CN1067235C - Continuous determination of systolic and diastolic pressure of body under motion load - Google Patents

Abstract

The present invention relates to a serial testing method for testing the systolic pressure Psi and the diastolic pressure Pdi of a human body under the exercise load, which belongs to the technical field of testing human body physiological parameters, wherein Pdi=Pdo+(Mdi-Mdo)*Pso-Pdo/Mso-Mdo, and Psi=Pdi+(Msi-Mdi)*Pso-Pdo/Mso-Mdo, wherein Pso and Pdo are respectively the maximum value and the minimum value of the pulse wave of a human body at rest, Msi and Mdi are respectively the maximum value and the minimum value of the complete and equivalent pulse wave of a human body under different exercise loads, and Psi and Pdi are respectively the systolic pressure and the diastolic pressure of a human body under different loads. Compared with the traditional quasi-dynamic method, the serial testing method has better continuity, accuracy and precision.

Description

The serial testing of human body systolic pressure, diastolic pressure under the sports load

The serial testing of human body systolic pressure, diastolic pressure relates to the method that a kind of blood pressure detects under a kind of sports load.

The general both at home and abroad at present method of " standard dynamically " that adopts is measured cardio-vascular parameters values such as human blood-pressure under the sports load, blood flow, heart rate, promptly in the process that load increases gradually, reaching in each pause phase of 30 seconds, measuring the various cardio-vascular parameters values under the different load respectively and discontinuously with various conventional sense instruments (as surveying blood flow) with oversleeve blood pressure measuring blood pressure, electrocardiogram thought-read rate, impedance bloodstream instrument or supersonic blood instrument.This method is simple, and certain practical value is arranged, but the discreteness of its data is big, and it is poor to measure concordance constantly, and the pause phase is long, can't reflect the continuous process of motion, adds the detection error of instrument, thereby its accuracy and degree of accuracy all can't meet the demands.Owing to being 87104261 at application number, being called in the power that the obtains application for a patent for invention of " cardio-vascular parameters not damaged detection method and device thereof ", the mathematical model of human body systolic pressure under quiescent condition, diastolic pressure, pulse waveform COEFFICIENT K and a human body cardio-vascular parameters has been proposed, thereby, just can directly determine the dynamic cardio-vascular parameters value of human body if can measure systolic pressure, the diastolic pressure of human body under the sports load.

The objective of the invention is to propose one based on quiet, dynamic pulse wave amount to principle of equal effects basis on sports load under the method for continuously measuring of human body systolic pressure and diastolic pressure.

The invention is characterized in: described systolic pressure P _Si, diastolic pressure P _DiCan determine by following formula respectively: $P_{\mathrm{di}}=P_{\mathrm{do}}+(M_{\mathrm{di}}-M_{\mathrm{do}})\frac{P_{\mathrm{so}}-P_{\mathrm{do}}}{M_{\mathrm{So}}-M_{\mathrm{do}}}$ $P_{\mathrm{si}}=P_{\mathrm{di}}+(M_{\mathrm{si}}-M_{\mathrm{di}})\frac{P_{\mathrm{so}}-P_{\mathrm{do}}}{M_{\mathrm{so}}-M_{\mathrm{do}}}$

Wherein, P _So, P _Do: measuring when being respectively human body tranquillization (zero load) with office cuff

Systolic pressure and diastolic pressure;

M _So, M _Do: when being respectively human body tranquillization (zero load) maximum of pulse wave and

Minima;

M _Si, M _Di: be respectively different motion the load complete and equivalent arteries and veins of human body down

The fight maximum and the minima of ripple;

P _Si, P _Di: be respectively under the different load human body systolic pressure and diastolic pressure through many ripples

Measured value after superposition is average.

Feature of the present invention also is: the maximum of the pulse wave that human body is complete and equivalent under the described different load and minimum M _Si, M _DiCollection, assay method undertaken by following order: (1) begins to detect from quiescent condition, progressively increases experimenter's sports load; (2) gather one group of stable and complete pulse wave automatically in the of short duration as far as possible pause phase between two-stage different motion load; (3) with many ripples superposition on average be about to this group pulse wave elder generation superposition ask again each constantly the method for meansigma methods draw any one complete and equivalent pulse wave under loading; (4) from this equivalence pulse wave, calibrate its maximum M _SiAnd minimum M _Di(5) repeat to obtain the above-mentioned M under the different load by above-mentioned (2)～(4) step _Si, M _DiValue is up to EOT.

Use proof: the method that the present invention proposes can accomplish the end in view.

In order in conjunction with the embodiments the present invention to be done more detailed description below, existing as follows employed accompanying drawing title of present specification and numbering brief introduction: Fig. 1: the circuit according to the cardiovascular dynamic parameter automatic testing equipment of the inventive method development is former

The reason block diagram; Fig. 2: the program flow chart of the described automatic testing equipment of Fig. 1; Fig. 3～Figure 16: the equivalent arteries and veins that certain measured obtains after superposition is average under the different motion load

Maximum, the minima P of ripple fight _Si, P _Di, heart rate HR _iVariation diagram with wave character; Figure 17: the heart rate HR of certain measured equivalent pulse wave under the different motion load _iVariation diagram; Figure 18: the systolic pressure P of certain measured corresponding equivalent pulse wave under the different motion load _SiChange

Figure; Figure 19: the diastolic pressure P of certain measured corresponding equivalent pulse wave under the different motion load _DiChange

Figure; Figure 20: certain measured is cardiac output SV under the different motion load _iVariation diagram.

