Blood volume redistribution therapy for heart failure
First Claim
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1. A system, comprising:
- a first fluid monitor configured to monitor fluid in a pulmonary region of a patient and provide a pulmonary fluid status;
a second fluid monitor configured to monitor fluid in a non-pulmonary region of the patient and provide a non-pulmonary fluid status;
a therapy delivery system configured to vasodilate vasculature in the non-pulmonary region;
a controller operably connected to the first and second fluid monitors and to the therapy delivery system, the controller configured to determine, using the pulmonary fluid status and the non-pulmonary fluid status, that an elevated fluid status is attributable to fluid distribution toward the pulmonary region rather than to an increase in total blood volume, and to control the therapy delivery system to deliver a therapy to vasodilate vasculature in the non-pulmonary region to redistribute fluid from the pulmonary region to the non-pulmonary region.
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Abstract
A first fluid status indicator of a pulmonary fluid status associated with pulmonary edema and a second fluid status indicator of a non-pulmonary fluid status can be used to provide an alert or to control a therapy for pulmonary edema. Additionally, intermittent cardiac blood volume redistribution therapy can be used to provide cardiac conditioning in heart failure patients.
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Citations
20 Claims
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1. A system, comprising:
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a first fluid monitor configured to monitor fluid in a pulmonary region of a patient and provide a pulmonary fluid status; a second fluid monitor configured to monitor fluid in a non-pulmonary region of the patient and provide a non-pulmonary fluid status; a therapy delivery system configured to vasodilate vasculature in the non-pulmonary region; a controller operably connected to the first and second fluid monitors and to the therapy delivery system, the controller configured to determine, using the pulmonary fluid status and the non-pulmonary fluid status, that an elevated fluid status is attributable to fluid distribution toward the pulmonary region rather than to an increase in total blood volume, and to control the therapy delivery system to deliver a therapy to vasodilate vasculature in the non-pulmonary region to redistribute fluid from the pulmonary region to the non-pulmonary region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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monitoring fluid in a pulmonary region of a patient to provide a pulmonary fluid status; monitoring fluid in a non-pulmonary region of the patient to provide a non-pulmonary fluid status, wherein monitoring fluid in the non-pulmonary region includes monitoring fluid in at least one of a splanchnic region or a leg region of the patient; determining, using the pulmonary fluid status and the non-pulmonary fluid status, that an elevated pulmonary fluid status is attributable to fluid distribution toward the pulmonary region rather than to an increase in total blood volume; delivering a therapy to vasodilate vasculature in the non-pulmonary region to redistribute fluid from the pulmonary region to the non-pulmonary region. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification