Systems and methods for exploiting pulmonary artery pressure obtained from an implantable sensor to detect cardiac rhythm irregularities
First Claim
1. A method for use with an implantable pulmonary artery pressure sensor for implant within a patient, the method comprising:
- sensing a pulmonary artery pressure (PAP) signal representative of variations in PAP occurring during cardiac cycles of the patient;
detecting intervals within the PAP signal corresponding to durations of the cardiac cycles;
detecting one or more cardiac rhythm irregularities, including premature contractions, based on the intervals within the PAP signal, anddelivering cardiac therapy to the patient in response to the detection of an irregularity.
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Abstract
Techniques are provided for use with a pulmonary artery pressure (PAP) monitor having an implantable PAP sensor. In one example, a PAP signal is sensed that is representative of beat-by-beat variations in PAP occurring during individual cardiac cycles of the patient. The PAP monitor detects intervals within the signal corresponding to the durations of cardiac cycles, then detects cardiac rhythm irregularities based on the intervals. For example, the PAP monitor can detect and distinguish atrial fibrillation, ventricular fibrillation and ventricular tachycardia based on the stability of the intervals of the PAP signal along with other information such as ventricular rate. The PAP monitor can also detect and distinguish premature contractions based on durations of the intervals. Examples where the PAP monitor is a component of an implantable cardiac rhythm management device (CRMD) are also provided.
59 Citations
25 Claims
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1. A method for use with an implantable pulmonary artery pressure sensor for implant within a patient, the method comprising:
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sensing a pulmonary artery pressure (PAP) signal representative of variations in PAP occurring during cardiac cycles of the patient; detecting intervals within the PAP signal corresponding to durations of the cardiac cycles; detecting one or more cardiac rhythm irregularities, including premature contractions, based on the intervals within the PAP signal, and delivering cardiac therapy to the patient in response to the detection of an irregularity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for use with an implantable pulmonary artery pressure sensor for implant within a patient, the system comprising:
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a pulmonary artery pressure (PAP) signal input system operative to receive PAP signals from the PAP sensor wherein the PAP signal is representative of variations in PAP occurring during cardiac cycles of the patient; a PAP interval detector operative to detect intervals within the PAP signal corresponding to durations of the cardiac cycles; a PAP interval-based cardiac rhythm irregularity detector operative to detect a cardiac rhythm irregularity including premature contractions, based on the intervals within the PAP signal; and a pulse generator coupled to the PAP interval-based cardiac rhythm irregularity detector, the pulse generator being adapted to deliver cardiac therapy to the patient in response to the detection of a rhythm irregularity. - View Dependent Claims (23, 24)
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25. A system for use with an implantable pulmonary artery pressure sensor for implant within a patient, the system comprising:
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means for sensing a pulmonary artery pressure (PAP) signal representative of variations in PAP occurring during cardiac cycles of the patient; means for detecting intervals within the PAP signal corresponding to durations of the cardiac cycles; means for detecting a cardiac rhythm irregularity, including premature contractions, based on the intervals within the PAP signal; and means for delivering cardiac therapy to the patient in response to the detection of a cardiac rhythm irregularity.
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Specification