[The effect of celiac plexus block on splanchnic circulation; changes in systemic hemodynamics and tissue blood flow of the liver and kidney in rabbits].
The effects of the celiac plexus block (CPB) on the hepatic and renal tissue blood flow (TBF) were investigated in 45 rabbits. Together with this, the effects of drugs (phenylephrine: PE, norepinephrine: NE, dopamine: DA, 6% hydroxyethyl starch: HES) used to increase mean blood pressure (MBP) up to control level were also investigated. TBF was measured by the hydrogen clearance method. Following CPB, MBP and heart rate decreased significantly. TBF of the liver and kidney both decreased significantly for 14.3% and 25.9% respectively. A correlation was observed between the decreases of MBP and renal TBF. An increase in hepatic TBF beyond the control level was observed in DA group, and in both hepatic and renal TBF in the HES group after adjustment of MBP. In other groups, both hepatic and renal TBF tended to decrease. It was concluded that hepatic and renal TBF decreased because of hemodynamic suppression following CPB. The results also suggest that both TBFs would have increased if systemic hemodynamic change was not so great.
Sekiguchi
Y
Y
Kamiyama
Y
Y
D000818:Animals; D002447:Celiac Plexus; D005260:Female; D006439:Hemodynamics; D008102:Liver Circulation; D008297:Male; D009407:Nerve Block; D011817:Rabbits; D012079:Renal Circulation