Trauma ICU Rounds Episode 7 - Shock Talk I: Pathophysiology & Classification
Apr 24, 2020
Dive into the intricate world of shock in trauma care. Discover its dynamic nature and the urgency in identifying patients at risk. Learn about the physiological effects of shock on oxygen delivery and cellular health. Explore a straightforward classification system, breaking down hypovolemic, cardiogenic, distributive, and obstructive shock. Understand the vital differences between compensated and uncompensated shock, setting the stage for effective treatment strategies. This insightful discussion is essential for any trauma practitioner.
AI Snips
Chapters
Transcript
Episode notes
Understanding Shock
- Shock is inadequate oxygen/nutrient delivery for normal tissue/cellular function, creating a supply/demand imbalance.
- This imbalance, if unrecognized or underappreciated, can lead to serious complications for patients.
Cellular Respiration and Shock
- Healthy cellular respiration produces ATP using oxygen, yielding 32 ATP per glucose molecule.
- Shock impairs this, forcing anaerobic glycolysis with less ATP and lactate buildup.
Oxygen Extraction and Critical DO2
- When oxygen delivery (DO2) decreases, oxygen extraction ratio increases to maintain cellular metabolism.
- Beyond a critical DO2, oxygen consumption decreases, leading to dysoxia and tissue hypoxia.