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Template-based analysis and classification of cardiovascular waveforms

A waveform and template technology, applied in cardiac catheterization, vascular assessment, catheterization, etc., can solve problems affecting waveform shape, signal imperfection, etc.

Pending Publication Date: 2019-02-05
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the signals obtained through ECG and other equipment are not perfect, noise and artifacts may be introduced, which can also affect the waveform shape

Method used

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  • Template-based analysis and classification of cardiovascular waveforms
  • Template-based analysis and classification of cardiovascular waveforms
  • Template-based analysis and classification of cardiovascular waveforms

Examples

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Embodiment Construction

[0020] Cardiovascular waveforms, such as those representing ABP, PAP, and / or CVP, and signals from plethysmographs ("PLETH") may be affected by physiological changes such as ectopic beats and / or arrhythmias. In particular, the electrical activity in the patient's heart (eg, as measured by ECG) may affect the shape of various hemodynamic waveforms. Existing algorithms for filtering and evaluating waveform quality sometimes misclassify atypical electrical activity as noise or artifacts when in fact the activity may demonstrate cardiovascular abnormalities. For example, some algorithms compare electrical and / or hemodynamic waveforms to templates of normal and abnormal waveforms. However, many abnormal waveforms may not match existing templates and thus may lead to noisy classifications when in fact there are true cardiovascular abnormalities. Therefore, there is a need in the art to analyze and classify cardiovascular waveforms in a manner that better identifies cardiovascular a...

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PUM

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Abstract

In various embodiments, a first classification assigned to a periodic component of an electrical waveform that represents electrical activity in a patient's heart may be identified (302). A corresponding periodic component of a hemodynamic waveform that represents hemodynamic activity in the patient's cardiovascular system may be analyzed (306, 318, 328). The corresponding periodic component may be causally related to the periodic component of the electrical waveform. Based on the analysis, the previously-assigned classification may be assigned (312, 324) to the corresponding periodic component of the hemodynamic waveform in response to a determination, based on the analyzing, that the previously-assigned classification also applies to the corresponding periodic component. In a database (130) of hemodynamic templates, a hemodynamic template associated with the previously-assigned classification may be updated (314) to include one or more features of the corresponding periodic componentof the hemodynamic waveform.

Description

technical field [0001] The present disclosure relates generally to healthcare. More specifically, but not exclusively, various methods and apparatus disclosed herein relate to template-based analysis and classification of cardiovascular waveforms. Background technique [0002] Cardiovascular waveforms and plethysmography representing arterial blood pressure ("ABP"), pulmonary arterial pressure ("PAP"), central venous pressure ("CVP") may be affected by physiological changes such as ectopic beats and / or arrhythmias. In particular, the electrical activity in the patient's heart (eg, as measured by an electrocardiogram ("ECG")) can affect the shape of these waveforms. Doctors can then analyze the shape of these waveforms to identify abnormalities in the patient's heartbeat, which require further investigation. However, the signals obtained through ECG and other equipment are not perfect, and noise and artifacts can be introduced, which can also affect the waveform shape. The...

Claims

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Application Information

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IPC IPC(8): A61B5/0456A61B5/0452A61B5/00A61B5/04A61B5/0215A61B5/0295A61B5/0468A61B5/0472A61B5/352A61B5/364A61B5/366
CPCA61B5/7246A61B5/7264A61B5/0215A61B5/0295A61B5/7221G16H50/20A61B5/316A61B5/35A61B5/364A61B5/366A61B5/352A61B5/346A61B5/021A61B5/02416
Inventor E·高希C·M·波特斯布兰东R·E·格雷格
Owner KONINKLJIJKE PHILIPS NV
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