Ventricular geometric and hemodynamic control by heart rate modulation in lvad therapy
AssigneeMedtronic, Inc.
InventorTroy JACKSON
Life of this patent
Estimating the term…
Abstract
A method of operating an implantable blood pump and a pacing device, the method includes determining an end diastolic volume (EDV) and ejection fraction of one from the group consisting of the right ventricle and the left ventricle at a predetermined pump set speed. An average flow rate based on the predetermined pump set speed is determined. A target heart rate based at least in part on the determined EDV, ejection fraction, and average flow rate is determined. A lower rate for the pacing device is determined, the pacing device being in electrical communication with a chamber of the heart. The chamber of the heart is paced when a measured heart rate drops below the lower rate.
Claims20
A method of operating an implantable blood pump and a pacing device, comprising:
- determining an end diastolic volume (EDV) and ejection fraction of one from the group consisting of the right ventricle and the left ventricle at a predetermined pump set speed;
- determining an average flow rate based on the predetermined pump set speed;
- determining a target heart rate based at least in part on the determined EDV, ejection fraction, and average flow rate;
- determining a lower rate for the pacing device, the pacing device being in electrical communication with a chamber of the heart;
- and
- pacing the chamber of the heart when a measured heart rate drops below the lower rate.
A method of operating an implantable blood pump and a pacing device in communication with the implantable blood pump, comprising:
- measuring an average flow rate of blood exiting the implantable blood pump;
- communicating the measured average flow rate to the pacing device;
- determining an end diastolic volume (EDV) and ejection fraction of one from the group consisting of the right ventricle and the left ventricle;
- and
- determining one of a target heart rate and a lower rate for the pacing device based at least in part on the determined EDV and ejection fraction at the measured average flow rate, the pacing device being in electrical communication with a chamber of the heart.
A cardiac rhythm and blood flow management system, comprising:
- an implantable blood pump;
- and
- a pacing device in communication with the implantable blood pump, the pacing device having processing circuitry configured to:
- determine a lower rate for pacing a chamber of the heart based at least in part on a measured flow rate calculated from the implantable blood pump and received by the pacing device.
Dependencies are inferred from the claim text.