CircD Sim
Circulatory Dynamics Simulator
See the circulation as a connected system. Adjust blood volume, vascular resistance, and cardiac function to explore how pressure, flow, and fluid balance respond.
Tools to explore, learn, and support clinical practice.
Made with curiosity. Shared freely.
Try a different setting. Follow the physiology. Keep learning.
Circulatory Dynamics Simulator
See the circulation as a connected system. Adjust blood volume, vascular resistance, and cardiac function to explore how pressure, flow, and fluid balance respond.
Mechanical Ventilation Simulator
Connect each ventilator adjustment to the breath it produces. Explore ventilation modes and patient mechanics through pressure, flow, and volume waveforms.
Vital Signs Monitor Simulator
Bring a simulated patient monitor into your teaching. Explore cardiac rhythms and vital signs, practise simulated defibrillation and pacing, or control the monitor from a paired phone.
Your weekly emergency medicine drill
Five questions to keep your clinical thinking active. Test your knowledge, learn from the explanations, revisit past drills, and follow your progress on your device.
Timing, prompts, and a bedside record
Keep track of adult CPR with cycle timing, configurable reminders, and an optional compression metronome. Record events with timestamps, stored on your device.
Simulators are for education. CPR Tracker is a clinical support tool. Read each app’s intended use and limitations before using it.
Open any app in your browser, or add it to your device for quicker access. No app store required.
Install each app from its own page. Installation options vary by browser and device; adding an icon does not guarantee offline use. Remote pairing needs an internet connection.
If the option is missing, check the actions under Edit Actions in the Share menu.
Apple installation help ↗You can always continue using the app in a normal browser tab.
MyEM is my collection of emergency medicine web apps—for exploring ideas, teaching others, and supporting clinical practice.
I create these apps using AI, drawing on my clinical experience and interest in teaching. The aim is simple: to make emergency medicine education and useful tools freely available and accessible.
AI helps turn ideas into working tools. Clinical input and review remain part of the process, but neither human review nor AI assistance eliminates the possibility of errors. Questions, corrections, and thoughtful feedback are welcome.
Original code is intended for release under Apache License 2.0 and original educational content under CC BY 4.0, except where stated otherwise. Check each app’s actual licence and third-party notices before reuse.
Translations are welcome with attribution and must be clearly marked as unofficial and not reviewed or endorsed by MyEM. Modified forks must use distinct branding and must not imply MyEM approval. Third-party material retains its own rights.
Help make these tools clearer, more useful, and better for everyone.