AnaSim

AnaSim simulates adult anesthesia for education and research. It combines published pharmacology and cardiorespiratory models with a patient monitor and anesthesia machine interface.

Run AnaSim

Open robche.com/AnaSim in your browser.

For local use, install with Python 3.10 or later.

python3 -m venv .venv
source .venv/bin/activate
python -m pip install anasim-simulator
anasim

In Windows Command Prompt, use python in place of python3 and activate with .venv\Scripts\activate.bat. anasim opens the interface in your browser and works offline after installation. Press Ctrl+C in the terminal to stop the server.

Choose a guided scenario or open simulation, then select Start simulation and Start. Use Apply to confirm setting changes.

Features

Drug delivery supports boluses, manual infusions, and plasma or effect-site TCI, depending on the drug.

Limits

AnaSim supports adults aged 18 to 70 years within the input limits. The architecture guide describes source populations, simulator calibrations, and model limits. Acid-base balance, lactate, tissue oxygen debt, machine pneumatics, and cardiopulmonary resuscitation are not modeled.

Headless use

Run a 60-second simulation and save a CSV recording.

anasim --mode headless --duration 60 --record

Documentation

Citation and license

Cite using CITATION.cff.

AnaSim 1.6 and later use the proprietary, source-available AnaSim noncommercial license.

Contact Robert Chen for paid licenses or written fee waivers. Sharing copies is allowed under the license terms. Earlier releases retain their MIT terms.

Early AnaSim versions adapted code from Python Anesthesia Simulator, licensed under GPL-3.0. Those implementations have since been substantially rewritten. Third-party material retains its own terms.