CPC A61B 5/026 (2013.01) [A61B 5/6851 (2013.01); A61B 5/6853 (2013.01); A61B 2562/0247 (2013.01); A61M 5/142 (2013.01)] | 20 Claims |
1. A method of making real-time determinations of flow resistance through a targeted location in a blood vessel comprising:
placing a distal pressure sensor distal of a targeted location in the blood vessel;
placing a proximal pressure sensor proximal of the targeted location in the blood vessel;
introducing infusate at an infusate flow rate into the blood vessel proximal of the distal sensor;
changing the infusate flow rate while monitoring pressure differences between the proximal and distal sensors;
calculating flow resistance through the targeted location by dividing the change in pressure drop between the proximal and distal sensors by a corresponding change in the infusate flow rate.
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