Abstract

The heparin-induced extracorporeal low-density lipoprotein precipitation (HELP) eliminates selectively fibrinogen, total cholesterol, low-density lipoproteins (LDL) and triglycerides and improves hemorheology. We investigated the hemodynamic changes in 10 patients without ocular diseases performing a video fluorescein angiography after a single HELP procedure measuring the arm-retina time (ART) and the arteriovenous passage time (AVP). Laboratory parameters such as fibrinogen, cholesterol, LDL, triglycerides, red cell transit time, plasma and whole-blood viscosity were determined and retinal circulation was measured immediately before and after the HELP application. All of the laboratory parameters were lowered significantly. The ART was unaffected by the HELP procedure; however, there was a significant AVP reduction from 2.41 +/- 0.49 to 1.97 +/- 0.47 (p < 0.005). These results support the hemorheological and hemodynamic efficiency of the HELP system in microcirculatory diseases.

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