Skip to main content
Learn medicine through cases

The answer comes later. Your reasoning comes first.

Physician-built case practice for physicians, trainees, and health-professions learners—starting with critical care. Make the call before the reveal, then learn the pattern and test it in another case.

Built and physician-vetted by Michael Hansen, MD, critical care intensivist. Educational only—not medical advice.

Michael Hansen, MD, critical care intensivist and founder of Operation ADH
Michael Hansen, MDCritical care intensivist · 1.1M+ on YouTube
How learning works

A case is the rep. Transfer is the test.

Commit before the reveal. Compare the reasoning. Return later and test the pattern in a new case.

  1. CaseRead the case.
  2. CommitMake the call.
  3. CompareSee the answer and why.
  4. Teach backExplain the pattern.
  5. SpaceReturn later.
  6. TransferUse it in a new case.

Built from human clinical reasoning.

Clinical reasoning becomes a governed practice pattern. AI presents the rep; evidence and physician review keep it accountable.

  1. 1Clinical reasoning
  2. 2Governed case
  3. 3AI practice
  4. 4Human correction

The learner still thinks. AI presents the rep; evidence and physician review check it.

Trusted on YouTube

I’ve taught medicine to 1.1M+ on YouTube.

See how Dr. Mike Hansen teaches clinical medicine, then practice the reasoning yourself.

Visit the channel →
Michael Hansen, MDAlmost No One Thinks of this DiagnosisMichael Hansen, MD · Pulmonary & Critical Care
Maya · In development

The two-way case conversation.

Maya is the planned voice of Operation ADH Medical AI. She presents the case while Dr. Hansen questions, reasons aloud, and commits—so the audience reasons along and studies the medical reasoning.

Not the current case rep. Release waits for OpenAI runtime, safety, latency, and parity gates.
Human physicianDr. Mike HansenQuestions · reasons · commits · teaches
Operation ADH Medical AIMayaPresents · advances · challenges · reveals
Michael Hansen, MD, in a white coat over scrubs
Michael Hansen, MD — critical care
Why I built ADH

Train the moment before the answer.

Critical care taught me to make a defensible call before the answer appears. ADH makes that moment repeatable: the machine presents and challenges; the clinician thinks.

Prepare for boards by thinking through clinical cases.Commit first. Review second. Learn from the miss.
Founding membership

You can outsource your thinking. But you can't outsource your understanding.

think first. commit second. then compare

Start a case
Michael Hansen, MD, in scrubs
Michael Hansen, MDCritical care intensivist · Founder
Clinical reasoning without the deskilling