METHOD AND DEVICE FOR DETECTING A CRITICAL HEMODYNAMIC EVENT OF A PATIENT
First Claim
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1. A method for risk assessment of a critical hemodynamic event of a patient, comprising the steps of:
- measuring a set of values of physiological parameters, said physiological parameters including heart rate (HR) and pulse arrival time (PAT), wherein said set of values includes a heart rate (HR) value and a pulse arrival time (PAT) value, andperforming a risk assessment by a calculating device, said risk assessment including the allocation of a representation of the measured set of values as a two-dimensional vector {right arrow over (R)}(t) in a two-dimensional vector space to a risk level representing the risk of the occurrence of a critical hemodynamic event.Wherein a first dimension of the two-dimensional vector represents the heart rate (HR) value and a second dimension of the two-dimensional vector represents the pulse arrival time (PAT) value,Wherein the allocation is based on a combination of the heart rate (HR) value and the pulse arrival time (PAT) value in the vector, which combination represents the risk, andDisplaying the vector {right arrow over (R)}(t) within the vector space.
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Abstract
The invention relates to a method and a device for detecting a critical physiological state of a patient, especially for detecting a critical hemodynamic event. A set of values of physiological parameters is measured, including the heart rate and the pulse arrival time. On the basis of these measurements, a risk assessment is performed including the allocation of a representation of the measured set of values as a vector in a vector space to a risk level representing the risk of the occurrence of a critical hemodynamic event.
23 Citations
15 Claims
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1. A method for risk assessment of a critical hemodynamic event of a patient, comprising the steps of:
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measuring a set of values of physiological parameters, said physiological parameters including heart rate (HR) and pulse arrival time (PAT), wherein said set of values includes a heart rate (HR) value and a pulse arrival time (PAT) value, and performing a risk assessment by a calculating device, said risk assessment including the allocation of a representation of the measured set of values as a two-dimensional vector {right arrow over (R)}(t) in a two-dimensional vector space to a risk level representing the risk of the occurrence of a critical hemodynamic event. Wherein a first dimension of the two-dimensional vector represents the heart rate (HR) value and a second dimension of the two-dimensional vector represents the pulse arrival time (PAT) value, Wherein the allocation is based on a combination of the heart rate (HR) value and the pulse arrival time (PAT) value in the vector, which combination represents the risk, and Displaying the vector {right arrow over (R)}(t) within the vector space. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15)
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3. (canceled)
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10. A device for risk assessment of a critical hemodynamic event of a patient, comprising:
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sensors for measuring a set of values of physiological parameters, said physiological parameters including heart rate (HR) and pulse arrival time (PAT), wherein said set of values includes a heart rate (HR) value and a pulse arrival time (PAT) value and a calculating device for processing the measured values, said calculating device being provided to performing a risk assessment including the allocation of a representation of the measured set of values as a two-dimensional vector {right arrow over (R)}(t) in a two-dimensional vector space to a risk level representing the risk of the occurrence of a critical hemodynamic event Wherein a first dimension of the two-dimensional vector represents the heart rate (HR) value and a second dimension of the two-dimensional vector represents the pulse arrival time (PAT) value, Wherein the allocation is based on a combination of the heart rate (HR) value and the pulse arrival time (PAT) value in the vector, which combination represents the risk; A display adapted to display the vector {right arrow over (R)}(t) within the vector space.
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Specification