Method for detecting tachyarrhythmia of a heart by measuring patient activity and partial pressure of blood oxygen
First Claim
1. A method for detecting tachyarrhythmia of a heart comprising the steps of:
- measuring a partial pressure of gases dissolved in blood of a patient and monitoring any changes of said partial pressure;
measuring physical activity of said patient, in whom tachyarrhythmia is to be detected, utilizing an activity sensor; and
utilizing a simultaneous occurrence of a low activity level and presence of a selected change in the measured partial pressure as a criterion for detecting a tachyarrhythmia.
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Abstract
For detecting tachyarrhythmia of the heart, the partial pressure of gases physically dissolved in the blood is measured, preferably the partial oxygen pressure pO2, and a fast variation and/or a variation of the measured partial pressure pO2 that exceeds a prescribed degree is utilized as a criterion for the detection of a tachyarrhythmia. An apparatus for treating tachyarrhythmia of the heart operating according to the above method includes a sensor for identifying the partial pressure of gases dissolved in the blood, an evaluation unit supplied with the sensor output for recognizing rapid changes of the partial pressure or changes of the partial pressure that exceed a prescribed degree, the output of the evaluation unit being connected to circuitry for triggering the tachyarrhythmia treatment.
54 Citations
16 Claims
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1. A method for detecting tachyarrhythmia of a heart comprising the steps of:
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measuring a partial pressure of gases dissolved in blood of a patient and monitoring any changes of said partial pressure; measuring physical activity of said patient, in whom tachyarrhythmia is to be detected, utilizing an activity sensor; and utilizing a simultaneous occurrence of a low activity level and presence of a selected change in the measured partial pressure as a criterion for detecting a tachyarrhythmia. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for detecting tachyarrhythmia of the heart comprising the steps of:
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measuring a partial pressure of gases dissolved in blood in a patient and monitoring any changes of said partial pressure; measuring physical activity of said patient, in whom tachyarrhythmia is to be detected, utilizing an activity sensor; and utilizing a simultaneous occurrence of an unmodified activity level and presence of a selected change in the measured partial pressure as a criterion for the detection of a tachyarrhythmia.
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9. An apparatus for detecting tachyarrhythmia of a heart comprising:
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means for measuring a partial pressure of gases dissolved in blood of a patient and monitoring any changes of said partial pressure; means for measuring a physical activity of said patient, in whom tachyarrhythmia is to be detected, including an activity sensor; and means for detecting a tachyarrhythmia comprising means for utilizing a simultaneous occurrence of a low activity level and presence of a selected change in the measured partial pressure as a criterion for the detection of a tachyarrhythmia. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for detecting tachyarrhythmia of the heart comprising:
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means for measuring a partial pressure of gases dissolved in the blood in a patient and for monitoring any changes of said partial pressure; means for measuring the physical activity of said patient, in whom tachyarrhythmia is to be detected, including an activity sensor; and means for detecting a tachyarrhythmia comprising means for utilizing the simultaneous occurrence of an unmodified activity level and a selected change in the measured partial pressure as a criterion for the detection of a tachyarrhythmia.
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Specification