Hemodynamic management of septic shock

Area of Science:

• Critical Care Medicine
• Cardiovascular Physiology
• Sepsis Pathophysiology

Background:

• Septic shock management relies heavily on physiological principles due to limited randomized controlled trial (RCT) evidence.
• Key decisions in septic shock treatment are often based on pathophysiological understanding rather than definitive RCT data.

Purpose of the Study:

• To review the current state of hemodynamic management in septic shock.
• To highlight the reliance on physiological reasoning and the gaps in evidence-based treatment strategies.

Main Methods:

• Review of existing literature on hemodynamic management in septic shock.
• Analysis of primary (early) and secondary (later phase) resuscitation strategies.
• Assessment of monitoring techniques from basic to advanced levels.

Main Results:

• Early resuscitation focuses on restoring arterial pressure and cardiac output using fluids and vasopressors/inotropes, guided by basic monitoring and physical exams.
• Advanced monitoring in later stages allows for more sophisticated macrocirculation management.
• Understanding and therapeutic options for microcirculation in septic shock remain limited.
• No specific hemodynamic intervention (fluids, drugs, devices, algorithms) has been definitively proven to improve outcomes.
• Optimal management during the resolution phase of septic shock is largely unaddressed.

Conclusions:

• Hemodynamic management of septic shock is primarily guided by physiological principles, with limited RCT support for specific interventions.
• Despite knowledge gaps, particularly concerning microcirculation and resolution phase management, observed mortality rates in septic shock have declined over the past decade.