Bkg

What is bgr? BHR is a method for assessing the function of the cardiovascular system, which consists of recording changes in the amplitude and frequency of heart contractions in response to physical activity. The method is used to diagnose and monitor the state of the cardiovascular system.

A ballistocardiogram (BGD) is a slow-motion ECG that allows you to evaluate the systolic function of the heart and detect intracardiac conduction disturbances

The technique for recording BGD was proposed by the English physicist William Gurd, who discovered the vibrations of the chest during a sigh. Against the background of the patient's breathing in slow motion, the nature of vibrations of the diaphragm or chest wall is recorded. These fluctuations are measured by a sensor connected by a cable to a low-frequency oscilloscope (20-30 Hz). The information obtained is compared with the ECG in order to exclude ventricular arrhythmias, since they are visible in the full spectrum.

When recording an ECG, the sensor moves above the person’s chest from bottom to top in the longitudinal plane. During movement, the sensor records the contraction of the current-carrying element of the right atrium tube, which served to monitor pulsation during inspiration. Heartbeat amplitude is measured by the time interval between two impacts of the sensor on the patient's body. The vibration of the chest is wave-like - asymmetrical. The wave has certain characteristics:

1. amplitude 1. shape 1. frequency.

Heart rate is measured using a frequency meter. To do this, you need to divide the interval between the two reinforcing elements by the number of beats per minute. The result is the frequency of the heart waves. Typically, heart rate readings are recorded on a paper tape in the form of a straight line. The interval between heartbeats is depicted as a horizontal bar