Cardiac disease treatment system

• US 8,282,563 B2
• Filed: 11/18/2004
• Issued: 10/09/2012
• Est. Priority Date: 11/18/2004
• Status: Active Grant

• Current Assignee: Japan Health Sciences Foundation
• Original Assignee: Japan Health Sciences Foundation
• Inventors: Sugimachi, Masaru, Sunagawa, Kenji, Uemura, Kazunori, Kamiya, Atsunori
• Primary Examiner(s): Natnithithadha, Navin
• Assistant Examiner(s): Reddy, Sunita
• Application Number:
  US11/719,400
• Publication Number:
  US 20090221923A1
• Time in Patent Office: 2,882 Days
• Field of Search: 600/526, 600481-507, 600300-301, 604/890.1, 604/891.1, 604/31, 604 65- 67, 604/503, 604/505
• US Class Current: 600/485
• CPC Class Codes: A61B 5/02028 Determining haemodynamic parameters not otherwise provided for, e.g. cardiac contractility or left ventricular ejection fraction
• CPC Class Codes: A61B 5/02158 provided with two or more sensor elements
• CPC Class Codes: A61B 5/029 Measuring or recording blood output from the heart, e.g. minute volume A61B8/065 takes precedence
• CPC Class Codes: A61M 2230/30 Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

Problems

To provide a cardiac disease treatment system for accurately diagnosing the functional cause of an abnormality of a cardiac disease by analyzing the hemodynamic state of a patient, automatically performing medication in accordance with the diagnosis result, and treating the cardiac disease.

Means for solving problems

The cardiac disease treatment system is characterized by comprising input means (2) for inputting the cardiac output value of the patient, the left atrial pressure value and/or the right atrial pressure value, first calculating means (31) for calculating the pumping ability value of the left heart or the right heart from the inputted cardiac output and the left or right atrial pressure value, first comparing means (41) for comparing the pumping ability value of the left heart or the right heart with a target pumping ability value, and first medicating means (51) for medicating the patient in accordance with the result of the comparison by the first comparing means (41).

Claims

1. A cardiac disease treatment system comprising:

an input means inputting a cardiac output value, a left atrial pressure value, and/or a right atrial pressure value of a patient;

a first calculation means calculating a pumping ability value of the left heart or a pumping ability value of the right heart from the cardiac output value, the left atrial pressure value, and the right atrial pressure value which are input from the input means;

a first comparison means comparing calculated values of the pumping ability value of the left heart and/or the pumping ability value of the right heart and target pumping ability values; and

a first dosing means administering drugs to the patient according to comparison results in the first comparison means.

2. The cardiac disease treatment system according to claim 1, wherein the first calculation means uses equation 1 and/or equation 2 to calculate the pumping ability value of the left heart and/or the pumping ability value of the right heart from the cardiac output value, the left atrial pressure value, and/or the right atrial pressure value input by the input means;

(cardiac output)=(left cardiac pumping capability)×

{Log((left atrial pressure)A)+B} 

 

Equation 1

where A and B are constants;

(cardiac output)=(right cardiac pumping capability)×

{Log((right atrial pressure)C)+D} 

 

Equation 2

where C and D are constants.

3. The cardiac disease treatment system according to claim 1, further comprising:

a first target decision means calculating a target pumping ability value of the left heart and/or a target pumping ability value of the right heart as the target pumping ability value from the target cardiac output value, the target left atrial pressure value, and/or the target right atrial pressure value.

4. The cardiac disease treatment system according to claim 3, wherein the first target decision means uses equation 3 and equation 4 to calculate the target pumping ability value of the left heart and/or the pumping ability value of the right heart from the target cardiac output value, the target left atrial pressure value, and/or the right atrial pressure value:

(target left cardiac pumping capability)=(target cardiac output)/{Log((target left atrial pressure)A)+B} 

 

Equation 3

where A and B are constants;

(target right cardiac pumping capability)=(target cardiac output value)/{Log((target right atrial pressure)C)+D} 

 

Equation 4

where C and D are constants.

5. The cardiac disease treatment system according to claim 1, further comprising:

a display means continuously displaying each of the calculated values calculated by the calculation means in chronological order.

6. The cardiac disease treatment system according to claim 1, wherein the cardiac output value is measured by a Swan-Ganz catheter or calculated from a diastolic time constant of arterial blood pressure waveform.

7. The cardiac disease treatment system according to claim 1, wherein the left atrial pressure value is directly measured by a catheter or continuously estimated from diastolic pressure values of pulmonary capillary wedge pressure or pulmonary arterial pressure which are measured by a Swan-Ganz catheter.

12. The cardiac disease treatment system according to claim 1, further comprising:

a display means continuously displaying each of the calculated values calculated by the calculation means in chronological order.

8. A cardiac disease treatment system comprising:

an input means inputting a cardiac output value, a left atrial pressure value, and a right atrial pressure value of a patient;

a second calculation means calculating an effective circulating blood volume value from the cardiac output value, the left atrial pressure value, and the right atrial pressure value which are input from the input means;

a second comparison means comparing the effective circulating blood volume value calculated by the second calculation means and a target effective circulating blood volume value; and

a second dosing means administering drugs to the patient according to the comparison result in the second comparison means.

