RU99106197A - THE METHOD OF INDIVIDUAL DETERMINATION IN THE ORGANISM OF THE FUNCTION OF ELASTICITY AND CONTINUOUS DEFINITION OF A SYSTEMIC FLOOD OF A LIVING BEING - Google Patents
THE METHOD OF INDIVIDUAL DETERMINATION IN THE ORGANISM OF THE FUNCTION OF ELASTICITY AND CONTINUOUS DEFINITION OF A SYSTEMIC FLOOD OF A LIVING BEINGInfo
- Publication number
- RU99106197A RU99106197A RU99106197/14A RU99106197A RU99106197A RU 99106197 A RU99106197 A RU 99106197A RU 99106197/14 A RU99106197/14 A RU 99106197/14A RU 99106197 A RU99106197 A RU 99106197A RU 99106197 A RU99106197 A RU 99106197A
- Authority
- RU
- Russia
- Prior art keywords
- function
- pressure
- calculated
- elasticity
- blood pressure
- Prior art date
Links
- 230000036772 blood pressure Effects 0.000 claims 13
- 230000017531 blood circulation Effects 0.000 claims 8
- 210000000709 Aorta Anatomy 0.000 claims 4
- 210000001765 Aortic Valve Anatomy 0.000 claims 2
- 210000004369 Blood Anatomy 0.000 claims 2
- 239000008280 blood Substances 0.000 claims 2
- 230000000875 corresponding Effects 0.000 claims 2
- 230000000747 cardiac effect Effects 0.000 claims 1
- 230000035487 diastolic blood pressure Effects 0.000 claims 1
- 230000035488 systolic blood pressure Effects 0.000 claims 1
- 230000002792 vascular Effects 0.000 claims 1
Claims (1)
где CVP - произвольное центральное венозное давление, которое установлено или рассчитано, и COref - эталонное значение минутного объема сердца, берут, по меньшей мере, первый дифференциал кровяного давления по времени p(t) = dp/dt, и вычисляют функцию эластичности С(р), по меньшей мере, по p(t), используя нелинейную модель.1. The method of individual determination in the body of the function of elasticity C (p) = dV / dp of the vascular system after the ventricle of the heart of a living being by the blood pressure p (t) and the reference minute volume of the heart COref, which continuously determine the pressure p (t) in the aorta near the aorta, the mean MAP blood pressure is calculated from the blood pressure p (t), the systemic resistance R of the body as
where CVP is an arbitrary central venous pressure that is established or calculated, and COref is a reference value of the heart’s minute volume, at least the first differential of blood pressure is taken over time p (t) = dp / dt, and the elasticity function C is calculated (p ), at least p (t), using a non-linear model.
р(t)≅ p(ts),
где ts - время, когда закрывается аортальный клапан.2. The method according to claim 1, characterized in that they use only p (t) values that satisfy the following condition for calculating the elasticity function C (p):
p (t) ≅ p (ts),
where ts is the time when the aortic valve closes.
для произвольных функций импеданса Z (р) и произвольных моментов времени t таким образом, что
является оптимально удовлетворяемым.5. The method according to one of the preceding claims, characterized in that the blood flow q (t) is determined based on the pressure p (t) and the first time derivative of dp / dt and the elasticity function is calculated according to
for arbitrary impedance functions Z (p) and arbitrary moments of time t such that
is optimally satisfied.
и затем вычисляют индивидуальную функцию эластичности С(р) как
8. Способ по одному из пп.3 и 6, отличающийся тем, что определяют обратную величину функции эластичности С(р) посредством многочлена второго порядка и аппроксимируют С(р) посредством следующей функции:
9. Способ по одному из предшествующих пунктов, отличающийся тем, что аппроксимируют функцию эластичности С(р) посредством многочлена конечного порядка и используют этот многочлен для экстраполяции С(р) за пределы интервала давления, зарегистрированного при определении эталонного минутного объема сердца.7. The method according to claim 1, characterized in that it defines the minimum function
and then calculate the individual elasticity function C (p) as
8. The method according to one of claims 3 and 6, characterized in that the reciprocal of the elasticity function C (p) is determined by a second-order polynomial and approximated by C (p) by the following function:
9. The method according to one of the preceding paragraphs, characterized in that the elasticity function C (p) is approximated by means of a polynomial of finite order and this polynom is used to extrapolate C (p) beyond the pressure interval recorded in determining the reference minute volume of the heart.
