Spectral analysis of sphygmogram

Spectral analysis of sphygmogram

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Actuality.The heart system executes the important role in the organism.It is important task of medicine to diagnose of the state of this system.Electrocardiogram is the one of methods of control its state.Cardiointervalgram is another way of study of the state of the heart system.

I studies the change of rhythm of heart as reaction of organism on external influences.Sphygmography is a method of graphical recording of pulse fluctuations of blood vessels.Sphygmograms are recorded using sensors installed on areas of the the gel bottle cashmere body with a distinct pulsation of blood - on the carotid, subclavian, femoral and radial arteries.The data obtained allow us to judge the atherosclerosis of certain sections of blood vessels, hypertension and a number of other pathological processes in which the elasticity of the vessels is impaired.LED and laser technology allowed us to significantly simplify the registration system of the sphygmogram and make the process of obtaining it more reliable.

The device is a system of LED-photodiode, between which the studied object is located - the finger of the hand.The signal is formed due to kt196 torque converter a change in the volume of blood in the place of indication during the passage of the pulse wave.Purpose of work.The spectral analysis of the sphygmogram impulses gives the information about heart system.The spectrum of sphygmogram of healthy man is wider.

Numeral coefficients, which are characterizing correlation high and low frequencies, are offered.This was offered to analysis the spectrum of signal from the optical sensor, which is containing information by the of impulses and cardiountervals.These signals contain more information, than cardiointervalgram and single impulse of sfigmogram only.Methods.In addition to statistical analysis, spectral analysis is also used to study cardiointervalograms and sphygmograms.

It consists in calculating the fundamental frequency and higher harmonics of the signal and estimating the energy contribution of each of them.Results.The spectrum of cardiointervalgram contains information about the slow waves of heart work.The spectrum of sphygmogram contains information about frequency of heart work and about higher frequencies also.Conclusion.

The analysis of heart work was made by the spectrum of cardiointervalgram and on the spectrum of sphygmogram.The second method allows to obtain more information about health of man.