Levocardiography Selective

Selective left cardiography is a method of studying the heart that allows you to obtain information about the condition of its left half. It is used to diagnose and treat various heart diseases such as myocardial infarction, angina pectoris, arrhythmia and others.

The operating principle of selective left cardiography is that a special sensor is placed on the left side of the heart, which transmits signals to a computer. These signals are processed and analyzed, which makes it possible to obtain information about the work of the heart in real time.

One of the advantages of selective levocardiography is its accuracy and sensitivity. It allows you to detect even small changes in the functioning of the heart, which may be invisible with other research methods. In addition, this method does not require the use of radiation, making it safe for patients.

However, like any other research method, selective levocardiography has its limitations. For example, it cannot always be used to diagnose diseases of the lungs or respiratory tract. There are also some contraindications for this method, for example, the presence of metal implants in the heart or an allergy to the contrast agent.

In general, selective left cardiography is an important method for examining the heart, which helps doctors obtain more accurate information about the patient’s condition and choose the most effective treatment method.

Levocardiography selective

Since the end of the twentieth century, in order to improve the diagnosis of cardiac pathology and accurately determine cardiac arrhythmias, it has become possible to conduct a cardiographic study with the simultaneous introduction of two different colored coloring substances - markers - into the blood. The most popular option in medical practice is the use of contrast dyes during electrocardiography. We are talking about carrying out a special method of recording heartbeats during selective levocardiography or, as they often say, “PCG”.

The essence of the research method

Carrying out left cardiography is based on direct measurement of the amplitude of cardiac ECG complexes without preliminary amplification using an electrode inserted into a vein on the patient’s left arm. Since the amplitude of the electrical signal when recording a low strength (and in this case it is the lowest current strength) is small against the background of a certain noise, the result is unclear. By applying an artificial signal, this problem can be easily solved. For this, a high frequency generator (20 kHz) is used. It is connected to an area of ​​the heart muscle using three electrodes (“sticks”). The frequency oscillation penetrates the skin, reaches the myocyte fiber and is amplified by 0.3 times. Then it passes into the hemodynamic channel, which makes it possible to obtain direct data on the state of the myocardium and its structure. As the heart rate decreases, the amplitude of the signal increases and gradually fades, reducing the magnitude of the diaphragm tension. By processing the received data on an oscilloscope, a picture appears: