Vectorcardiography Atrial

Vector cardiography (VCG) is a method of recording the electrical activity of the heart, which allows one to obtain information about the functioning of individual chambers of the heart. One type of VCG is atrial vector cardiography, which is used to diagnose heart diseases such as arrhythmias, atrial hypertrophy and dilatation.

Atrial vector-cardiography is a type of VCG in which the electrical activity of the atria of the heart is recorded. For this purpose, a special electrode is used, which is placed in the atria. The data is then recorded on an ECG machine.

When using atrial VCG, additional information about the functioning of the atria can be obtained, which can help in the diagnosis of various diseases. For example, atrial VCG can show the presence or absence of atrial congestion, hypertrophy, and dilatation. This can be useful in determining the severity of the disease and choosing the right treatment tactics.

Overall, atrial vector cardiography is an important method for diagnosing heart disease and can be used in combination with other diagnostic methods to obtain a more complete picture of the condition of the heart.

To perform atrial vectorcardiography (AVCG), a preliminary inversion of the P waves is required, which occurs when holding the breath after maximum exhalation before manipulation, which is usually caused by degeneration of the conduction system and a decrease in repolarization of the left atrium myocardium. The absolute increase in the duration of the PQ interval is 50-70 ms, and the depression of the S-T segment and transition zone is inversely proportional to the duration of the QRS cycle and the age of the patient. However, with the expansion of the left atrioventricular orifice and an increase in intra-atrial pressure, the increase in the duration of the P-V interval is reduced to 30-60 ms. Consequently, by analyzing the dynamics of lengthening or shortening of the P-V interval, one can judge the increase in the end-diastolic volume of the left or right ventricles and atrium.