Adult

Sepsis / Septic Shock

Guidelines

Singer M, Deutschman C, Seymour C, et al. The third international consensus definitions for sepsis and septic shock (Sepsis-3). JAMA. 2016; 315:801-10. An update of the 2001 definition, Sepsis-3 defines sepsis as “life-threatening organ dysfunction caused by a dysregulated host response to infection”. Sepsis-3 uses the retrospectively validated “qSOFA” score (altered mentation, SBP < 100 mmHg, respiratory rate > 22) to identify patients outside of the ICU for risk of death or prolonged ICU stay. In the ICU they recommend using a SOFA score increase of at least 2 to identify organ dysfunction. They also disavow the much-maligned SIRS criteria as a method for identifying septic patients. Criticism of this update includes over-reliance on qSOFA score, which had not been prospectively validated prior to publication.

PMID: 26903338

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Dellinger RP, Levy MM, Rhodes A, et al. Surviving sepsis campaign: international guidelines for management of severe sepsis and septic shock: 2012. Crit Care Med. 2013;41:580-637.

PMID: 23353941

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Hydrocortisone therapy

Annane D, Sebile V, Charpentier C, et al. Effect of treatment with low doses of hydrocortisone and fludrocortisone on mortality in patients with septic shock. JAMA 2002;288; 862-71. Placebo-controlled RCT of 300 septic patients found the subgroup of patients failing to respond to 250 mcg cosyntropin but receiving 50 mg HC q6 and 50mcg fludrocortisone qd had significantly reduced mortality compared to the non-responders given placebo (53% vs. 63%). No benefit was seen in giving steroid to corticotropin-responsive patients. The statistical methods used in reporting outcomes, as well as the high mortality compared to other trials in septic shock patients, are concerns raised about this study.

PMID: 12186604

Sprung CL, Annane D, Keh D, et al. Hydrocortisone therapy for patients with septic shock. N Engl J Med 2008; 358:111-24. RCT (N = 499) found no 28-day mortality benefit to “physiologic” doses of hydrocortisone administered within 72 hours of sepsis onset, independent of the response to a corticotropin stim test. Difficulty with patient recruitment and lower than expected mortality led to the study having a power of < 35% to detect a 20% reduction in relative risk of death.

PMID: 18184957

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Early resuscitation

Rivers E, Nguyen B, Havstad S, et al. Early goal-directed therapy in the treatment of severe sepsis and septic shock. N Engl J Med 2001; 345:1368-77. This RCT of 263 patients found benefit from early (in E.D.) aggressive resuscitation (in-hospital mortality of 30% in the goal-directed group compared to 46% in the standard therapy group). The intervention arm was noteworthy for prn use of blood transfusion and/or inotropes to maintain central venous O2 sat >70%. Authors speculate the earlier aggressiveness accounts for better outcomes than previous studies of goal-directed hemodynamic optimization.

PMID: 11794169

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Jones AE, Shapiro NI, Trzeciak S, et al. Lactate clearance vs central venous oxygen saturation as goals of early sepsis therapy: a randomized controlled trial. JAMA 2010; 303:739-46. This randomized trial of 300 patients found protocol-driven resuscitation based on lactate clearance to be as effective as resuscitation based on continuous ScVO2 monitoring. Of note, the use of inotropes and red blood cell transfusion was similar between groups and substantially less than in the EGDT study above.

PMID: 20179283

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The following large RCTs found that, compared to early goal-directed therapy, management that does not include continuous central venous O2 monitoring, require central venous pressure monitoring, and entailed less frequent blood transfusions and inotrope use nonetheless produced equivalent outcomes, even without the use of protocolized resuscitation. These results will likely result in modification of future sepsis guidelines.

ProCESS Investigators, Yealy DM, Kellum JA, et al. A randomized trial of protocol-based care for early septic shock. N Engl J Med. 2014; 370:1683-93.

PMID: 24635773

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ARISE Investigators, ANZICS Clinical Trials Group, Peake SL, Delaney A, Bailey M, et al. Goal-directed resuscitation for patients with early septic shock. N Engl J Med. 2014; 371:1496-506.

