HPE Human Albumin Update | Page 19

Human albumin : ICU
Severe sepsis or septic shock After the post hoc analysis on the pre-defined subgroup of patients with severe sepsis enrolled in the SAFE study , many investigators have focused their attention on the potential benefit of human albumin in severe sepsis or septic shock . 19 At the moment , there are at least four different large RCTs ( either completed , planned or ongoing ), which aim at evaluating the possible benefit of albumin administration compared with standard crystalloid infusion in this category of patients ( see Table 1 ). The Early Albumin Resuscitation during Septic Shock – NCT00327704 ( EARSS ) and the Albumin Italian Outcome Sepsis trial – NCT00707122 ( ALBIOS ) trials have been recently completed ( although still unpublished ), whereas the PRECISE
trial has undergone only a pilot phase , pending the publication of the findings observed in the two first trial so as to decide how to proceed . 20 In particular , the EARSS trial is a French multicentre , open-label RCT that enrolled 794 patients with early septic shock randomised to receive either 20 % albumin or normal saline for the first three days of fluid resuscitation , at fixed doses ( 100ml every eight hours ). In contrast , the ALBIOS trial is an Italian multicentre , open-label RCT that planned an enrolment of 1800 patients with severe sepsis from 100 Italian ICUs . Patients have been randomised to receive either 20 % albumin and crystalloids or crystalloids alone during the first phase of volume replacement and targeting , during the next 28 days , serum albumin concentration equal to or greater than 30g / l . 3 Similarly to the EARSS study , the PRECISE trial ( Fluid Resuscitation with 5 % albumin versus Normal Saline in Early Septic Shock ), designed as a Canadian multicentre , double-blind RCT , has planned to enrol 1800 patients with early septic shock , who will be randomised to receive either 5 % albumin or normal saline as fluid challenges during volume resuscitation for a maximal period of 90 days . 20 Lastly , the RASP trial ( Lactated Ringer versus Albumin in Early Sepsis Therapy – NCT01337934 ), which is now recruiting patients , is a Brazilian multicentre , double-blind RCT that planned an enrolment of 360 patients with early severe sepsis , randomised to receive either 4 % albumin or ringer lactate for fluid resuscitation . Thus , in the near future , novel findings will have the possibility of clarifying the potential benefits of albumin administration beyond a safe volume effect in case of hypovolaemia in patients with sepsis syndromes . Moreover , these trials , having both similarities and differences , will allow us to better dissect the effects of albumin , in terms of patient characteristics ( severe sepsis versus septic shock ), adequate timing of treatment ( early versus late ), adequate trigger for albumin administration ( volume versus albumin replacement ),
" Human albumin has a crucial role in regulating the homeostasis of the intravascular blood compartment " and adequate concentration of albumin solutions ( 20 % versus 4 – 5 %).
Conclusions There is a strong biological and physiological rationale on which it is reasonable to hypothesise a potential beneficial effect of human albumin administration in the critically ill . At the same time , the available clinical evidence is limited . A key limiting factor is the large heterogeneity characterising the population of critically ill . Therefore , a crucial next step will be to characterise the effects of albumin administration in specific categories of patient . As an example , it is now recommended that human albumin should not be employed in patients with traumatic brain injury ; in contrast , patients with severe sepsis or septic shock may benefit from its use . It is very likely that the upcoming novel findings from recently concluded RCTs will better clarify this issue . l
References 1 . Quinlan GJ , Martin GS , Evans TW . Albumin : biochemical properties and therapeutic potential . Hepatology 2005 ; 41 ( 6 ): 1211 – 9 . 2 . Human albumin administration in critically ill patients : systematic review of randomised controlled trials . Cochrane Injuries Group Albumin Reviewers . BMJ 1998 ; 317 ( 7153 ): 235 – 40 .
3 . Vincent J-L , Navickis R , Wilkes M . Morbidity in hospitalized patients receiving human albumin : a meta-analysis of randomized , controlled trials . Crit Care Med 2004 ; 32:2029 – 38 .
4 . Caironi P , Gattinoni L . The clinical use of albumin : the point of view of a specialist in intensive care . Blood Transfus 2009 ; 7 ( 4 ): 259 – 67 .
5 . Weil MH , Henning RJ , Puri VK . Colloid oncotic pressure : clinical significance . Crit Care Med 1979 ; 7 ( 3 ): 113 – 6 .
6 . King TP . On the sulfhydryl group of human plasma albumin . J Biol Chem 1961 ; 236 : C5 .
7 . Stamler JS et al . Nitric oxide circulates in mammalian plasma primarily as an S-nitroso adduct of serum albumin . Proc Natl Acad Sci USA 1992 ; 89 ( 16 ): 7674 – 7 .
8 . Levick JR , Michel CC . Microvascular fluid exchange and the revised Starling principle . Cardiovasc Res 2010 ; 87 ( 2 ): 198 – 210 .
9 . Perner A et al . Hydroxyethyl starch 130 / 0.42 versus Ringer ' s acetate in severe sepsis . N Engl J Med 2012 ; 367 ( 2 ): 124 – 34 .
10 . Myburgh JA et al . Hydroxyethyl starch or saline for fluid resuscitation in intensive care . N Engl J Med 2012 ; 367 ( 20 ): 1901 – 11 .
11 . Perel P , Roberts I , Ker K . Colloids versus crystalloids for fluid resuscitation in critically ill patients . Cochrane Database Syst Rev 2013 ; 2 : CD000567 .
12 . Finfer S et al . Impact of albumin compared to saline on organ function and mortality of patients with severe sepsis . Intensive Care Med 2011 ; 37 ( 1 ): 86 – 96 .
13 . Dellinger RP et al . Surviving sepsis campaign : international guidelines for management of severe sepsis and septic shock : 2012 . Crit Care Med 2013 ; 41 ( 2 ): 580 – 637 .
14 . Dubois MJ et al . Albumin administration improves organ function in critically ill hypoalbuminemic patients : A prospective , randomized , controlled , pilot study . Crit Care Med 2006 ; 34 ( 10 ): 2536 – 40 .
15 . Finfer S et al . A comparison of albumin and saline for fluid resuscitation in the intensive care unit . N Engl J Med 2004 ; 350 ( 22 ): 2247 – 56 .
16 . Myburgh J et al . Saline or albumin for fluid resuscitation in patients with traumatic brain injury . N Engl J Med 2007 ; 357 ( 9 ): 874 – 84 .
17 . Cooper DJ et al . Albumin resuscitation for traumatic brain injury : is intracranial hypertension the cause of increased mortality ? J Neurotrauma 2013 ; 30 ( 7 ): 512 – 18 .
18 . Van Aken HK et al . Fluid resuscitation in patients with traumatic brain injury : What is a SAFE approach ? Curr Opin Anesthesiol 2012 ; 25 : 563 – 5 .
19 . Delany A et al . The role of albumin as a resuscitation fluid for patients with sepsis : A systematic review and meta-analysis . Crit Care Med 2011 ; 39:386 – 91 .
20 . McIntyre L et al . The PRECISE RCT : evolution of an early septic shock fluid resuscitation trial . Transfus Med Rev 2012 ; 26 ( 4 ): 333 – 41 .
17 www . hospitalpharmacyeurope . com