‘modern’ fluid therapy · 2014-11-17 · safe trips 390 icus in 24 countries 1955 patients...
TRANSCRIPT
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‘Modern’ fluid therapy
University of Copenhagen
Anders Perner Dept of Intensive Care, Rigshospitalet, University of Copenhagen Scandinavian Critical Care Trials Group www.ssai.info/research/SCCTG Intensive Care Medicine www.icmjournal.esicm.org Research funds from Fresenius Kabi, CSL Behring
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....fluid therapy
• Why do we give fluids?
• Have we got it right?
• When should we give fluids?
• How much should we give?
• What should we give?
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Why do we give fluids? FRANK-STARLING
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SAFE TRIPS 390 ICUs in 24 countries 1955 patients requiring resuscitation fluid on a single day
Finfer et al. Critical Care 2010, 14:R185
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What triggered a fluid bolus in ICU?
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Indications for fluid bolus in ICU
• Low MAP / increasing pressor 50%
• Low urinary output
• Poor peripheral perfusion / lactate
• Tachycardia
• Objective loss 20%
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Have we got it right?
• Low MAP / increasing pressor + (?)
• Low urinary output + (??)
• Poor peripheral perfusion / lactate +
• Tachycardia ?
• Objective loss ++
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Effect of fluid in ICU studies
Marik et al. CCM 2009
• 50% of fluid boluses increase CO
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Venous return function
Perner & De Backer, ICM 2014
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Perner & De Backer, ICM 2014
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Perner & De Backer, ICM 2014
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Perner & De Backer, ICM 2014
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Perner & De Backer, ICM 2014
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• Fluid vs noradrenalin
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• How much fluid should we give?
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Rivers, E et. al. NEJM 2001;345:1368-77
Early Goal-Directed Therapy in sepsis
More……… Fluids early Inotropes RBCs Marked improvement in survival ...in a 240 patient single centre trial
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Protocols
EGDT Protocolled standard care Usual care
vs vs No
protocol
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Interventions Fluids Vasoactives & RBCs
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Interventions Fluids Vasoactives & RBCs
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Longterm mortality
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Protocolized vs. usual care in PROCESS and ARISE resulted in
• More fluids
• More vasopressors
• More inotropes
• More RBCs
• Similar outcomes
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When should we give fluids?
• Initial shock therapy
• Objective volume loss
• Hypoperfusion and low CO
• Hypoperfusion and normal / high CO??
• Dehydration, low fluid intake < 1.5 l, forced diuresis (myoglobinemia, drugs)
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Why bother?
• Positive fluid balance associated to increased mortality
• Fluid restriction and diuresis reduce time on mechanical ventilation
• Hypernatremia clinically problematic and associated to increased mortality
• Highly significant (P<0.0001) variation in fluid volumes among sites in 6S
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• What should we give?
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Fluid purchase in the Capital Region, DK
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Colloids vs crystalloids
AAS 2014, online Nov. 4th
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Ratio
SAFE NaCl vs 4% albumin n=7000 1.4
CHEST NaCl vs 6% HES130 n=7000 1.2
6S trial Ringer vs 6% HES130 n= 800 1.1
CRYSTMAS NaCl vs 6% HES130 n= 196 1.0
Crystalloid to colloid volume ratio in blinded trials
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Increasing use albumin
Is it worth the cost?
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J Myburgh et al NEJM 2007
Increased mortality with 4% albumin in TBI
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CCM 2013;41:580
ICM 2013;39:165
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Relative risk of all-cause mortality in patients with sepsis
randomised to albumin vs crystalloid
Patel A et al. BMJ 2014;349:bmj.g4561
©2014 by British Medical Journal Publishing Group
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Albumin
An expensive and limited resource without apparent benefit
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No fluids match plasma water
which crystalloid?
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No fluids match plasma water
NaCl - hyperchloraemic acidose
Ringer’s solutions - hypotonic
- lactataemia
- acetate/gluconate/malate?
which crystalloid?
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Fluid purchase in the Capital Region, DK
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Fluid purchase in the Capital Region, DK
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• Before-and-after-study in a single ICU in Melbourne
• Patients: All ICU patients
• Intervention: restriction of chlorid-containing fluids
• Outcome: AKI, RRT
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2008 vs 2009
Saline 3.2 l/pt vs 0.1 l/pt
Gelatin 0.7 l/pt vs 0.0 l/pt
4% albumin 0.4 l/pt vs 0.1 l/pt
Ringers lactate 0.6 l/pt vs 4.1 l/pt
20% albumin 0.1 l/pt vs 0.4 l/pt
Chlorid restriction
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AKI
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RRT
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Modern fluid therapy? Fluids have effects related to CO Fluids have side-effects related to volume and content
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???............. Higher vs lower volume NaCl vs Ringer Lactate vs acetate Na, Cl restriction Albumin in ARDS, burn and very low p-albumin (<15 g/l)
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Lemvig Folkeblad 5/7-12
6S TRIAL