This decision-tree training tool helps emergency medicine trainees develop critical "rule out the killers first" instincts. It guides users through structured reasoning for various chief complaints, offering teaching pearls and citations to relevant literature. The app is designed for educational use only and functions fully offline.
1.1
October 2, 2026
New: 10 pediatric pathways (fever, abdominal pain, testicular pain, vomiting, headache, limp, respiratory distress, rash, altered mental status, syncope). Improved adult pathways and references.
MoreWorstFirst is an educational tool designed to train emergency medicine trainees in "worst-first" reasoning for undifferentiated complaints. It helps build the instinct to rule out critical conditions before considering benign explanations.
No, WorstFirst is fully offline. It does not require an account, sign-in, or any data collection, allowing for use in any environment.
WorstFirst includes 29 chief-complaint decision trees that span cardiovascular, respiratory, neurologic, abdominal, trauma, and toxicology, among other areas relevant to emergency medicine.
No, WorstFirst is strictly for educational use. It is not a medical device and must not be used for diagnosing, treating, or guiding patient care. All content is for learning purposes only.
The app features structured decision trees with branch-by-branch reasoning, including teaching pearls, common pitfalls, and citations to landmark literature and current guidelines.
WorstFirst has an age rating of 17+, indicating it is intended for adult users and healthcare professionals.
The app was last updated on July 17, 2026, with version 1.0. Future updates will likely focus on expanding content and refining existing decision trees.
No, WorstFirst does not contain advertisements. It is a completely ad-free application.