и затем вычисляют индивидуальную функцию эластичности С(р) как
C(p) = ∑kβkpk
11. Способ по одному из пп. 3 и 5, отличающийся тем, что используют функцию эластичности С(р), вычисленную при p(t)≅ p(ts), для увеличения объема кровотока q(t) в виде полной функциональной системы и, в частности, описывают q(t) в виде ряда Фурье посредством следующего уравнения
где коэффициенты qk определены посредством минимизации среднеквадратичной ошибки, а величины to и ts обозначают моменты времени, когда открывается и закрывается аортальный клапан.10. The method according to claim 1, characterized in that it defines the minimum of the function
and then calculate the individual elasticity function C (p) as
C (p) = ∑ k β k p k
11. The method according to one of paragraphs. 3 and 5, characterized in that they use the elasticity function C (p) calculated at p (t) ≅ p (ts) to increase the blood flow q (t) as a complete functional system and, in particular, describe q (t ) as a Fourier series using the following equation
where the coefficients q k are determined by minimizing the root-mean-square error, and the values of t o and t s denote the points in time when the aortic valve opens and closes.
где A - коэффициент пропорциональности.13. The method according to one of the preceding paragraphs, characterized in that determine the dependence of the aortic impedance / pressure on
where A is the proportionality coefficient.
или
15. Способ по п. 1, отличающийся тем, что определяют кровоток q(t) на основании давления p(t) и первой производной по времени dp/dt и вычисляют функцию импеданса
согласно
16. Способ по одному из предшествующих пунктов, отличающийся тем, что аппроксимируют функцию аортального импеданса Z(р) посредством многочлена конечного порядка и используют этот многочлен для экстраполяции Z(р) за пределы интервала давления, зарегистрированного во время тарирования.14. The method according to one of the preceding paragraphs, characterized in that they determine the nonlinear function of aortic impedance using Fourier transforms in relation to blood pressure and postulated blood flow according to
or
15. The method according to claim 1, characterized in that the blood flow q (t) is determined based on the pressure p (t) and the first time derivative of dp / dt and the impedance function is calculated
according to
16. The method according to one of the preceding paragraphs, characterized in that the aortic impedance function Z (p) is approximated by means of a polynomial of finite order and this polynom is used to extrapolate Z (p) beyond the pressure interval recorded during calibration.
где CVP - произвольное центральное венозное давление, которое установлено или рассчитано, и COref - эталонное значение минутного объема сердца, берут, по меньшей мере, первый дифференциал кровяного давления по времени и вычисляют функцию эластичности С(р) и кровоток q(t), по меньшей мере, по p(t), используя нелинейную модель.17. A method for continuously determining the systemic blood flow q (t) of a living being, in which the pressure p (t) in the aorta or near the aorta is continuously determined, calculates the average blood pressure MAP from the blood pressure p (t), calculates the systemic resistance R of the organism as
where CVP is an arbitrary central venous pressure that is established or calculated, and COref is a reference value of the heart’s minute volume, at least the first differential of blood pressure is taken over time and calculate the elasticity function C (p) and the blood flow q (t), at least in p (t), using a non-linear model.
19. Способ по п.17, отличающийся тем, что используют функцию эластичности С(р), установленную согласно одному из пп.1-16.18. The method according to p. 17, characterized in that determine the systemic flow q (t) by:
19. The method according to p. 17, characterized in that use the function of elasticity C (p), set according to one of claims 1 to 16.
SV = ∫q(t)dt
при этом, в частности, соответствующий период времени может соответствовать времени сердечного сокращения или времени выброса во время сердечного сокращения.20. The method according to claim 17, characterized in that the stroke volume of the blood SV is calculated by integrating the blood flow for the corresponding period of time according to
SV = ∫q (t) dt
however, in particular, the corresponding period of time may correspond to the time of the heartbeat or the time of the ejection during the heartbeat.
