How to spot a stalling wound in four visits: a measurement protocol

Chronic wounds rarely deteriorate in one visit. They stall across four. Here is a repeatable protocol for catching that stall while there's still time to change the plan.

Step 1 — Standardize the capture

Before trending anything, fix the input. Every visit needs the same lighting, the same angle, and a calibrated measurement — not a ruler-and-eyeball estimate. Use AI-powered wound imaging with point-and-capture so surface area, depth, and volume come from the pixels, not the clinician's memory.

Step 2 — Record surface area, depth, and volume every visit

Surface area alone hides tunneling and undermining. Depth alone misses spreading. Log all three, every encounter, in the same units. One skipped visit breaks the curve.

Step 3 — Compute weekly percent area reduction (PAR)

At each visit, calculate the percentage change in wound area since the baseline. The Sheehan benchmark is well-established: diabetic foot ulcers that fail to reach 50% area reduction by week four have only about a 9% chance of closing by week twelve. PAR is your early warning.

Step 4 — Plot the trajectory, not the snapshot

A single visit will always look ambiguous. A four-point curve will not. When the line flattens or turns upward, that is stalling — even if the wound bed "looks fine" today.

Step 5 — Trigger a plan change on the signal

When PAR misses at week four, the response is protocolized: reassess perfusion, consider culture-guided antibiotics, escalate debridement frequency, optimize glycemic and nutritional status, and only then consider advanced therapies. Don't graft into a stalling bed.

Step 6 — Close the loop with the chart

The trajectory belongs in the note, not a side spreadsheet. See the full workflow in the Healing analytics dashboard, which ties measurement trends to ranked next actions inside the encounter.

Measure the same way every time. Trend the numbers. Act on the curve.