Cardiac Axis Quiz
Understand frontal plane QRS axis interpretation in about 10 minutes. Free 16 question quiz with no sign up, built to sharpen ECG skills and avoid common pitfalls.


08:30
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BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
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Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Below is a preview of how scores are typically distributed across each scale.
Cardiac Axis Knowledge (CAK)
Cardiac Axis Knowledge (CAK)
Average
6
Normal range
3.7 — 8.2
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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SAMPLE QUESTIONS
Example Questions From the Test
- Normal-axis quadrant
- Right axis deviation
- Left axis deviation
- Extreme axis deviation
- A predominantly negative QRS complex
- A predominantly positive QRS complex
- An absent QRS complex
- A QRS complex determined only by the T-wave direction
- A horizontal rightward axis near 0°
- An inferior vertical axis near +90°
- A mildly superior-left axis near −30°
- A superior vertical axis near −90°
WHAT THE TEST MEASURES
About This Assessment
Cardiac Axis Quiz - Symptoms and Signs
Test your knowledge of frontal-plane QRS axis interpretation with 16 questions on positive and negative QRS dominance, limb-lead quadrants, perpendicular leads, axis estimates, and common interpretation pitfalls. This free educational quiz requires no sign-up. It does not diagnose a heart condition or replace ECG review by a qualified clinician. Seek urgent medical help for chest pain, severe breathlessness, fainting, or other concerning symptoms.
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