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Overview of the ECG Waves, Deflections, Intervals, Durations

ECG Introduction to ECG interpretation Video lecture: The ECG curve: P wave, PR Interval, Q wave, R wave, S wave, QRS complex, ST segment, T…

The electrical axis of the heart (ECG axis)

ECG Introduction to ECG interpretation The electrical axis of the heart Although often ignored, assessment of the electrical axis is an integral part of ECG…

The electrical axis of the heart (heart axis): ECG & physiology

…Introduction to ECG interpretation The electrical axis of the heart (heart axis) Although often ignored, assessment of the electrical axis is an integral part of…

Introduction to cardiac arrest

…follows: [...] Of every 10 such victims, the heart in 6 or 7 showed no recent disease in coronary arteries or in heart muscle. In other…

The Cabrera format of the 12-lead ECG and inverted lead aVR

ECG Introduction to ECG interpretation Standard display of ECG leads in the 12 lead ECG Numerous conditions that can be diagnosed using the 12 lead…

Introduction to exercise stress testing (treadmill test, exercise ECG)

…to Evaluation of coronary artery disease and angina pectoris). Yet, exercise stress testing provides a fundamental parameter that cannot be obtained by other imaging methods…

The T-wave: physiology, variants and ECG features

…the baseline, regardless of whether its other parts are above the baseline. T wave inversions are frequently misunderstood, particularly in the setting of ischemia. Normal…

Brugada Syndrome: Diagnosis & SCD Prevention

…death (SCD), Brugada syndrome (BrS) has evolved from an obscure electrocardiographic curiosity into a major focus of contemporary cardiac electrophysiology [1] . Recognized as a primary…

The ST segment: physiology, normal appearance, ST depression & ST elevation

ECG Introduction to ECG interpretation The ST segment: physiology, normal appearance, ST depression & ST elevation The ST segment corresponds to the plateau phase of the…

The ECG leads: Electrodes, limb leads, chest (precordial) leads and the 12-Lead ECG

…An ECG lead is a graphical description of the electrical activity of the heart and it is created by analyzing several electrodes. In other words…

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