Embodiment:

Ask for an interview Fig. 1.The 1st, pulse wave pressure transducer, the 2nd, analog/digital converter, the 3rd, master computer PC-386.4,5 is respectively printer and display.

Now test process is described: 1. subjects's systolic pressure P during with office cuff test tranquillization in conjunction with Fig. 2 _So, diastolic pressure P _Do, maximum, the minimum M of pulse wave when importing master computer 32. survey subjects tranquillization simultaneously _So, M _Do, the subjects is seated on the bicycle ergometer seat, pulse wave pressure pick off 1 is contacted with its left hand radial artery strength of beating tightly, above-mentioned M _So, M _DoValue input master computer.3. increase the load of bicycle ergometer step by step.The load of overall process is increased to 200 watts by 0, and totally 6 grades, directly remove to 0 by 200 watts again, be that 0 state has 8 grades at load, amounts to 14 grades, i.e. i=0～13, every grade is 2 minutes when rising, and the grade is 1 minute when decline, and the pause phase is 6～7 seconds.Under every stage load, on computer screen, with selected 4 the stable pulse waves of the method for moving cursor and by each way of demarcating it is divided into 4 complete pulse waves, sends into master computer 3 simultaneously automatically near the pulsation ripple minima that equates to them.4. the average again method of master computer 3 many ripples of usefulness superpositions draws corresponding equivalent pulse waveform under each sports load, respectively to its maximum, minimum M _Si, M _DiDemarcate.5. master computer 3 calculates the corresponding systolic pressure P under each sports load automatically _SiWith diastolic pressure P _Di6. master computer 3 is pressed P according to the corresponding average pulsation that following formula calculates under each sports load automatically _Mi: $P_{\mathrm{mi}}=\frac{1}{T}{\∫}_O^{\mathrm{Ti}}{P}_i\left(t\right)\mathrm{dt}$

Wherein: T _iPulse wave period when being i sports load;

P _iPulse wave when (t) being i sports load.7. master computer 3 calculates the form factor K of corresponding pulse wave under each sports load automatically according to following formula _i: $K_i=\frac{P_{\mathrm{mi}}-P_{\mathrm{di}}}{P_{\mathrm{si}}-P_{\mathrm{di}}}$ 8. master computer 3 calculates corresponding heartbeat output SV under each sports load according to following formula automatically _iWith cardiac output CO _i: ${\mathrm{SV}}_i=\frac{0.28}{K_i^z}(P_{\mathrm{si}}-P_{\mathrm{di}})T_i$ ${\mathrm{CO}}_i=\frac{1}{T}S{V}_i$

Fig. 3～Figure 20 is certain subjects's a test result.Wherein, DP is a pulse pressure difference, DP=P _Si-P _Di, HR _iIt is heart rate.Its result of calculation is asked for an interview table 1.

By than as seen, the seriality of this method, accuracy and accuracy all are better than " quasi-dynamic method ".It is compared its correlation coefficient and reaches more than 0.8 with office cuff, see Appendix.

Claims (3)

1. the method for continuously measuring of human body systolic pressure and diastolic pressure under the sports load is characterized in that: described systolic pressure P _Si, diastolic pressure P _DiCan determine by following formula respectively: $P_{\mathrm{di}}=P_{\mathrm{do}}+(M_{\mathrm{di}}-M_{\mathrm{do}})\frac{P_{\mathrm{so}}-P_{\mathrm{do}}}{M_{\mathrm{so}}-M_{\mathrm{do}}}$ $P_{\mathrm{si}}=P_{\mathrm{di}}+(M_{\mathrm{si}}-M_{\mathrm{di}})\frac{P_{\mathrm{so}}-P_{\mathrm{do}}}{M_{\mathrm{so}}-M_{\mathrm{do}}}$

Wherein, P _So, P _Do: systolic pressure and diastolic pressure when being respectively human body tranquillization (zero load) with office cuff mensuration;

M _So, M _Do: the maximum and the minima of pulse wave when being respectively human body tranquillization (zero load);

M _Si, M _Di: be respectively different motion the load maximum and the minima of the complete and equivalent pulse wave of human body down;

P _Si, P _Di: be respectively human body systolic pressure and the measured value of diastolic pressure after many ripples superposition is average under the different load.

2. the method for continuously measuring of human body systolic pressure and diastolic pressure under a kind of sports load according to claim 1 is characterized in that: the maximum of the pulse wave that human body is complete and equivalent under the described different load and minimum M _Si, M _DiCollection, assay method undertaken by following order:

(1) begins to detect from quiescent condition, progressively increase experimenter's sports load;

(2) gather one group of stable and complete pulse wave automatically in the of short duration as far as possible pause phase between two-stage different motion load;

(3) with many ripples superposition on average be about to this group pulse wave elder generation superposition ask again each constantly the method for meansigma methods draw any one complete and equivalent pulse wave under loading;

(4) from this equivalence pulse wave, calibrate its maximum M _SiAnd minimum M _Di

(5) repeat to obtain the above-mentioned M under the different load by above-mentioned (2)～(4) step _Si, M _DiValue is up to EOT.

3. the method for continuously measuring of human body systolic pressure and diastolic pressure under a kind of sports load according to claim 2 is characterized in that: the described pause phase is 6～7 seconds.

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