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Ventilation pattern for hemodynamic parameter determination during mechanical ventilation

A technology of hemodynamics and ventilation mode, which is applied in the field of ventilation mode for determination of hemodynamic parameters during mechanical ventilation, can solve the problems of increasing alveolar deflation and increasing the risk of hemodynamics in ventilated patients, and achieves The effect of improving security

Pending Publication Date: 2021-01-22
MAQUET CRITICAL CARE
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Another challenge associated with ventilation patterns that include a pre-inspiratory pause is the relatively long period of low lung pressure, which may increase the tendency for alveolar deflation, which can occur if PEEP is set too low relative to the patient's lung mechanics. most obvious trend
[0008] Another challenge associated with ventilation patterns that include end-inspiratory pauses is the increased risk of adversely affecting the hemodynamics of the ventilated patient due to the relatively longer duration of higher airway and thoracic pressures

Method used

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  • Ventilation pattern for hemodynamic parameter determination during mechanical ventilation
  • Ventilation pattern for hemodynamic parameter determination during mechanical ventilation
  • Ventilation pattern for hemodynamic parameter determination during mechanical ventilation

Examples

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Embodiment Construction

[0050] figure 1 Shown is a respiratory device 1 for providing ventilation therapy to a subject 3 by mechanical ventilation. The respiratory apparatus 1 is configured to vary or modify the effective ventilation of the subject 3 periodically or at intervals for diagnostic purposes while providing adequate general ventilation to the subject. In more detail, the respiratory device 1 is configured to vary the effective ventilation of the subject 3 in order to non-invasively determine one or more parameters related to the subject's hemodynamics, such as the subject's 3 effective lung volume (ELV), cardiac Output (Q), Effective Pulmonary Blood Flow (EPBF) and / or Venous Blood Carbon Dioxide (CvCO2). Preferably, the respiratory device is configured to vary the effective ventilation of the subject according to a cyclic ventilation pattern, which allows continuous determination of the one or more hemodynamic parameters.

[0051] In the illustrated embodiment, the respiratory apparatus ...

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Abstract

A method for changing the effective ventilation of a mechanically ventilated subject (3) to enable or carry out non-invasive determination of hemodynamic parameters is disclosed. The method comprisesa step of ventilating the subject using a ventilation pattern comprising at least one phase of increased ventilation and at least one phase of decreased ventilation, wherein the phase of decreased ventilation comprises at least one prolonged breath (B2; B2', B2'', B2''') including a respiratory pause (IRP). The respiratory pause is initiated when the lung pressure (Palv) of the subject is betweena minimum lung pressure and a maximum lung pressure of the subject during the prolonged breath.

Description

technical field [0001] The present invention relates to a method, computer program and respiratory apparatus for altering the effective ventilation of a mechanically ventilated subject to achieve or perform non-invasive determination of hemodynamic parameters. Background technique [0002] During mechanical ventilation, it is sometimes desirable to actively alter the patient's effective ventilation for diagnostic purposes. For example, changes in effective ventilation can be introduced in order to analyze the response of the patient's respiratory and / or circulatory system to the changes. In this way, important parameters related to the patient's hemodynamics can be determined during ongoing ventilation. [0003] The patient's effective ventilation is often altered to introduce changes in the exhaled CO2 level, which can be used to correlate with, for example, the patient's effective lung volume (ELV), effective pulmonary blood flow (EPBF), cardiac output ( Non-invasive det...

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Application Information

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IPC IPC(8): A61M16/00A61B5/02A61M16/12
CPCA61M16/00A61M16/0833A61M16/12A61M2016/0042A61M2205/502A61M2230/432A61M16/024A61M2205/3331A61M2205/50
Inventor 芒努斯·哈尔巴克
Owner MAQUET CRITICAL CARE
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