Advanced
Technical
IVT
physiologic reserve
A patient's capacity to tolerate surgical stress and maintain organ function during perioperative challenges.
Full Definition
The body's ability to compensate for the metabolic demands, fluid shifts, and inflammatory responses associated with surgical procedures and critical illness. In acute care surgery, assessment of physiologic reserve guides surgical timing, approach selection, and perioperative management strategies, particularly in elderly patients or those with multiple comorbidities who may have limited compensatory capacity.
Usage
Usage note: Often referenced in the context of frail or elderly patients; quantify when possible using specific assessment tools.
In Context
- "The patient's limited physiologic reserve necessitated a staged approach to the complex reconstruction." — surgical planning documentation
- "Assessment of physiologic reserve suggested the patient could tolerate the planned emergency procedure." — preoperative evaluation
Also known as
functional reserve
compensatory capacity
Contrasted with
physiologic exhaustion
decompensation
Don't confuse with
cardiac reserve
respiratory reserve