Post occlusive reactive hyperemia (PORH)

Post occlusive reactive hyperemia (PORH) is used to investigate and assess microvascular function. The test involves blood perfusion measurements before, during and after occlusion.

PeriFlux System 5000 with a standard laser Doppler probe and cuff can be used to monitor a PORH reaction. In this case, the laser Doppler probe is placed distal to the cuff which is then inflated to a pressure well above the systolic blood pressure. After 3 to 5 minutes occlusion, pressure is released instantly and the laser Doppler signal is evaluated. Important parameters to evaluate include time to resting perfusion, time to half recovery, percentage change from baseline, maximum perfusion and area under curve

Features:

• Automatic generation of PORH specific report
• Possibility of adding other complementary techniques such as heat-controlled laser Doppler

Another option to study post occlusive reactive hyperemia (PORH) is using the microcirculatory imager PeriCam PSI System. Equipped with a CCD camera that can capture images with a speed of up to 100 fps, PeriCam PSI System can both monitor the dynamics of the response as well as generating a spatial view of the blood distribution in a given area.

Features:

• Laser Speckle technology
• Video speed, large areas