The measurement layer

Readiness, resolved to a single measure.

The Perioperative Resilience Index is built to measure what a patient brings to an operation: dozens of signals resolved into six physiologic domains, and six domains resolved into one number available before induction. In development; illustrative only, and not a diagnostic.

The precedent

Virginia Apgar gave newborns a score in 1953.

It changed neonatal care because it made a fuzzy question answerable in sixty seconds. Before the score, whether a newborn was in trouble was a matter of individual judgment. After it, it was a number any two clinicians could compare, act on and follow over time.

That is what a measure does to a field. It turns an impression into something that can be tracked, taught, argued about and improved.

The gap

Almost every other question in the pre-operative workup has a number attached to it.

One does not.

Kidney function

A number

Estimated glomerular filtration rate, on every routine panel.

Cardiac risk

A number

Validated indices, calculated before most major operations.

Airway difficulty

A scale

Mallampati, assessed at the pre-anesthesia evaluation.

Readiness for what is about to happen

Nothing

No standard measure exists for whether the body is prepared for the operation ahead.

Risk calculators predict what will happen to a patient. The PRI is built to measure what can still be changed before it does.

What goes in

Four kinds of signal.

Readiness is not one measurement. It is the convergence of what the body is doing now, what the person actually lives like, what the blood shows under stress, and what they inherited.

  1. Continuous physiologic signal

    The patient's own physiology, already being recorded. Sleep, recovery, cardiovascular variability. Most patients arrive at surgery already carrying months of it.

  2. Patient-reported baseline

    What the chart cannot see. How a person actually eats, sleeps, moves and recovers, almost none of which survives into a medical record.

  3. Targeted laboratory values

    Not the routine pre-op draw. A narrow set of markers chosen because they move under surgical stress, and can still be moved before it.

  4. Inherited biology

    The one input that never changes. Drawn once, it informs every operation a person will ever have.

The PRI is in development. Any values shown anywhere on this site are illustrative, for demonstration only, and are not a diagnostic or a clinical device.

The standard

When readiness has a number, preparing it stops being optional.

Understand and improve each patient's readiness for surgery, personalize their perioperative care, and measure their recovery afterward.

Partner with PERIOME

In development. Illustrative only, and not a diagnostic or clinical device.