What is the difference between an electrocardiogram and a Vectorcardiogram?

Electrocardiography (ECG) is currently the most widely used method of sensing electrical activity in the human heart. Vectorcardiography (VCG) is an investigation method that was previously compared to ECG several times and was evaluated as a useful investigation method [1,2,3].

What is cardio vector?

The activity of the heart can be approximately modeled by an electric dipole, also called the cardiac vector. The magnitude and orientation of the dipole characterize the current state of the heart along the cardiac cycle.

Why is it called a 12-lead?

The 12-lead ECG displays, as the name implies, 12 leads which are derived by means of 10 electrodes. Three of these leads are easy to understand, since they are simply the result of comparing electrical potentials recorded by two electrodes; one electrode is exploring, while the other is a reference electrode.

What is VCG in cardiology?

Vectorcardiography (VCG) is a method of recording the magnitude and direction of the electrical forces that are generated by the heart by means of a continuous series of vectors that form curving lines around a central point. Vectorcardiography was developed by E. Frank in the mid 1950s.

What is a QRS vector?

The mean QRS axis represents the average of the instantaneous electrical vectors generated during the sequence of ventricular depolarization, as measured in the frontal plane. It tells us the direction the depolarization is headed in the ventricles.

What signs and symptoms that you may need ECG?

You may need an ECG if you have any of the following signs and symptoms:

• Chest pain.
• Dizziness, lightheadedness or confusion.
• Heart palpitations.
• Rapid pulse.
• Shortness of breath.
• Weakness, fatigue or a decline in ability to exercise.

What does a 12 lead ECG tell you?

The 12-lead EKG provides more information on the diagnosis of your cardiac arrhythmia than an outpatient Holter or Event monitor, as it represents information recorded from a larger surface area surrounding the heart.

What is VCG medical?

MeSH. D014672. Vectorcardiography (VCG) is a method of recording the magnitude and direction of the electrical forces that are generated by the heart by means of a continuous series of vectors that form curving lines around a central point.

What is vectorcardiography?

[edit on Wikidata] Vectorcardiography (sometimes abbreviated as VCG) is a method of recording the magnitude and direction of the electrical forces that are generated by the heart by means of a continuous series of vectors that form curving lines around a central point.

What is the normal range of supraventricular angle?

The mean, normal SA in healthy young adult females and males is 66° and 80°, respectively, and very similar magnitudes are found in the elderly population (65 years and older). In ECG analysis, the SA is categorized into normal (below 105°), borderline abnormal (105–135°) and abnormal (greater than 135°).

What are the standard markers of repolarization abnormalities on ECG?

Current standard ECG markers of repolarization abnormalities include ST depression, T wave inversion and QT prolongation. Many studies have investigated the prognostic strength of the SA for cardiac morbidity and mortality compared to these and other ECG parameters.