METHOD AND DEVICE TO MONITOR PATIENTS WITH KIDNEY DISEASE
First Claim
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1. A medical system comprising:
- a medical device including at least one of an electromyogram sensor and an electrocardiogram sensor for detecting a change in muscle or nerve activity of a subject and for producing at least one output electrical signal based on the change in muscle or nerve activity as detected by at least one received electrical signal, the output electrical signal being indicative of a serum potassium concentration of the subject;
a processor for applying a forward computational procedure to the at least one received electrical signal to generate a risk score for hyperkalemia, hypokalemia or arrhythmia; and
a communication device indicating a condition of hyperkalemia, hypokalemia or arrhythmia of the subject based on the risk score.
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Abstract
A medical monitoring device for monitoring electrical signals from the body of a subject is described. The medical monitoring device monitors electrical signals originating from a cardiac cycle of the subject and associates each cardiac cycle with a time index. The medical monitoring device applies a forward computational procedure to generate a risk score indicative of hyperkalemia, hypokalemia or arrhythmia of the subject. The medical monitoring device can adjust the forward computational procedure based upon clinical data obtained from the subject.
96 Citations
27 Claims
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1. A medical system comprising:
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a medical device including at least one of an electromyogram sensor and an electrocardiogram sensor for detecting a change in muscle or nerve activity of a subject and for producing at least one output electrical signal based on the change in muscle or nerve activity as detected by at least one received electrical signal, the output electrical signal being indicative of a serum potassium concentration of the subject; a processor for applying a forward computational procedure to the at least one received electrical signal to generate a risk score for hyperkalemia, hypokalemia or arrhythmia; and a communication device indicating a condition of hyperkalemia, hypokalemia or arrhythmia of the subject based on the risk score. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A medical system comprising:
a medical device including at least one of an electromyogram sensor and an electrocardiogram sensor for detecting a change in muscle or nerve activity of a subject and for producing at least one output electrical signal based on the change in muscle or nerve activity as detected by at least one received electrical signal, the output electrical signal being indicative of a serum potassium concentration of the subject;
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26. A method comprising:
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applying to a subject one or more pulse sets generated by a pulse generator; connecting at least one electromyogram sensor to the subject to receive at least one electrical signal from the subject in response to the one or more pulse sets; generating an output from the at least one electromyogram sensor in response to the at least one electrical signal, the output being indicative of a level of serum potassium concentration of the subject; applying a forward computational procedure to the output to generate a risk score; and issuing an alert indicating a condition of hyperkalemia, hypokalemia or arrhythmia of the subject based on the risk score.
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27. A method comprising:
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connecting at least one electrocardiogram sensor to a subject to receive one or more electrocardiogram features; applying an electrocardiogram algorithm to the one or more electrocardiogram features to obtain an indicator for serum potassium concentration of the subject, wherein the electrocardiogram algorithm includes one or more of the following operational rules;
i) the output on the serum potassium concentration being a function of the R-wave amplitude;
ii) the output on the serum potassium concentration being a function of the T-wave amplitude;
iii) the output on the serum potassium concentration being a function of the T/R ratio; and
iv) the output on the serum potassium concentration being a function of the T-wave flatness;applying a forward computational procedure to the output to generate a risk score; and issuing an alert indicating a condition of hyperkalemia, hypokalemia or arrhythmia of the subject based on the risk score.
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Specification