Shock Physiology

Learning Objectives

1. Describe compensatory mechanisms of shock and recall clinical indicators of shock progression
2. Identify physiological factors (e.g., preload, afterload, and filling pressures) that impact hemodynamics in shock, and integrate this knowledge into selecting interventions to optimize perfusion
3. Explain the physiological basis for fluid resuscitation in critically ill patients, focusing on how oncotic, osmotic, and hydrostatic pressures influence fluid movement and distribution.

ICUedu: Reframing Shock I

ICUedu: Reframing Shock II

FizzICU: Why do we give Fluids in resuscitation?

• Part 1: Background
• Part 2: Oncotic Pressure
• Part 3: Osmotic Pressure
• Part 4: Hydrostatic Pressure
• Part 5: Keeping the fluid intravascular
• Mean Systemic Filling Pressure and Venous Return

Resources

ICUedu.org (Dr. Sara Crager) and FizzICU.com (Dr. Michael Ritchie) offer physiology-centered approaches to resuscitation, focusing on the underlying mechanics of shock, fluid management, and hemodynamics.