EFFECT OF HIGH FREQUENT VIBRATING BLOOD FLOW ON THE PERIPHERAL BLOOD FLOW DISTRI-BUTION USING A VIBLATING ELECTRO-MAGNETIC PUMP (VEMP) IN THE CONDITION OF HYPOPER-FUSION

Abstract

A viblating electro-magnetic pump (VEMP), which generates viblating flow at the frequency of 3-50Hz, was utilized to analyse the effect of each frequency element composing the pulsatile flow and pressure patterans on the peripheral blood flow distribution in the condition of hypoperfusion. In 7 adult goats in which a VEMP was applied as a total left heart bypass, carotid artery flow (CAF), subclavian artery flow and total peripheral resistance were changed according to the drive frequency of the VEMP. CAF showed a significant increase at the drive frequency of 7 and 15Hz compared with conventional artificial heart driving at the rate of 120 b. p. m. These results suggest that each frequency component of blood flow affects the peripheral blood flow distribution in the condition of hypoperfusion.