RU2291663C2 - Method for measuring arterial blood pressure - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: method involves recording pulsogram of body region under study. Systolic and diastolic arterial blood pressure is calculated from the following original formulas: AD_sys=a x A, where AD_sys is the systolic arterial blood pressure in mm of mercury column, a is the empirical pulse meter transducer coefficient obtained from control measurement made with tonometer in mm of mercury column; A is the pulse wave amplitude in absolute numbers; AD_dy=(AD_sys/e^β), where AD_dy is the diastolic arterial blood pressure in mm of mercury column; e is constant equal to 2.718271; β is the HBR²/(AD_sys x 100), where HBR is the heart beat rate in strokes per 1 min; HBR=(t x υ) x 60/t, where t is the measurement time in s; υ is the pulse wave frequency in 1/s or s^-1.

EFFECT: immediate measurement of arterial blood pressure and pulse.

14 dwg

Description

The invention relates to medicine, therapy, anesthesiology and intensive care, surgery, disaster medicine, pathophysiology.

For various diseases, injuries, injuries, injuries, prolonged compression syndrome, it is necessary to know the values of systolic and diastolic blood pressure, as well as heart rate.

Rapid determination of these parameters of the circulatory system makes it possible to immediately establish the severity of the condition of the patient or wounded (injured) and develop the right treatment tactics.

Changes in the circulatory system are immediately reflected in the state of the hemomicrocirculatory bed.

Currently, the most common is the auscultatory method for determining blood pressure, developed by the Russian surgeon N.S. Korotkov in 1905.

To measure pressure, a simple device consisting of a mechanical pressure gauge, a cuff with a pear and a phonendoscope is used.

This method is based on the complete compression of the cuff of the brachial artery and listening to tones arising from the slow release of air from the cuff.

Also known is the oscillometric method for determining blood pressure, which is based on the registration of pulsations of air pressure arising in the cuff when the blood passes through the portion of the artery squeezed by the cuff (Instrumental methods for the study of the cardiovascular system. Handbook edited by T. Vinogradova, 1986 )

However, the use of known methods for determining blood pressure requires specific conditions: access to the upper limbs of a sick or wounded person and some time to complete the study (3-7 minutes).

The present invention is to develop a method for determining blood pressure, which allows for the rapid diagnosis of the state of the circulatory system immediately (discretely) and in dynamics.

The essence of the claimed method is as follows.

An infrared or any other heart rate monitor records a pulsogram on a finger, lobe, or other accessible area or part of the body. The amplitude (A) and the frequency of the pulse wave (υ) are determined.

Based on the obtained values, systolic blood pressure (AD _sys ) and pulse rate (HR) are calculated by the formulas:

AD _{sys =} a × A,

where AD _sys is systolic blood pressure, mmHg;

a is the empirical coefficient of the heart rate sensor;

A is the amplitude of the pulse wave (abs. Hours).

Heart rate = (t × υ) × 60 / t,

where heart rate is the heart rate, beats. in minutes;

t is the time interval for which the measurement was made, s;

υ - pulse wave frequency, 1 / s or s ^-1 .

The determination of diastolic blood pressure (AD _dy ) is carried out according to the formula:

AD _dy = (AD _sys / е ^(β) ),

where AD _dy - diastolic blood pressure, mm Hg;

AD _sys - systolic blood pressure, mmHg;

e is a constant equal to 2.718271;

The technical result achieved by using the proposed invention is the ability to immediately determine the magnitude of systolic and diastolic blood pressure, as well as heart rate, which, in turn, makes it possible to immediately establish the severity of the condition of the patient or wounded (injured) and develop the right tactics treatment.

Clinical examples of the invention.

Control determination of blood pressure (AD) is carried out by an electronic tonometer "OMRON" (Japan)

Example 1 (figure 1).

The results obtained using the OMRON electronic tonometer (Japan):

AD _sys = 119 mmHg

AD _dy = 75 mmHg

Heart rate = 73 beats. in min

The mathematical method:

Measurement time (t) - 10 s

Amplitude (A) = 112

Pulse wave frequency (υ) - 1.22 s ^-1

Heart rate (HR) = 73 beats. in min

Heart rate = (10 × 1.22) × 60/10 = 73 beats. in min

The coefficient of the device K = 1

AD _sys = 112 mmHg

AD _dy = 112 / 2.71 ^{73 × 73/112/100} = 70 mmHg

Example 2 (figure 2).

