Alethyn
Live clinical simulation · Evidence-based

Medicine does not depend only on memorization.It depends on recognizing patterns, making decisions under uncertainty, and acting with judgment.

Interactive clinical simulation for learning medical reasoning step by step. From knowledge to clinical decision.

Explore CasesEnter Simulator
AHA GuidelinesESC 2024ACCRAES Competencies
Case · Acute Coronary Syndrome
00:04:12
HR
112
BP
94/58
SpO₂
92%
Next decision
Administer aspirin 300 mg
Order high-sensitivity troponin
Activate cath lab
Reassess in 15 minutes
Reasoning score 87
What is Alethyn

A simulator that transforms symptoms, signs and fragmented information into diagnosis and therapeutic decisions.

Alethyn trains the four movements of clinical reasoning. Each case is an evolving decision tree where you act, observe consequences, and refine your judgment.

01
Evaluate
Interpret symptoms, vitals and signs as fragmented signal.
02
Decide
Choose investigations and management under uncertainty.
03
Learn
Compare reasoning against evidence and guidelines.
04
Correct
Refine the mental model through targeted feedback.
Traditional studying
  • Memorization
  • Passive reading
  • Isolated concepts
  • No feedback loop
  • No real decisions
Alethyn
  • Clinical reasoning
  • Decision making
  • Real scenarios
  • Immediate feedback
  • Evidence-based learning
Platform

Everything a clinical reasoning trainer should be.

Interactive simulations
Branching cases that evolve from your decisions.
Evidence-based feedback
Each step references AHA, ESC and ACC guidelines.
Progress tracking
Longitudinal performance across cases and competencies.
Clinical dashboards
Time-to-diagnosis, errors and pressure management.
Competency assessment
Mapped against RAES medical competencies.
Adaptive difficulty
Cases tune to your current mastery level.
Randomized events
Vomiting, AED failure, late help — never the same run.
Evidence references
One-click access to guideline source for any step.
Reasoning under uncertainty
Probabilistic engine that mirrors real clinical noise.
Featured cases

Premium clinical scenarios

View all cases
High risk25 min

Chest pain

56-year-old postoperative male with progressive ischemic symptoms evolving into NSTEMI requiring PCI.

Objectives
  • · Recognize ACS
  • · Risk stratify NSTEMI
  • · Activate cath lab pathway
DiagnosisPharmacologyCare coordination
Critical risk18 min

Cardiac arrest

64-year-old collapsed patient requiring BLS → ACLS → ROSC decisions.

Objectives
  • · BLS algorithm
  • · Shockable vs non-shockable
  • · Post-ROSC care
ResuscitationTeam leadershipPressure management
Moderate risk20 min

Palpitations

79-year-old woman with irregular rhythm and neurological symptoms suggesting AF with embolic manifestations.

Objectives
  • · Identify AF
  • · Stroke risk (CHA₂DS₂-VASc)
  • · Rate vs rhythm control
ArrhythmiaAnticoagulationNeurovascular reasoning
Moderate risk22 min

Heart failure

72-year-old male with progressive dyspnea, edema and reduced ejection fraction.

Objectives
  • · HFrEF diagnosis
  • · GDMT initiation
  • · Decongestion strategy
HF managementDiureticsEvidence appraisal
Low risk20 min

Hypertension

Middle-aged woman with chronic renal compromise and secondary hypertension considerations.

Objectives
  • · Secondary HTN workup
  • · Renoprotection
  • · Target selection
Chronic diseaseRenal physiologyPharmacology

Where reasoning reveals diagnosis.

Step into your first simulation and start training the way clinicians actually think.

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