Characterization of cardiac dysfunction in sepsis: an ongoing challenge

Area of Science:

• Cardiology
• Critical Care Medicine
• Pathophysiology

Background:

• Sepsis-induced cardiomyopathy (SIC) is a prevalent complication in severe sepsis and septic shock.
• Traditional assessment of heart function in SIC relies on hydraulic or hemodynamic pump models.
• Limited attention has been paid to intrinsic myocardial contractility and its interaction with peripheral circulation during sepsis.

Purpose of the Study:

• To review the conceptual background, historical perspectives, and physiological mechanisms of SIC.
• To critically evaluate current evidence and limitations in SIC characterization.
• To propose future directions for hemodynamic assessment of intrinsic cardiac function in sepsis.

Main Methods:

• Literature review of conceptual models, historical data, and physiological mechanisms of SIC.
• Analysis of current evidence and limitations in animal models and clinical characterization of SIC.
• Exploration of potential future directions for hemodynamic assessment and underlying mechanisms of SIC.

Main Results:

• Current understanding of SIC is largely concept-driven, with traditional models overlooking intrinsic myocardial function.
• Existing animal models for SIC research have significant limitations.
• There is a need for improved methods to assess intrinsic cardiac contractile function in sepsis.

Conclusions:

• SIC is currently understood as a result of microbial activation of pathways leading to myocardial dysfunction.
• Further research is needed to overcome methodological limitations in SIC assessment.
• Exploring additional underlying mechanisms of SIC is recommended for better understanding and management.