PMID: 25272316

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Mouncey PR, Osborn TM, Power GS, et al for the ProMISe Trial Investigators. Trial of early, goal-directed resuscitation for septic shock. New Engl J Med 2015; 372: 1301-1311.

PMID: 25776532

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Adjunctive Therapy

Marik PE, Khangoora V, Rivera R et al. Hydrocortisone, vitamin C, and thiamine for the treatment of severe sepsis and septic shock: a retrospective before-after study. Chest. 2017; 151:1229-38. A retrospective, single center study of 47 patients with severe sepsis or septic shock found lower hospital mortality in the treatment group (8.5% vs 40.4%). The results, as well as the limitations in the study design, have created a lot of buzz. Larger RCTs studying this intervention are underway.

PMID: 27940189

Albumin for Fluid Resuscitation

The SAFE Study Investigators. A comparison of albumin and saline for fluid resuscitation in the intensive care unit. N Engl J Med 2004; 350:2247-56. In approximately 7000 unselected ICU patients requiring volume administration—including trauma, sepsis, and most other diagnoses—a randomized, blinded study of albumin versus saline found no difference in the primary outcome of 28-day mortality or in secondary outcomes. However, in a subgroup analysis of approximately 1200 patients with severe sepsis, there was a trend toward decreased mortality in the albumin group (relative risk 0.87, p=0.06).

PMID: 15163774

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Caironi P, Tognoni G, Masson S, et al. Albumin replacement in patients with severe sepsis or septic shock. N Engl J Med. 2014; 370:1412-21. Multicenter open-label RCT randomized 1,818 patients to daily 20% albumin to maintain a serum albumin > 3 gm/dl plus crystalloids vs. crystalloids alone for the duration of their ICU stay and found no difference in mortality. The albumin group had shorter duration of vasopressor support but duration of mechanical ventilation or need for renal replacement therapy did not differ.

PMID: 24635772

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Hemodynamic Monitoring

Connors AF, Speroff T, Dawson NV, et al. The effectiveness of right heart catheterization in the initial care of critically ill patients. JAMA 1996;276:889-897. This famous prospective cohort study found worse outcome with use of PACs in the critically ill, instantly becoming a source of enormous controversy.

PMID: 8782638

Also see “Ultrasound in the ICU”

Vasopressors

Russel JA, Walley KR, Singer J, et al. VASST Investigators. Vasopressin versus norepinephrine infusion in patients with septic shock. N Engl J Med 2008;358:877-87. Large scale randomized blinded study of low dose vasopressin added to norepinephrine versus norepinephrine alone in septic shock. No significant differences in overall mortality or serious adverse events were identified; however post hoc analysis suggested possible 28 and 90 day mortality benefit in a subset of patients with less severe septic shock.

PMID: 18305265

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DeBacker D, Biston P, Devriendt J, et al. SOAP II Investigators. Comparison of dopamine and norepinephrine in the treatment of shock. N Engl J Med. 2010;362:779-89. Large multicenter RCT of 1679 patients with shock of any etiology, demonstrated equal mortality and significantly fewer arrhythmias with norepinephrine as first line vasopressor. Subgroup of those with cardiogenic shock had higher mortality with dopamine. Concerns raised have included heterogeneity of shock physiologies included, restricted fluid resuscitation protocol, and open label use of norepinephrine after conservative max doses of study drug. However, this study adds valuable evidence to our currently limited understanding of comparative merits of pressors.

PMID: 20200382

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Khanna A, English SW, Wang XS, et al. Angiotensin II for the treatment of vasodilatory shock. N Engl J Med. 2017; 377:419-30. Noteworthy for being the basis for recent FDA approval of a new class of vasopressor. ATHOS-3 trial randomized 321 patients with vasodilatory shock receiving > 0.2 μg/kg/min of norepinephrine or comparable dose of another vasopressor to either angiotensin II or placebo. The primary endpoint was increase in mean arterial pressure of 10 mm Hg or attaining MAP of 75 mmHg at 3 hours without increase in baseline pressor. Angiotensin II achieved this endpoint in 69% vs. 23% for placebo (OR 7.95) but had no effect on 28 day mortality.

PMID: 28528561

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***See also Cardiology Critical Care

 

Last Reviewed: May 2018