SV = γ∫q(t)dt
с
22. Способ по одному из пп.16 и 17, отличающийся тем, что вычисляют изменение ударного объема крови согласно
и используют его само по себе или с другими параметрами, например, средним кровяным давлением MAP, систолическим кровяным давлением APsys, диастолическим кровяным давлением АРDIA и частотой сердечных сокращений HR для корректирования ударного объема крови.21. The method according to one of claims 1 and 17, characterized in that the stroke volume of the blood SV is calculated by comparing the continuous flow q (t) with the reference minute volume of the heart COref by
SV = γ∫q (t) dt
with
22. The method according to one of claims 16 and 17, characterized in that the change in stroke volume is calculated according to
and use it alone or with other parameters, for example, MAP average blood pressure, APsys systolic blood pressure, DIA AP diastolic blood pressure, and HR heart rate to correct stroke volume.
по произвольному центральному венозному давлению CVP, которое было измерено или рассчитано.24. The method according to p. 23, characterized in that continuously determine the average pressure MAP from the curve of blood pressure and, thereby, continuously calculate the system resistance according to
by an arbitrary central venous pressure CVP, which was measured or calculated.
25. The method according to p. 23, characterized in that the mean pressure MAP is continuously determined from the blood pressure curve and, thereby, the elasticity function is continuously calculated according to
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19814371A DE19814371A1 (en) | 1998-03-31 | 1998-03-31 | Method for in-vivo determination of the compliance function and the systemic blood flow of a living being and device for carrying out the method |
DE19814371.0 | 1998-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
RU99106197A true RU99106197A (en) | 2001-02-20 |
RU2179408C2 RU2179408C2 (en) | 2002-02-20 |
Family
ID=7863096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU99106197/14A RU2179408C2 (en) | 1998-03-31 | 1999-03-30 | Method for individually determining flexibility function and continuously determining systemic blood circulation of a living being |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0947941B1 (en) |
JP (1) | JP3397716B2 (en) |
KR (1) | KR100331093B1 (en) |
CN (1) | CN1188801C (en) |
CA (1) | CA2266883C (en) |
DE (2) | DE19814371A1 (en) |
ES (1) | ES2141069T3 (en) |
RU (1) | RU2179408C2 (en) |
Families Citing this family (27)
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DE19814371A1 (en) * | 1998-03-31 | 1999-10-14 | Pulsion Verwaltungs Gmbh & Co | Method for in-vivo determination of the compliance function and the systemic blood flow of a living being and device for carrying out the method |
IT1315206B1 (en) | 1999-04-27 | 2003-02-03 | Salvatore Romano | METHOD AND APPARATUS FOR MEASURING HEART RATE. |
DE60103360T2 (en) | 2001-03-01 | 2005-06-02 | Pulsion Medical Systems Ag | Device, computer program and central vein catheter for hemodynamic monitoring |
DE10260762A1 (en) * | 2002-12-23 | 2004-07-22 | Pulsion Medical Systems Ag | Device for determining cardiovascular parameters |
ITRM20030117A1 (en) * | 2003-03-17 | 2004-09-18 | Matteo Bonan | AUTOMATED METHOD OF DISCRIMINATION OF HEART RATE. |
US7422562B2 (en) | 2003-12-05 | 2008-09-09 | Edwards Lifesciences | Real-time measurement of ventricular stroke volume variations by continuous arterial pulse contour analysis |
US7220230B2 (en) | 2003-12-05 | 2007-05-22 | Edwards Lifesciences Corporation | Pressure-based system and method for determining cardiac stroke volume |
US7452333B2 (en) | 2003-12-05 | 2008-11-18 | Edwards Lifesciences Corporation | Arterial pressure-based, automatic determination of a cardiovascular parameter |
DE102004024334A1 (en) * | 2004-05-17 | 2005-12-22 | Pulsion Medical Systems Ag | Device for determining a hemodynamic parameter |
DE102004024335A1 (en) * | 2004-05-17 | 2005-12-15 | Pulsion Medical Systems Ag | Device for determining the transition between systole and diastole |
JP4629430B2 (en) * | 2004-12-28 | 2011-02-09 | フクダ電子株式会社 | Vascular endothelial function measuring device |
