Intensive Care Medicine

, Volume 41, Issue 8, pp 1393–1401 | Cite as

Endogenous IgG hypogammaglobulinaemia in critically ill adults with sepsis: systematic review and meta-analysis

  • Manu Shankar-Hari
  • Nicholas Culshaw
  • Benjamin Post
  • Eduardo Tamayo
  • David Andaluz-Ojeda
  • Jesús F. Bermejo-Martín
  • Sebastian Dietz
  • Karl Werdan
  • Richard Beale
  • Jo Spencer
  • Mervyn Singer
Systematic Review

Abstract

Purpose

Plasma immunoglobulin concentrations are acutely altered in critically ill patients with sepsis. However, the association between immunoglobulin levels on the day of sepsis diagnosis and subsequent mortality is inconsistent.

Methods

Systematic review of studies that report immunoglobulin measurements and mortality among adults with sepsis managed in a critical care setting. Fixed and random effect meta-analyses were conducted using low IgG levels as primary exposure and acute mortality as the primary outcome. Both variables were used as defined in individual studies.

Results

The prevalence of a low immunoglobulin G (IgG) concentration on the day of sepsis diagnosis was variable [58.3 % (IQR 38.4–65.5 %)]. Three cut-off points (6.1, 6.5 and 8.7 g/L) were used to define the lower limit of IgG concentrations in the included studies. A subnormal IgG level on the day of sepsis diagnosis was not associated with an increased risk of death in adult patients with severe sepsis and/or septic shock by both fixed and random effect meta-analysis (OR [95 % CI] 1.32 [0.93–1.87] and 1.48 [0.78–2.81], respectively).

Conclusions

This systematic review identifies studies of limited quality reporting heterogeneous sepsis cohorts with varying lower limits of normal for IgG. Although our data suggest that a subnormal IgG measurement on the day of sepsis diagnosis does not identify a subgroup of patients with a higher risk of death, further studies are needed to confirm or refute this finding, and whether optimal cut-offs and time windows can be defined for IgG measurement. This would determine whether patients receiving intravenous immunoglobulin therapy for sepsis could be stratified using IgG levels.

Keywords

Sepsis Adult Immunoglobulin Mortality Survival rate 

Abbreviations

APACHE II score

Acute physiology and chronic health evaluation II score

ARDS

Acute respiratory distress syndrome

Ig

Immunoglobulin

IVIg

Intravenous immunoglobulin

NOS

Newcastle–Ottawa score checklist

RCT

Randomised controlled trial

Supplementary material

134_2015_3845_MOESM1_ESM.pdf (22 kb)
Supplementary material 1 (PDF 21 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg and ESICM 2015

Authors and Affiliations

  • Manu Shankar-Hari
    • 1
    • 2
    • 3
  • Nicholas Culshaw
    • 1
  • Benjamin Post
    • 1
  • Eduardo Tamayo
    • 4
  • David Andaluz-Ojeda
    • 4
  • Jesús F. Bermejo-Martín
    • 4
  • Sebastian Dietz
    • 5
  • Karl Werdan
    • 5
  • Richard Beale
    • 1
    • 2
  • Jo Spencer
    • 3
  • Mervyn Singer
    • 6
  1. 1.Department of Critical Care MedicineGuy’s and St Thomas’ NHS Foundation Trust, St Thomas’ HospitalLondonUK
  2. 2.Division of Asthma, Department of Intensive Care MedicineAllergy and Lung Biology, King’s College LondonLondonUK
  3. 3.Peter Gorer Department of ImmunbiologyKing’s College LondonLondonUK
  4. 4.Hospital Clínico Universitario de ValladolidValladolidSpain
  5. 5.St. Marienkrankenhaus SiegenSiegenGermany
  6. 6.University College LondonLondonUK

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