Dr. Lin's PPH Companion

Build v0.5 · September 30, 2026

Weiping Lin, D.O., FACOG, FACOOG
Holy Name Medical Center, OB/GYN
Wlin@holyname.org

An educational postpartum hemorrhage simulator, staged roadmap, and uterotonic reference for medical students and residents on the obstetrics and gynecology clerkship. Part of MedEd Forge.

How to use

1. Practice: choose a case version (or leave it on Random) and start the case. The patient's history changes between attempts, so open the Case chart tab on the right edge before choosing a drug.
2. Act as a team: you start with two hands, you and the nurse. Call for help to bring in more. Pick actions, then advance the clock 2, 5, or 10 minutes. The clock pauses when results arrive, help arrives, or the nurse raises an alarm.
3. Decision points: at key moments the case pauses for a single-best-answer question. Your choice takes effect in the case, and the explanation appears immediately.
4. Debrief: review your practice score by domain, any critical errors, missed or delayed steps, and the full timeline. Print or save it as a PDF, copy it as text, or email a summary.
5. Roadmap: pick a stage to see how you get there and the four tracks that run at the same time: mobilize, resuscitate, find the cause, and treat the cause.
6. Drugs: uterotonic and tranexamic acid cards, with contraindications first.

How it works

• The simulator runs a simplified, minute-by-minute model of blood loss and vital signs. It is built for teaching sequence and judgment, not to predict real physiology.
• Blood loss appears as a visual estimate until you quantify it, because visual estimates run low.
• Stages follow blood loss or vital signs, whichever comes first.
• The practice score uses six domains scored 0 to 3. It is formative and has not been validated for assessment. Any harmful choice is flagged as a critical error.

Content sources

• American College of Obstetricians and Gynecologists. Postpartum Hemorrhage. Practice Bulletin No. 183. Obstet Gynecol 2017;130(4):e168–e186 (reaffirmed 2024).
• American College of Obstetricians and Gynecologists. Clinical Practice Update: Use of Nonsurgical Hemorrhage-Control Devices for Postpartum Hemorrhage Management.
• Staging is inspired by the California Maternal Quality Care Collaborative (CMQCC) Obstetric Hemorrhage Toolkit.

Items marked † are draft values pending verification. This app is not affiliated with or endorsed by ACOG or CMQCC.

Install as an app

Load this page once while online; afterwards it works offline and opens full-screen.

1. Chrome or Edge (Windows, Mac, Chromebook): click the install icon at the right end of the address bar, or open the browser menu and choose Install app.
2. Android (Chrome): open the menu (⋮) and choose Install app or Add to Home screen.
3. iPhone / iPad (Safari only): tap Share, then Add to Home Screen.
4. Firefox: desktop Firefox does not install web apps; the app still runs normally in a tab.

Updates

The app updates itself. When a new version is ready, a bar appears at the top; tap Reload. Check now

Privacy

All patients are fictional, and the app never asks for patient information. Nothing you enter leaves this device. Your practice history is stored only in this browser; you can clear it from any debrief. Names typed for a printout or email are never saved.

Rights and use

© 2026 Weiping Lin, D.O., FACOG, FACOOG.

Licensed under Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). You may share and adapt this app for non-commercial purposes, provided you credit Weiping Lin, D.O., link to the license, and note any changes. Commercial use, resale, or inclusion in a paid product requires written permission from the author.

For education only. Not for clinical decisions. Doses, thresholds, and protocols vary by institution; always follow your hospital's PPH protocol.

Credits

Developed with AI-assisted coding: Claude Opus 5.5 (Anthropic), with design input from ChatGPT (OpenAI).