The results obtained using the OMRON electronic blood pressure monitor:

AD _sys = 140 mmHg

AD _dy = 79 mmHg

Heart rate = 89 beats. in min

The mathematical method:

Measurement time (t) = 10 s

Amplitude A = 136

Pulse wave frequency (υ) - 1.53 s ^-1

Heart rate (HR) = 92 beats. in min

Heart rate = (10 × 1.53) × 60/10 = 92 beats. in min

The coefficient of the device K = 1

AD _sys = 136 mmHg

AD _dy = 136 / 2.71 ^{92 × 92/136/100} = 73 mmHg

Example 3 (figure 3).

The results obtained using the OMRON electronic tonometer (Japan):

AD _sys = 141 mmHg

AD _dy = 103 mmHg

Heart rate = 62 beats. in min

The mathematical method:

Measurement time (t) = 7 s

Amplitude A = 131

Pulse wave frequency (υ) - 1.08 s ^-1

Heart rate (HR) = 65 beats. in min

Heart rate = (7 × 1.08) × 60/7 = 65 beats. in min

The coefficient of the device K = 1

AD _sys = 131 mmHg

AD _dy = 131 / 2.71 ^{65 × 65/131/100} = 95 mmHg

Example 4 (figure 4).

The results obtained using the OMRON electronic tonometer (Japan):

AD _sys = 123 mmHg

AD _dy = 65 mmHg

Heart rate = 72 beats. in min

The mathematical method:

Measurement time (t) = 8 s.

Amplitude A = 116

Pulse wave frequency (υ) - 1.27 s ^-1

Heart rate (HR) = 76 beats. in min

Heart rate = (8 × 1.27) × 60/8 = 76 beats. in min

The coefficient of the device K = 1

AD _sys = 116 mmHg

AD _dy = 116 / 2.71 ^{76 × 76/116/100} = 70 mmHg

Example 5 (figure 5).

The results obtained using the OMRON electronic tonometer (Japan):

AD _sys = 137 mmHg

AD _dy = 83 mmHg

Heart rate = 75 beats. in min

Measurement time (t) = 12 s.

Amplitude A = 131

Pulse wave frequency (υ) - 1.33 s ^-1

Heart rate (HR) = 80 beats. in min

Heart rate = (12 × 1.33) × 60/12 = 80 beats. in min

The coefficient of the device K = 1

AD _sys = 131 mmHg

AD _dy = 131 / 2.71 ^{80 × 80/131/100} = 80 mmHg

Example 6 (Fig.6).

The results obtained using the OMRON electronic tonometer (Japan):

AD _sys = 139 mmHg

AD _dy = 79 mmHg

Heart rate = 82 beats. in min

The mathematical method:

Measurement time (t) = 9 s.

Amplitude A = 132

Pulse wave frequency (υ) - 1.43 s ^-1

Heart rate (HR) = 86 beats. in min

Heart rate = (9 × 1.43) × 60/9 = 86 beats. in min

The coefficient of the device K = 1

AD _sys = 132 mmHg

86 × 86/132/100

AU _dy = 132 / 2.71 ^{86 × 86/132/100} = 75 mmHg

Example 7 (Fig.7).

The results obtained using the OMRON electronic tonometer (Japan):

AD _sys = 143 mmHg

AD _dy = 87 mmHg

Heart rate = 78 beats. in min

The mathematical method:

Measurement time (t) = 3 s

Amplitude A = 141

Pulse wave frequency (υ) - 1.32 s ^-1

Heart rate (HR) = 79 beats. in min

Heart rate = (3 × 1.32) × 60/3 = 79 beats. in min

The coefficient of the device K = 1

AD _sys = 141 mmHg

AD _dy = 141 / 2.71 ^{79 × 79/141/100} = 90 mmHg

The proposed method allows the immediate determination of the value of systolic and diastolic blood pressure, as well as heart rate.

Claims (1)

A method for determining blood pressure, characterized in that the pulsogram of the studied area of the body is recorded and systolic and diastolic blood pressures are calculated according to the following formulas: AD _sys = a × A, where AD _sys is systolic blood pressure, mmHg; a is the empirical coefficient of the pulsometry sensor obtained using the control determination of blood pressure with a tonometer, mm Hg; And - the amplitude of the pulse wave, abs.h .; AD _dy = (AD _sys / e ^β ), where AD _dy - diastolic blood pressure, mm Hg; e is a constant equal to 2.718271;

where heart rate is the heart rate, beats. in min .; Heart rate = (t × υ) × 60 / t, t is the time interval for which the measurement was made, s .; υ - pulse wave frequency, s ^-1 .

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