Device and method for preventing the acceleration of cardiac arrhythmias
First Claim
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1. A method comprising:
- detecting an arrhythmic condition;
in response to the detecting, delivering a low voltage cardiac stimulus using at least one partially charged capacitor within approximately 2 seconds of an initial detection of the arrhythmic condition;
determining whether the low voltage cardiac stimulus terminated the arrhythmic condition; and
delivering a higher voltage cardiac stimulus if the low voltage cardiac stimulus did not terminate the arrhythmic condition.
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Abstract
An exemplary method includes detecting ventricular fibrillation, delivering a low voltage cardiac stimulus, determining whether the low voltage cardiac stimulus terminated the ventricular fibrillation, and delivering a higher voltage cardiac stimulus if the low voltage cardiac stimulus did not terminate the ventricular fibrillation. In one example, the delivering the low voltage cardiac stimulus occurs within approximately 10 event intervals from the detected onset of ventricular fibrillation; otherwise, delivery of an appropriate higher voltage cardiac stimulus occurs. Other exemplary methods, devices, systems, etc., are also disclosed.
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Citations
20 Claims
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1. A method comprising:
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detecting an arrhythmic condition; in response to the detecting, delivering a low voltage cardiac stimulus using at least one partially charged capacitor within approximately 2 seconds of an initial detection of the arrhythmic condition; determining whether the low voltage cardiac stimulus terminated the arrhythmic condition; and delivering a higher voltage cardiac stimulus if the low voltage cardiac stimulus did not terminate the arrhythmic condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method comprising:
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detecting coarse ventricular fibrillation; delivering a low voltage cardiac stimulus using at least one partially charged capacitor within approximately 10 intervals from the detected onset of the early, coarse ventricular fibrillation; determining whether the low voltage cardiac stimulus terminated the ventricular fibrillation; and delivering a higher voltage cardiac stimulus if the low voltage cardiac stimulus did not terminate the arrhythmic condition. - View Dependent Claims (15, 16, 17)
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18. A device comprising:
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means for detecting an arrhythmic condition; in response to the detecting, means for delivering a low voltage cardiac stimulus using at least one partially charged capacitor within approximately 2 seconds of an initial detection of the arrhythmic condition; means for determining whether the low voltage cardiac stimulus terminated the arrhythmic condition; and means for delivering a higher voltage cardiac stimulus if the low voltage cardiac stimulus did not terminate the arrhythmic condition. - View Dependent Claims (19, 20)
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Specification