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System and method for determining cardiac output

A cardiac output and transducer technology, applied in the field of cardiac output representation, can solve problems such as changes and hemodynamic instability

Inactive Publication Date: 2019-04-02
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, hemodynamic instability (eg, during surgery, or in ICU patients) can cause these ratios to change rapidly over time
This means that measuring flow in the superior vena cava alone cannot be used as a surrogate for CO

Method used

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  • System and method for determining cardiac output
  • System and method for determining cardiac output
  • System and method for determining cardiac output

Examples

Experimental program
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Embodiment Construction

[0047] figure 1 A schematic illustration of an arrangement according to an embodiment of the invention is shown. figure 1 A portion of the heart 1 is schematically illustrated, including the superior vena cava 2 and the inferior vena cava 3 , both of which lead to the right atrium 4 .

[0048] The illustrated arrangement according to the present invention provides a method and system for monitoring cardiac output using a single device inserted into a central venous catheter (CVC) or peripherally inserted central catheter (PICC) line. In the preferred embodiment, the device comprises an elongate body that fits into the lumen of a central venous catheter or peripherally inserted central catheter line and has an ultrasound transducer at the end. By operating the device so that the velocity in both the superior and inferior vena cava can be sampled continuously, CO is monitored.

[0049] In the exemplary embodiment, the main elements include an elongated body 10 with an ultrasou...

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Abstract

The invention relates to determining a representation of cardiac output in a patient. Provided are a method and a system for monitoring a cardiac output using a single device inserted into a Central Venous Catheter (CVC) or Peripheral Inserted Central Catheters (PICC) line. In an embodiment, the device contains an elongated body that fits the lumen of a Central Venous Cava or Peripheral Inserted Central Catheters line and has an ultrasound transducer at the tip. By operating the device such that the velocity in both the Superior Vena Cava and Inferior Vena Cava can be sampled continuously theCO is monitored.

Description

technical field [0001] The present invention relates to systems, methods and software products for determining a representation of cardiac output in a patient. Background technique [0002] Cardiac output (CO) measurement is an important tool in monitoring a patient's hemodynamic status during surgery and during the patient's stay in the Intensive Care Unit (ICU). Cardiac output is the volume of blood pumped by the heart in a given amount of time. Since the blood circulation is a closed system, this can mean the volume of blood pumped by the left ventricle into the aorta, and likewise the volume of blood pumped by the right ventricle into the pulmonary artery, or into the right atrium (venous return) or the volume of blood in the left atrium. [0003] In vitro ultrasound cannot determine CO with sufficient accuracy. Intravascular measurements are required, but there are serious risks involving prolonged intravascular blood flow measurements in the aorta. The pulmonary ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/06A61B8/08A61B8/12A61B8/00A61B8/04
CPCA61B8/04A61B8/065A61B8/0883A61B8/12A61B8/445A61B8/4477A61B8/488A61B8/5215G16H50/20A61B8/4483A61B8/54
Inventor A·范德霍斯特C·F·希欧M·P·J·屈嫩
Owner KONINKLJIJKE PHILIPS NV
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