US 11,666,281 B2
Detection of hypertension in LVAD patients using speed change
D'Anne E. Kudlik, Saint Louis Park, MN (US); and Robert W. Stadler, Shoreview, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Jan. 29, 2020, as Appl. No. 16/775,982.
Claims priority of provisional application 62/811,625, filed on Feb. 28, 2019.
Prior Publication US 2020/0275890 A1, Sep. 3, 2020
Int. Cl. A61B 5/00 (2006.01); A61B 5/029 (2006.01); A61M 60/148 (2021.01); A61M 60/585 (2021.01); A61M 60/531 (2021.01); A61M 60/237 (2021.01); A61M 60/232 (2021.01); A61M 60/178 (2021.01); A61M 60/538 (2021.01); A61M 60/562 (2021.01); A61M 60/523 (2021.01); A61M 60/422 (2021.01)
CPC A61B 5/686 (2013.01) [A61B 5/029 (2013.01); A61B 5/7282 (2013.01); A61B 5/746 (2013.01); A61M 60/148 (2021.01); A61M 60/178 (2021.01); A61M 60/232 (2021.01); A61M 60/237 (2021.01); A61M 60/422 (2021.01); A61M 60/523 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/562 (2021.01); A61M 60/585 (2021.01); A61M 2205/3334 (2013.01); A61M 2205/3365 (2013.01); A61M 2206/11 (2013.01); A61M 2206/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting hypertension in a patient having a ventricular assist device, the ventricular assist device including an implantable blood pump, the method comprising:
operating the implantable blood pump at a first pump set speed during a first period of time;
measuring a first pulsatility during the first period of time, the first pulsatility corresponding to at least one of a first flow rate pulsatility or a first current pulsatility;
reducing the first pump set speed during a second period of time after the first period of time to a second pump set speed;
measuring a second pulsatility during the second period of time, the second pulsatility corresponding to at least one of a second flow rate pulsatility or a second current pulsatility; and
in response to the second pulsatility increasing during the second period of time compared to the first pulsatility during the first period of time, identifying that the patient has exhibited hypertension.