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9 Σεπ 2024 · 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 and limb leads of the ECG (below diagram)
The cardiac axis refers to the general direction in which the heart depolarises. Each wave of depolarisation begins at the Sinoatrial node, then spreads to the Atrioventricular node, before travelling to the Bundle of HIS and the Purkinje fibres to complete an electrical cardiac cycle.
The electrical axis of the heart (heart axis) Although often ignored, assessment of the electrical axis is an integral part of ECG interpretation. The electrical axis reflects the average direction of ventricular depolarization during ventricular contraction.
26 Απρ 2016 · Limb leads (I, II, III, aVR, aVL, and aVF) provide a precise methodology of determining the depolarization of the various cardiac axes. The summation of electrical forces traveling through cardiac structures produces a mean vector of electrical force. The spatial direction of these mean vectors can be determined through ECG leads.
16 Φεβ 2002 · I—Leads, rate, rhythm, and cardiac axis. Electrocardiography is a fundamental part of cardiovascular assessment. It is an essential tool for investigating cardiac arrhythmias and is also useful in diagnosing cardiac disorders such as myocardial infarction.
1 Νοε 2007 · Determination of the cardiac axis on a 12-lead electrocardiogram (ECG) is considered a core element of basic ECG interpretation, but is also the area that many find the most complex when they...
6 Μαρ 2011 · 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.
