Sepsis Management in Emergency and Intensive Care Settings

Sepsis arises from a dysregulated host response to infection that results in life-threatening organ dysfunction. Early recognition in the emergency department is critical, with prompt administration of broad-spectrum antibiotics, rapid fluid resuscitation to restore adequate perfusion and careful monitoring of vital signs and biochemical markers. In the intensive care unit, management pivots on source control—removal of infected devices or debridement of infected tissue—alongside optimisation of haemodynamic support through vasopressors and inotropic agents when necessary. Organ supports such as mechanical ventilation and renal replacement therapy are applied according to evolving signs of respiratory failure or acute kidney injury. Antimicrobial stewardship remains pivotal to limit resistance, guiding de-escalation once pathogens are identified or when clinical response permits. Beyond standard care bundles, emerging immunomodulatory approaches target excessive cytokine release, while evolving diagnostic tools, including rapid molecular assays, seek to accelerate pathogen identification. Globally, sepsis management protocols must adapt to varied resource settings, balancing early intervention with cost and infrastructure constraints. Multidisciplinary collaboration between emergency physicians, intensivists, microbiologists and nursing teams underpins continuous reassessment of therapy, ensuring that each patient’s trajectory is closely monitored and interventions are tailored to minimise morbidity and mortality.

Research from Nature Portfolio

An in-depth analysis of early cytokine profiles in severe abdominal sepsis has revealed distinct mediator patterns in gram-negative versus gram-positive infections. Elevated levels of pro-inflammatory cytokines such as tumour necrosis factor-alpha and interleukin-8 were linked to worse outcomes, whereas anti-inflammatory mediators showed variable prognostic value. This work underscores the potential for immunophenotyping to inform risk stratification and to guide adjunctive therapies that modulate host response, paving the way for personalised immunotherapy in critical care settings.

Sepsis Management in Emergency and Intensive Care Settings publication trend

The graph below shows the total number of articles in sepsis management in emergency and intensive care settings across all publications each year (not limited to Nature Index journals).

Technical terms

Sepsis: Life-threatening organ dysfunction caused by a dysregulated host response to infection.

Septic shock: A subset of sepsis with profound circulatory and metabolic abnormalities, characterised by persistent hypotension requiring vasopressors and elevated lactate.

Bacteremia: The presence of viable bacteria in the bloodstream, often confirmed by positive blood cultures.

Cytokine: Small signalling proteins released by immune cells that orchestrate pro- and anti-inflammatory responses.

Empirical antibiotic therapy: Initial broad-spectrum antimicrobial treatment administered before pathogen identification.

SOFA score: Sequential Organ Failure Assessment, a composite measure of organ dysfunction severity used to track sepsis progression.

References

1. Cytokine profile in severe gram-positive and gram-negative abdominal sepsis. Scientific Reports (2015).
2. Utility of shaking chills as a diagnostic sign for bacteremia in adults: a systematic review and meta-analysis. BMC Medicine (2024).
3. Impact of Appropriate Empirical Antibiotic Treatment on the Clinical Response of Septic Patients in Intensive Care Unit: A Single-Center Observational Study. Antibiotics (2024).
4. Prognostic differences in sepsis caused by gram-negative bacteria and gram-positive bacteria: a systematic review and meta-analysis. Critical Care (2023).