2024年11月17日 · Cardiac axis represents the sum of depolarisation vectors generated by individual cardiac myocytes. Clinically is is reflected by the ventricular axis, and interpretation relies on determining the relationship between the QRS axis …

2025年3月17日 · Simple Method to Determine Heart Axis. It will allow us to know in which quadrant is the electrical axis by looking at two leads. How? Very simple. We check whether the QRS deflection in leads I and aVF are positive or negative. With this we will be able to determine if the heart axis is normal or a deviation is present.

Learn the definition and physiology of the electrical axis of the heart, with emphasis on ECG and clinical implications.

2024年1月8日 · Interpreting the electrocardiogram (ECG) is a key step in determining the heart's electrical axis. The cardiac axis is the sum of all depolarization vectors of the heart, and vector analysis determines the direction of the net flow of current through the heart.

2023年12月20日 · Extreme Axis Deviation = QRS axis between -90° and 180° (= “Northwest Axis” = “No Mans Land”). Methods of ECG Axis Interpretation. Method 1: The Quadrant Method. The most efficient way to estimate axis is to look at LEAD I and LEAD aVF. Examine the QRS complex in each lead and determine if it is Positive, Isoelectric (Equiphasic) or Negative.

Using leads I and aVF the axis can be calculated to within one of the four quadrants at a glance. If the axis is in the "left" quadrant take your second glance at lead II. both I and aVF +ve = normal axis; both I and aVF -ve = axis in the Northwest Territory; lead I -ve and aVF +ve = right axis deviation; lead I +ve and aVF -ve . lead II +ve ...

The ECG axis is the direction of the overall electrical activity of the heart. ECG can be used to help identify problems with the heart's rhythm (cardiac arrhythmia) or with the conduction of electricity through the heart. The axis is measured in degrees, from 0 (horizontal) to +90 (vertical) and -90 (inverted).

2011年3月6日 · Cardiac axis represents the overall direction of electrical activity as it spreads through the cardiac conduction system. In other words, it represents the net effect of all generated action potentials within the heart .

2022年5月10日 · Here you will be able to analyse in English and German the ECG variations with axis deviation. The Axis trainer online is interactive and the arrow can be moved to demonstrate each of the specific QRS complex changes.

A complete guide to systematic ECG interpretation; assessment of rhythm, rate, P-wave, PR interval, QRS complex, J point, J 60 point, ST segment, T-wave, QT (QTc) interval and much more. Includes a complete e-book, video lectures, clinical management, guidelines and …