🏥 Clinical Example

Elderly patient with aortic stenosis undergoing hip fracture repair

Anesthesia causes:

Vasodilation → ↓ preload
Blunted baroreflex → no compensatory tachycardia
PPV → ↓ venous return

Without intervention → catastrophic hypotension.

The anesthesiologist:

Maintains preload
Uses phenylephrine to preserve SVR
Avoids tachycardia
Uses gentle induction to avoid collapse

This is homeostasis management in action.

[ If you want to go deeper

I can expand into any of these:

Autonomic physiology under anesthesia
Ventilatory homeostasis and anesthetic effects
Hemodynamic homeostasis and vasopressor selection
Thermoregulation under anesthesia

Which system would you like to dissect next?]