9. The cardiac disease treatment system according to claim 8 wherein the second comparison means uses equation 5 to calculate the effective circulating blood volume value from the cardiac output value, the left atrial pressure value, and the right atrial pressure value input by the input means;

10. The cardiac disease treatment system according to claim 8, further comprising:

a second target decision means calculating a target effective circulating blood volume value from the target cardiac output value, the target left atrial pressure value, and the target right atrial pressure value.

11. The cardiac disease treatment system according to claim 10, wherein the second target decision means uses equation 6 to calculate the target effective circulating blood volume value from the target cardiac output value, the target left atrial pressure value, and/or the target right atrial pressure value:

(target effective circulating blood volume)={(target cardiac output)+F(target right atrial pressure)+G(target left atrial pressure)}×

E 

 

Equation 6

where E, F, and G are constants.

13. The cardiac disease treatment system according to claim 8, wherein the cardiac output value is measured by a Swan-Ganz catheter or calculated from a diastolic time constant of arterial blood pressure waveform.

14. The cardiac disease treatment system according to claim 8, wherein the left atrial pressure value is directly measured by a catheter or continuously estimated from diastolic pressure values of pulmonary capillary wedge pressure or pulmonary arterial pressure which are measured by a Swan-Ganz catheter.

15. A cardiac disease treatment system comprising:

an input means inputting a cardiac output value, a right atrial pressure value, and an arterial blood pressure value of a patient;

a third calculation means calculating a vascular resistance value from the cardiac output value, the right atrial pressure value, and the arterial blood pressure value which are input by the input means;

a third comparison means comparing the vascular resistance value calculated by the third calculation means and a target vascular resistance value; and

a third dosing means administering drugs to the patient according to the comparison result in the third comparison means.

16. The cardiac disease treatment system according to claim 15, wherein the third comparison means uses equation 7 to calculate the vascular resistance value from the cardiac output value, the right atrial pressure value, and the arterial blood pressure value input by the input means:

(vascular resistance)={(arterial blood pressure)−

(right atrial pressure)−

H)}/(cardiac output) 

 

Equation 7

where H is a constant.

17. The cardiac disease treatment system according to claim 15, further comprising:

a third target decision means calculating a target vascular resistance value from the target cardiac output value, the target arterial blood pressure value, and the target right atrial pressure value.

18. The cardiac disease treatment system according to claim 17, wherein the third target decision means uses equation 8 to calculate the target vascular resistance value from the target cardiac output value, the target arterial blood pressure value, and the target right atrial pressure value:

(target vascular resistance)={(target arterial blood pressure)−

(target right atrial pressure)−

H}/(target cardiac output) 

 

Equation 8

where H is a constant.

19. The cardiac disease treatment system according to claim 15, further comprising:

a display means continuously displaying each of the calculated values calculated by the calculation means in chronological order.

20. The cardiac disease treatment system according to claim 15, wherein the cardiac output value is measured by a Swan-Ganz catheter or calculated from a diastolic time constant of arterial blood pressure waveform.

21. The cardiac disease treatment system according to claim 15, wherein the left atrial pressure value is directly measured by a catheter or continuously estimated from diastolic pressure values of pulmonary capillary wedge pressure or pulmonary arterial pressure which are measured by a Swan-Ganz catheter.

22. A cardiac disease treatment system that is a combination of two or three of the systems defined in following (i) to (iii),

(i) A cardiac disease treatment system comprising:

an input means inputting a cardiac output value, a left atrial pressure value, and/or a right atrial pressure value of a patient;

a first calculation means calculating a pumping ability value of the left heart or a pumping ability value of the right heart from the cardiac output value, the left atrial pressure value, and the right atrial pressure value which are input from the input means;

a first comparison means comparing calculated values of the pumping ability value of the left heart and/or the pumping ability value of the right heart and target pumping ability values; and

a first dosing means administering drugs to the patient according to comparison results in the first comparison means,

(ii) A cardiac disease treatment system comprising;

an input means inputting a cardiac output value, a left atrial pressure value, and a right atrial pressure value of a patient;

a second calculation means calculating an effective circulating blood volume value from the cardiac output value, the left atrial pressure value, and the right atrial pressure value which are input from the input means;

a second comparison means comparing the effective circulating blood volume value calculated by the second calculation means and a target effective circulating blood volume value; and

a second dosing means administering drugs to the patient according to the comparison result in the second comparison means,

(iii) A cardiac disease treatment system comprising;

an input means inputting a cardiac output value, a right atrial pressure value, and an arterial blood pressure value of a patient;

a third calculation means calculating a vascular resistance value from the cardiac output value, the right atrial pressure value, and the arterial blood pressure value which are input by the input means;

a third comparison means comparing the vascular resistance value calculated by the third calculation means and a target vascular resistance value; and

a third dosing means administering drugs to the patient according to the comparison result in the third comparison means.

23. The cardiac disease treatment system according to claim 22, further comprising:

a display means continuously displaying each of the calculated values calculated by the calculation means in chronological order.

24. The cardiac disease treatment system according to claim 22, wherein the cardiac output value is measured by a Swan-Ganz catheter or calculated from a diastolic time constant of arterial blood pressure waveform.

25. The cardiac disease treatment system according to claim 22, wherein the left atrial pressure value is directly measured by a catheter or continuously estimated from diastolic pressure values of pulmonary capillary wedge pressure or pulmonary arterial pressure which are measured by a Swan-Ganz catheter.