Association between Corticosteroids and In-Hospital Mortality After Cardiac Arrest: A Multicenter Study Using the...

Area of Science:

• Critical Care Medicine
• Pharmacology
• Clinical Outcomes Research

Background:

• Cardiac arrest survivors face poor clinical outcomes.
• The role of corticosteroids in post-cardiac arrest care is debated.
• Investigating corticosteroid impact on mortality across patient subgroups is crucial.

Purpose of the Study:

• To determine the association between corticosteroid administration and in-hospital mortality in intensive care unit (ICU) patients after cardiac arrest.
• To explore if this association varies based on clinical phenotypes.

Main Methods:

• Utilized the eICU Collaborative Research Database, including 4,580 adult ICU patients post-cardiac arrest.
• Employed multivariable logistic regression, propensity score matching, and landmark analysis to control for confounders and bias.
• Defined exposure as systemic corticosteroid administration during the ICU stay.

Main Results:

• Corticosteroid use was linked to significantly lower in-hospital mortality (aOR 0.67; 95% CI 0.56-0.81).
• Survival benefits were concentrated in comatose patients (Glasgow Coma Scale ≤8) and those with chronic obstructive pulmonary disease (COPD).
• No survival benefit was observed in non-comatose patients; neurological recovery was better with corticosteroids, but mortality benefits did not vary by inflammatory markers.

Conclusions:

• Corticosteroid administration is associated with reduced in-hospital mortality in post-cardiac arrest patients.
• The benefits are primarily seen in specific phenotypes, particularly comatose patients.
• Future trials should consider phenotype-guided approaches for corticosteroid therapy.