Method and apparatus for analyzing cardiac rhythm during CPR

A technology for analyzing steps and time series, applied in application, electrotherapy, electrocardiography, etc., can solve problems such as not providing

Active Publication Date: 2015-02-18
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Finally, International Publication WO2006 / 015348 A2 entitled "DETECTING ARTIFACT SIGNALS CAUSED BY CPR OR PATIENT MOTION" describes a method for detecting the presence of CPR artifacts in ECG signals, but does not provide Accurate ECG attempts
None of these prior art techniques can provide a satisfactorily accurate ECG from which a shock decision can be made

Method used

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  • Method and apparatus for analyzing cardiac rhythm during CPR
  • Method and apparatus for analyzing cardiac rhythm during CPR
  • Method and apparatus for analyzing cardiac rhythm during CPR

Examples

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Embodiment Construction

[0028] Now turning to the attached image, figure 2 An exemplary 23 second ECG strip from a subject patient whose underlying heart rate is VF is illustrated. The first half (left hand side 50) of the waveform was recorded during CPR and the second half (right hand side 60) was recorded after CPR had been paused, ie, without chest compression artifacts on the ECG data. It can be seen that during CPR on the left hand side 50 the underlying VF rhythm is obscured by the chest compression artifact induced on the ECG. A prior art shock advisory algorithm applied to the left hand side 50 may evaluate a CPR artifact as a regular ECG rhythm and incorrectly decide not to advise a shock. This situation is in contrast to the evaluation of the right hand 60 waveform without CPR artifacts. There, the shock advisory algorithm accurately detects the VF rhythm and recommends a shock appropriately. therefore, figure 2 The problem of obtaining accurate ECG readings during CPR compressions p...

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Abstract

A diagnostic medical device (900) is described which incorporates an improved ECG analysis algorithm (600, 800) that identifies an arrhythmia treatable by a defibrillation shock, wherein the identification can occur even in the presence of underlying CPR artifact. The analysis algorithm allows for a shorter interval between the application of CPR compressions and the delivery of electrotherapy, and thus increases the likelihood of successful resuscitation. The medical device may also include a defibrillating electrotherapy circuit (920).

Description

technical field [0001] The present invention generally relates to an improved method for monitoring the heart rhythm of a subject during the application of cardiac resuscitation (CPR). More specifically, the present invention relates to a medical device incorporating an improved diagnostic algorithm that analyzes patient physiological data during CPR and determines whether an electrotherapy shock is indicated. If the device is a defibrillator, the diagnostic algorithm provides guidance to the user and / or controls electrotherapy circuitry of the device based on the determination. Background technique [0002] Sudden cardiac arrest (SCA) is the leading cause of death in the United States. In approximately 40% of patients with sudden cardiac arrest (SCA), the initial cardiac rhythm observed is ventricular fibrillation (VF). CPR is the protocol treatment for SCA that includes providing cycles of chest compressions and ventilations to the patient. Defibrillation was inserted b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0402A61N1/39A61B5/363
CPCA61N1/3925A61B5/04012A61B5/7217A61B5/0464A61N1/39A61B5/316A61B5/363A61N1/39044A61B5/346A61N1/3987
Inventor S·巴巴埃萨德赫S·H·周
Owner KONINKLJIJKE PHILIPS NV
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