In this BoardsCast episode, we open Tobias Chapter 85 – Diaphragmatic Hernias and reframe the diaphragm not as a rigid barrier, but as a dynamic pressure valve that responds to changes in thoracic and abdominal forces.

Understanding that concept unlocks everything about diaphragmatic injury, herniation, organ displacement, respiratory compromise, and surgical timing.

You’ll learn:

• Why the diaphragm behaves like a flexible pressure regulator
• How negative thoracic pressure and positive abdominal pressure create herniation
• Why chronic hernias behave radically differently from acute ones
• What “loss of domain” means — and why it matters for surgical planning
• Classic clinical signs and imaging findings for diaphragmatic defects
• How to stabilize before surgery (and what kills patients if you don’t)
• The board-relevant explanation for respiratory collapse on induction

This episode builds the physiologic foundation that every diaphragmatic hernia case depends on.

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