ECG Interpretation
Develop interpretation skills in ECG Basics, analyze 12-lead tracings in ECG Library, and advance proficiency in ECG Reviews.
Determining Axis
The axis of the ECG is the major direction of the overall electrical activity of the heart. It can be normal, leftward (left axis deviation, or LAD), rightward (right axis deviation, or RAD) or indeterminate (northwest axis).
P Wave
The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria.
Quizzes and Cases
Test your cardiology knowledge with Quizzes and Cases on a variety of topics including Atrial Fibrillation, Coronary Artery Disease, ECG Interpretation and more. Choose Study Mode to review the answers as you go; or choose Test Mode to challenge your fastest time. You can even build your own custom quizzes!
Cardiology Review
Broaden your understanding with hundreds of Topic Reviews, Facts and Pearls on important topics in cardiology, and Mnemonics to learn about cardiology.
Chronic heart failure is a syndrome, not a specific disease, and occurs as a final common pathway in multiple disease states.
Amyloid cardiomyopathy (cardiac amyloidosis) is a form of restrictive cardiomyopathy that can result in significant progressive diastolic congestive heart failure.