Organ Recovery and Implant Time Intervals (Ischemia Clock)
The intervals between an organ's recovery and implant events, from the times you record.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Events in order, one per line
- Cross-clamp, 2026-10-19 22:10 Removed from ice, 2026-10-20 09:40 Reperfusion, 2026-10-20 10:25
- A limit in hours from the first event
- 12
Result: Cross-clamp to Reperfusion: 12 h 15 min. 12 hours from Cross-clamp is 2026-10-20 10:10, before Reperfusion.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Events in order, one per line: name, then YYYY-MM-DD HH:MM
- A limit in hours from the first event (optional)
How this is calculated
Citation
Stated arithmetic: the elapsed time between recorded events in one time zone. The OPTN definitions of cold and warm ischemia time were not read, so no interval is named as either.
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.