This article substantiates in detail the need to expand the use of esCCO technology in order to determine the state of human health, especially when he is in critical condition or close to it. In such situations, getting information about cardiac output quickly and accurately is an important factor for doctors to make decisions and ensure optimal medical care. The advantage of esCCO technology is its ability to provide the necessary information in a shorter period of time than using other methods. This allows doctors to quickly assess changes in cardiac output and take appropriate measures to normalize the patient's condition. The article also discusses the features of using esCCO technology to determine the state of human health in various situations where changes in cardiac output play a key role. Examples of recording various parameters necessary for calculating cardiac output using the esCCO method were presented, as well as experimental data demonstrating changes in cardiac output over time. Expanding the use of esCCO technology in medical practice is an important step in the development of modern medicine aimed at improving the efficiency and quality of medical care.
$^1$St. Petersburg Polytechnic University of Peter the Great