EP1884189A1 (en) | 2006-08-03 | 2008-02-06 | Pulsion Medical Systems AG | Apparatus and method for determining a physiologic parameter of a patient applying fourier transformation |
EP2087836B1 (en) | 2008-02-07 | 2012-04-04 | Pulsion Medical Systems AG | Apparatus and method for determining a physiological parameter |
EP2346392A1 (en) * | 2008-08-26 | 2011-07-27 | Cardiac Pacemakers, Inc. | Cardiac output estimation using pulmonary artery pressure |
DE102008055952A1 (en) | 2008-09-04 | 2010-03-25 | Pulsion Medical Systems Ag | Optical measuring catheter for thermodilution measurement and pulse contour analysis |
EP2281504A1 (en) | 2009-08-04 | 2011-02-09 | Pulsion Medical Systems AG | Apparatus and method for determining a physiological parameter |
DE102011114666A1 (en) | 2011-09-30 | 2013-04-04 | Pulsion Medical Systems Se | Device for hemodynamic monitoring |
CN104323768B (en) * | 2012-11-20 | 2017-03-29 | 深圳市理邦精密仪器股份有限公司 | A kind of parameter calibrating method of cardiac output continuous monitoring |
CN102908134B (en) * | 2012-11-20 | 2015-03-18 | 深圳市理邦精密仪器股份有限公司 | Parameter calibration method and parameter calibration system for continuously monitoring cardiac output |
CN104871161A (en) * | 2012-12-18 | 2015-08-26 | 皇家飞利浦有限公司 | Method and apparatus for simulating blood flow under patient-specific boundary conditions derived from an estimated cardiac ejection output |
US9949696B2 (en) * | 2013-03-14 | 2018-04-24 | Tensys Medical, Inc. | Apparatus and methods for computing cardiac output of a living subject via applanation tonometry |
EP3019076B1 (en) * | 2013-07-08 | 2021-03-17 | Edwards Lifesciences Corporation | Arterial pressure-based determination of cardiovascular parameters |
JP6367016B2 (en) * | 2014-06-09 | 2018-08-01 | 潤一郎 橋本 | Evaluation of renal function based on aortic blood flow waveform analysis |
JP6878589B2 (en) | 2016-12-15 | 2021-05-26 | バクスター・インターナショナル・インコーポレイテッドBaxter International Incorp0Rated | Systems and methods for monitoring and determining patient parameters from sensed venous waveforms |
RU173957U1 (en) * | 2017-01-10 | 2017-09-21 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Самарский государственный медицинский университет" Министерства здравоохранения Российской Федерации | Device for determining the index of elasticity of arterial vessels |
WO2019211210A1 (en) * | 2018-04-30 | 2019-11-07 | Philips Medizin Systeme Böblingen Gmbh | Method for determining a cardiac stroke volume |
US11039754B2 (en) | 2018-05-14 | 2021-06-22 | Baxter International Inc. | System and method for monitoring and determining patient parameters from sensed venous waveform |
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JPS6335238A (en) * | 1986-07-29 | 1988-02-15 | 日本光電工業株式会社 | Apparatus for meauring time constant characteristic of terminal blood vessel |
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NL9100150A (en) | 1991-01-29 | 1992-08-17 | Tno | METHOD FOR DETERMINING THE BATTLE VOLUME AND THE HEART MINUTE VOLUME OF THE HUMAN HEART. |
US5535753A (en) | 1994-10-04 | 1996-07-16 | Rutgers University | Apparatus and methods for the noninvasive measurement of cardiovascular system parameters |
DE19814371A1 (en) * | 1998-03-31 | 1999-10-14 | Pulsion Verwaltungs Gmbh & Co | Method for in-vivo determination of the compliance function and the systemic blood flow of a living being and device for carrying out the method |
-
1998
- 1998-03-31 DE DE19814371A patent/DE19814371A1/en not_active Ceased
-
1999
- 1999-03-22 EP EP99105772A patent/EP0947941B1/en not_active Expired - Lifetime
- 1999-03-22 ES ES99105772T patent/ES2141069T3/en not_active Expired - Lifetime
- 1999-03-22 DE DE69908015T patent/DE69908015T2/en not_active Expired - Lifetime
- 1999-03-25 CA CA002266883A patent/CA2266883C/en not_active Expired - Fee Related
- 1999-03-30 RU RU99106197/14A patent/RU2179408C2/en not_active IP Right Cessation
- 1999-03-30 CN CNB991058917A patent/CN1188801C/en not_active Expired - Lifetime
- 1999-03-30 KR KR1019990011000A patent/KR100331093B1/en not_active IP Right Cessation
- 1999-03-31 JP JP09357199A patent/JP3397716B2/en not_active Expired - Fee Related
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