How to Use This Course
Welcome to EKG Lab’s Learn Mode — a structured, interactive journey through ECG interpretation. Whether you’re a medical student seeing your first rhythm strip, a nursing student preparing for clinical rotations, or a paramedic trainee sharpening your skills, this course will build your confidence in reading ECGs from the ground up.
This isn’t a slide deck or a list of facts to memorize. Each lesson is written as a conversation — we explain the "why" behind every pattern, build mental models you can reason from, and give you hands-on practice with AI-generated ECGs so you can see every concept in real time.
Mechanism first, pattern second. When you understand why atrial fibrillation looks the way it does, you don’t need to memorize it — you can predict it. Every lesson follows this principle: understand the physiology, then see the ECG.
Three Ways to Learn
EKG Lab is built around three complementary modes, each designed for a different stage of learning:
- Explore Mode — A sandbox where you can generate any of 28 rhythm types, adjust heart rate and severity, toggle annotations, and compare abnormal rhythms against normal sinus. Use this whenever you want to see a rhythm and study it on your own terms.
- Learn Mode (you are here) — A structured curriculum that guides you from the basics of cardiac electrophysiology through advanced rhythm interpretation. Each lesson builds on the last, with embedded interactive elements to reinforce your understanding.
- Quiz Mode — Test yourself with generated ECGs at beginner, intermediate, or advanced difficulty. The quiz uses smart distractors based on commonly confused rhythms, so it targets your weak spots.
The three modes are designed to work together. Read a lesson in Learn Mode, then jump to Explore Mode to play with the rhythm. When you’re feeling confident, switch to Quiz Mode and test yourself. Come back to Learn Mode whenever you need a deeper explanation.
How Lessons Work
Every lesson page contains narrative explanations written to help you understand the "why" behind ECG patterns, not just the "what." But passive reading only gets you so far. Scattered throughout the text you’ll find three types of interactive elements that force you to engage with the material:
- Sim-Triggers — Blue buttons that jump to Explore mode with a specific rhythm pre-loaded. When you read about atrial fibrillation, you can immediately see it generated on screen. Use these liberally — the more rhythms you see, the faster you’ll learn.
- Interactive Questions — Think-before-you-read prompts, self-check quizzes, and clinical reasoning challenges. Each has a click-to-reveal answer so you can test yourself before seeing the explanation. Don’t skip these — research shows that retrieval practice (trying to recall information) is far more effective than re-reading.
- Mini-Interactives — Embedded tools like waveform labelers, caliper measurements, and decision trees that let you practice hands-on skills right within the lesson. These turn abstract concepts into concrete skills you can apply at the bedside.
Don’t just read passively. Every time you see a sim-trigger, click it and study the rhythm. Every time you see a question, try to answer it before revealing the answer. The difference between reading about ECGs and learning ECGs is active engagement.
Suggested Study Paths
Everyone starts at a different level. Here are some recommended approaches depending on where you are in your training:
- Complete beginner: Start with Module 1, Section 1.2 (The Electrical Heart) and work through every page in order. Don’t skip the foundations — they make everything else click. Expect to spend 20–30 minutes per section.
- Some ECG exposure: Take the Pre-Assessment on the next page. If you can identify normal sinus rhythm and measure a heart rate, consider starting at Module 2 (Sinus & Supraventricular Rhythms). You can always loop back to Module 1 if you hit a concept that feels shaky.
- Refresher/review: Jump to Module 4 (Special Patterns & Clinical Integration) for the clinical decision-making content. Use the embedded interactives for practice, and switch to Quiz Mode to pressure-test your knowledge.
Whichever path you choose, don’t try to rush. ECG interpretation is a visual skill that develops with repetition. Each rhythm you generate and study builds pattern recognition that will serve you at the bedside.
The best way to learn ECG interpretation is to see as many rhythms as possible. Use the sim-triggers liberally — every time you read about a rhythm, generate it and study it. Volume builds intuition.