Hemodynamic status assessment during tachycardia
First Claim
1. A method, comprising:
- sensing, during an event of tachycardia, hemodynamic signals concurrently from at least two spatially separated locations within a patient;
quantifying a spatial relationship between the hemodynamic signals;
determining a state of patient hemodynamics during the tachycardia event based at least in part on the quantified spatial relationship;
selecting one or more anti-tachycardia therapies to treat the tachycardia based at least in part on the determined state of patient hemodynamics; and
delivering the selected one or more anti-tachycardia therapies to treat the tachycardia.
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Abstract
Systems and methods provide for sensing, during an event of tachycardia, hemodynamic signals concurrently from at least two spatially separated locations within a patient, and quantifying a spatial relationship between the hemodynamic signals. Hemodynamic stability or state of the patient during the tachycardia event is determine based at least in part on the quantified spatial relationship. One or more anti-tachycardia therapies to treat the tachycardia may be selected based at least in part on the determined stability or state of patient hemodynamics, and the selected one or more anti-tachycardia therapies may be delivered to treat the tachycardia. The hemodynamic signals may comprise at least two, or a mixed combination, of cardiac impedance signals, cardiac chamber pressure signals, arterial pressure signals, heart sounds; and acceleration signals.
31 Citations
23 Claims
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1. A method, comprising:
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sensing, during an event of tachycardia, hemodynamic signals concurrently from at least two spatially separated locations within a patient; quantifying a spatial relationship between the hemodynamic signals; determining a state of patient hemodynamics during the tachycardia event based at least in part on the quantified spatial relationship; selecting one or more anti-tachycardia therapies to treat the tachycardia based at least in part on the determined state of patient hemodynamics; and delivering the selected one or more anti-tachycardia therapies to treat the tachycardia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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sensing, during an event of tachycardia, hemodynamic signals concurrently from at least two spatially separated locations within a patient; quantifying a spatial relationship between the hemodynamic signals; and determining hemodynamic stability of the patient during the tachycardia event based at least in part on the quantified spatial relationship. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An implantable system, comprising:
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at least two implantable hemodynamic sensors adapted for spatially-separated positioning relative to a patient'"'"'s heart and sensing hemodynamic signals; a lead comprising one or more electrodes; detection circuitry coupled to the lead; energy delivery circuitry coupled to the lead; and a processor coupled to the hemodynamic sensors, lead, detection circuitry, and energy delivery circuitry, the processor configured to sense, during an event of tachycardia, hemodynamic signals concurrently from the hemodynamic sensors, quantify a spatial relationship between the hemodynamic signals, and determine a hemodynamic status of the patient during the tachycardia event based at least in part on the quantified spatial relationship, the processor configured to deliver one or more anti-tachycardia therapies associated with the hemodynamic status of the patient. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification