System and method for monitoring cardiac output, flow balance, and performance parameters

Abstract

A system for measuring of cardiac output and cardiac performance parameters based on a cardiac blood flow balance parameter between a right chamber of the heart and a left chamber of the heart, includes a sensor device for measuring one of blood pressure and blood flow rate and blood constituent concentration of a patient so as to generate an arterial pulse signal. A processing unit is responsive to the arterial pulse signal for generating a full arterial pulse signal, an arterio-venous pulse signal, and a balance parameter. A computational device is responsive to the balance parameter for further generating cardiac output and a set of cardiac performance parameters. A display station device is responsive to the set of physiological parameters from the computational device for displaying meaningful information.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a non-provisional application which claims the benefits of provisional application Ser. No. 61 / 700,892 filed on Sep. 14, 2012.BACKGROUND OF THE INVENTION[0002]1. Technical Field[0003]This invention relates generally to methods, devices, and systems used in the field of cardiovascular medicine for clinically assessing of a patient's health condition. More particularly, it relates to a new and improved system and method for monitoring cardiac blood flow balance between the right and left heart chambers based on arterial pulse waveforms representing blood pressure or flow or constituent concentration per cardiac cycle.[0004]The description below is merely provided for general background information and for assisting in understanding the technical field to which the present invention is related. As is generally known in the art, the circulatory system in human beings is responsible for transporting oxygen and other nutrien...

AI Technical Summary

Benefits of technology

[0026]In view of the foregoing background, it is therefore an object of the present invention to provide a system and method for measuring of cardiac blood flow balance parameter between the left chamber of the heart and the right chamber of the heart of improved design and performance. It is another object of the present invention to provide a system and method for clinically assessing of a patient's health condition based upon a balance parameter obtained by measured arterial pulse signal and assessing of the patient's health condition based upon the morphology of the balance signal. It is still another object of the present invention to provide a system and method for generating a full arterial pulse (FAP) signal, defined as the measured arterial pulse signal without the effect of atrial diastolic blood flow demand factor. The full arterial pulse (FAP) is defined by the measured arterial pulse signal without the effect of atrial diastolic blood flow demand, simulating an added component of arterio-venous (AV) pulse signal so as to result in a full arterial pulse signal (i.e. representing ventricular supply factor without atrial interaction effects). It is still yet another object of the present invention to provide a system and method for measuring of cardiac blood flow balance parameter which utilizes system identification techniques for modeling a transfer function relationship between a peripheral artery AV pulse or FAP signal and an aortic AV pulse or FAP signal. It is still yet another object of the present invention to provide a system and method for measuring of cardiac blood flow balance parameter which utilizes system identification techniques for modeling a transfer function relationship between a pulmonary artery peripheral branch AV pulse or FAP signal and the pulmonary artery AV pulse or FAP signal.

Problems solved by technology

Often the performance of the left side of the vascular system is analyzed separately from the right side, which yields weak conclusions that cannot be generalized.

Traditional models that failed to take into account the simultaneous effects of the left and right heart cycles tend to bias the attribution of the dynamics it models to one side over the other, and therefore fail to represent the true dynamics fully.

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