: acute renocardiac
– CRS type 4: chronic renocardiac
– CRS type 5: secondary cardiorenal syndrome
“Disorder of the heart and kidneys whereby acute or chronic dysfunction in one organ may induce acute or chronic
dysfynction of the other”
Ronco et al., JACC 2008
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Incidence of CRS type 1
Meta-analysis, Vandenberghe et al., submitted 2015
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• Pre-existing CKD (30-40%)• Diabetes• Hypertension• High dose diuretics• Iodinated contrast• Age• Anaemia
Patients at risk
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CRS in ADHF
Gottlieb et al., J cardiac Failure 2002
Heart Failure, N=1,002
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Damman et al., J Card Fail 2007
WRF= >0.2mg/dL increase
WRF and all cause mortality in AHF
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But…Agressive decongestion, even with WRF can improve post-discharge survival
Admission to discharge change in GFR
Testani et al., Circulation 2010
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WRF/No congNo WRF/cong
1y mort./ TX/HF rehosp.
Metra et al., Circulation heart Fail 2012
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Detoxification: glomeruli: GFR
Volume homeostatis: tubules
Neuro-endocrine function
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Volume statusRenal perfusionBPCVPIAPNeurohormonal activation
Verbrugge et al., CardioRenal Med 2014
Cockroft and GouldMDRD
CKD-EPI
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Sympathetic nervous system Renal vasoconstriction
Increased venous pressure
IntrarenalAdenosine release
Forward flow
Venous congestion
RAAS
Diuretics
Na+ retention
Immunological factorsHormonal factors
AnaemiaInflammation
Oxidative stressEndotelial dysfunction
GFRInterst. fibrosis
Tubular damageNephron lossRenal hypoperfusion
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Mullens et al., JACC 2009
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Managment CRS 1: Volume assessment
Chaudhry et al, Circulation 2007
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Fallick et al, Circ Heart Fail 2011
Cave too big/rapid decongestion
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Managment CRS 1: Congestion
Interstitium
Transcellular water flux
Intravascular refill
Vascular space
Osmolality
28L
10.5L
3.5 LDiureticsUltrafiltration?
How much, how fast?
ParacentesisCompression
Starling forcesCardiovascular condition
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• Goal: normovolaemia• Loop diuretics: tailored, assessment volume status• Agressive treatment of volume overload
but
• Avoid hypotension and underfillingMAP≥65mmHG, or higher in chronic hypertensives
• Intermittent vs. Continuous? • Monitor weight, Urine output
Diuretics
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Felker et al, NEJM 2011
N=308
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• Paracentesis of ascites Intra-abdominal pressure GFR
• Compression therapy of lower extremitiesLymphatic drainageInterstitial Fluid Systemic circulation
Removal Fluid 3rd space
Mullens et al, J Card Fail 2008
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• Afterload: Vasodilators, if MAP >65mmHG
• Contractility: Inotropes• Mechanical support
Managment of CRS 1: Effective circulatory volume
Mebazaa et al, Intensive Care Med 2011
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Managment of CRS 1: Improvement renal perfusion
Massie et al., NEJM 2010
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Chen et al, JAMA 2013
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Metra et al., JACC 2013
?
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Managment of CRS 1: Diuretic Resistance:
-Increase Loop diuretics-Combine
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Ultrafiltration
Bart et al., NEJM 2012
UNLOAD: ADHF and volume overloadN=200
CARESS: ADHF –WRF-persist. Cong.N=188
-200mL/h
Greater Fluid loss
Costanzo et al., JACC 2007
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Hypertonic saline?
Paterna et al., Am J Med Sci 2011
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• Dobutamine 4 μg/kg/min, interrupt β-blocker• Diuresis , Fluid balance -5L/3days• Serum creatinin 2.5mg/dL 1.5 mg/dL• Na+ 128 138 • Salt and fluid restriction
68 y old man, ADHF
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• CRS 1 : up to 50 % of your ADHF patients• Complex pathofysiology:
– Venous congestion– Low output– Neurohormonal activation
• DECONGESTION– Agressive Diuretics-Transient GFR-Avoid hypotension-3rd space
• Combination• Ultrafiltration
• Increase effective circulatory volume• Vasodilator• Inotropes-mechanical support
• Improvement of renal perfusion?
Conclusions
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