Method and apparatus to detect and monitor the frequency of obstructive sleep apnea
First Claim
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1. A method of detecting and monitoring obstructive sleep apnea, comprising:
- measuring an intracardiac impedance to detect a change in the intracardiac impedance;
measuring an amount of movement of a patient; and
determining the presence of obstructive sleep apnea based upon the change in the intracardiac impedance and the movement of the patient.
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Abstract
The present invention provides a method and apparatus for detecting and monitoring obstructive sleep apnea. The apparatus includes an intracardiac impedance sensor to measure intracardiac impedance, a movement sensor to measure an amount of movement of a patient, and a controller operatively coupled to said intracardiac impedance sensor and said movement sensor, said controller adapted to receive at least one of an intracardiac impedance and the amount of movement of the patient and detect obstructive sleep apnea based upon said intracardiac impedance and said movement.
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Citations
21 Claims
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1. A method of detecting and monitoring obstructive sleep apnea, comprising:
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measuring an intracardiac impedance to detect a change in the intracardiac impedance;
measuring an amount of movement of a patient; and
determining the presence of obstructive sleep apnea based upon the change in the intracardiac impedance and the movement of the patient. - View Dependent Claims (2, 3, 4)
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5. A method of detecting and monitoring obstructive sleep apnea, comprising:
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measuring impedance minute ventilation to detect a change in the impedance minute ventilation;
measuring an amount of movement of a patient; and
determining the presence of obstructive sleep apnea based upon the change in the impedance minute ventilation and the movement of the patient.
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- 8. A method of claim 8, wherein measuring the amount of movement of the patient further comprises detecting a low amount of movement of the patient.
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9. A method of detecting and monitoring obstructive sleep apnea, comprising:
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detecting sinus tachycardia;
measuring an atrial-ventricular conduction to detect a change in the atrial-ventricular conduction; and
determining the presence of obstructive sleep apnea based upon detecting sinus tachycardia and the change in the atrial-ventricular conduction.
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11. A medical device for detecting and monitoring obstructive sleep apnea, comprising:
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means for measuring an intracardiac impedance to detect a change in the intracardiac impedance;
means for measuring an amount of movement of a patient; and
means for determining the presence of obstructive sleep apnea based upon the change in the intracardiac impedance and the movement of the patient.
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12. A medical device for detecting and monitoring obstructive sleep apnea, comprising:
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means for measuring the intrathoracic impedance to detect a change in the intrathoracic impedance; and
means for determining the presence of obstructive sleep apnea based upon the change in the intrathoracic impedance. - View Dependent Claims (10)
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13. A medical device for detecting and monitoring obstructive sleep apnea, comprising:
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means for measuring impedance minute ventilation to detect a change in the impedance minute ventilation;
means for measuring an amount of movement of a patient; and
means for determining the presence of obstructive sleep apnea based upon the change in the impedance minute ventilation and the movement of the patient.
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14. A medical device for detecting and monitoring obstructive sleep apnea, comprising:
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means for detecting sinus tachycardia;
means for measuring an atrial-ventricular conduction to detect a change in the atrial-ventricular conduction;
means for determining the presence of obstructive sleep apnea based upon detecting sinus tachycardia and the change in the atrial-ventricular conduction.
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- 18. The medical device of claim 18, further comprising an electrical sensor operatively coupled to said controller to measure electrical activity in a heart, said controller adapted to receive the electrical activity and to detect said obstructive sleep apnea based upon said electrical activity.
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19. The medical device of claim 22, wherein the electrical sensor detects cardiac depolarizations.
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20. The medical device of claim 22, wherein the electrical sensor comprises an electrical sensing amplifier and at least one of a cardiac electrode and a subcutaneous electrode.
Specification