A DEVICE FOR DETERMINING BLOOD PRESSURE WITH HIGH
ACCURACY ON THE BASIS OF HYDROMANTES TECHNOLOGY 

Gerashchenko Mikhail Sergeevich, assistant, sub-department of medical cybernetics and informatics, Penza State University
(40 Krasnaya street, Penza, Russia), E-mail: mpo@list.ru 

61.616-71 

Background. In the treatment of hypertension, patients must constantly, during the day, to control their blood pressure. It is established that long-term deviation from the norm and uncontrolled increase in pressure are the main causes of heart attack or
stroke. Pressure monitoring can be carried out by various methods. Volumetric compression oscillometry is the most common non-invasive method of measuring blood pressure. On the basis of this method, up to 80 % of household tonometers are realized. Their popularity is caused by convenience of operation of devices and possibility of application in household conditions by persons of various age categories. In practice, this method often gives questionable estimates of systolic and diastolic pressure with a significant error reaching 20–50 mm Hg.V.. Inaccurate pressure measurements, with measures based on the values obtained, can cause health problems to increase and lead to disastrous consequences. Accurate assessment of systolic and diastolic pressure in the domestic environment remains an open problem in biomedical engineering. The purpose of this work is to improve the accuracy of the assessment of systolic and diastolic pressure, characterizing the cardiovascular system of a person in tonometers, devices and automatic observation systems.
Materials and methods. This goal is achieved through the development of a new hydro-banking method of forming oscillations and the creation of algorithmic software to implement it.
Results. The methodology hydromagnetic studies to assess blood pressure values. Experimental studies of the relationship between the oscillation amplitudes and the values of systolic and diastolic blood pressure were performed. First proposed and patented hydrotechnology for determining blood pressure. A virtual device in the LabVIEW graphical programming environment and a prototype model for blood pressure assessment were made.
Summary. The proposed technical solution creates the prerequisites for the implementation of an easy-to-use tonometer, which has an increased accuracy with an error of up to 1 %. Application gidroperitny technology makes it possible to record the pressure corresponding to the beginning and end of the formation of oscillations that corresponds to the method based on listening to the sounds of Korotkoff. 

blood pressure, pressure estimation error, oscillometry, hydro-banking technology