# Virtual Heart Team

- **Event:** [Built with Claude: Life Sciences](https://cerebralvalley.ai/e/built-with-claude-life-sciences)
- **When:** Jul 7 at 12:00 PM – Jul 14 at 12:00 AM (EDT)
- **Where:** Online
- **Team:** [MATIAS IGNACIO PINCETTI SAUTEREL](https://cerebralvalley.ai/u/mpincetti)
- **GitHub:** https://github.com/Mips99/Virtual_heart_team
- **Demo video:** https://www.youtube.com/watch?v=TQRl5XZ9QeQ
- **Gallery:** https://cerebralvalley.ai/e/built-with-claude-life-sciences/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/built-with-claude-life-sciences/hackathon/gallery/179

Complex revascularization — left main, multivessel, frailty — sits in genuine
equipoise. Guidelines mandate a Heart Team, yet 20–24% of recommendations flip on
re-discussion, and the specialty of whoever is in the room shifts CABG rates. Most
centers have no Heart Team at all.

Virtual Heart Team convenes four Claude agents — interventional cardiologist,
cardiac surgeon, clinical cardiologist, non-voting methodologist — over two
deliberation rounds, grounded in a 30-citation evidence base built with Claude
Science, every DOI verified and auditable from the UI. Sonnet runs the agents;
Opus runs intake and synthesis. Each proceduralist runs in advocate and neutral
framings, N=5 samples each, and drift is computed deterministically in code — no
model produces the number.

Drift came out near zero. So we pointed Claude Code at our own headline metric and
asked it to find the flaw. It did: the advocate prompt's CONCEDE clause bounds
advocacy by construction. We ablated it. Removing the guardrail widens
advocate-versus-neutral divergence from 0.20 to 0.80 (−3..+3 scale, N=5); re-running
on Opus widens it to 1.20.

Our finding is not that specialists are biased — we induced that bias ourselves. It
is that the guardrail measurably contains it, and you can see it happen in one
click, on the same patient.

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Markdown version of https://cerebralvalley.ai/e/built-with-claude-life-sciences/hackathon/gallery/179. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt