Dynamocardiogram Longitudinal

Longitudinal dynamocardiogram (longitudinal DKG, synonym standard dynamocardiogram) is a method for studying cardiac activity that allows you to evaluate the electrical activity of the heart and its response to physical activity.

The method is based on measuring the electrical activity of the heart using an electrocardiograph during physical activity. The subject performs certain exercises that cause an increase in heart rate and increased workload on the heart. At this time, the electrical activity of the heart is recorded, which is then analyzed and interpreted by a cardiologist.

A longitudinal dynamocardiogram allows you to assess the condition of the heart muscle, identify possible heart rhythm disturbances, evaluate the effectiveness of treatment and prevent the development of cardiovascular diseases.

This research method is widely used in cardiological practice for the diagnosis and treatment of various heart diseases. It is one of the most accurate and informative methods for studying cardiac activity and can help doctors make an accurate diagnosis and prescribe effective treatment.

This article is devoted to the study of such a heart research tool as longitudinal dynamocardiogram (LDC).

Of course, ECG is the first and main method of studying the electrical activity of the heart, however, diagnosing CHF using ECG data is not always possible [1]. In this regard, the search for new methods for diagnosing heart failure has become relevant, among which are non-invasive and painless DCG, which allows one to evaluate the electrical activity of the heart during organ function. This type of instrumentation entered our lives relatively recently, although the ultrasound method itself was invented and approved back in 1852.

Now there are many interpretations of longitudinal DCG (12 channel or multichannel) [3]. This method has not lost its relevance for more than several decades, and the development of microelectrodes has made it possible to obtain significantly more information about the electrical activity of cardiomyocytes. Various schools of doctors offer their approaches to deciphering FCG. Traditionally, it was believed that prolongation of the QT interval indicates myocardial damage in the upper parts of the heart. However, more recent studies have shown that an increase in QT-PCG intervals is also observed with pathology of the myocardium of the lower parts of the heart, as well as with intraventricular conduction disorders. B.D. Tsvetkova et al. (2008), considering the features of PCG in ischemic heart disease, note:

**Dynamocardiogram (DCG)** is a special method of functional diagnostics of the heart, which measures fluctuations in blood pressure in the brachial artery during arm movement. This procedure is necessary to evaluate the functioning of the heart muscle and identify various heart diseases. In this article we will look at the product