“…Since, according to previous findings [Bernauer and Schanz, 1974], the protract ed shock is accompanied by low arterial pressures, the exogenous supply of vaso pressor catecholamines appeared to be use ful. However, adrenaline did not decrease, but even increased, the death rate [Bernauer and Filipowski, 1973]. Therefore, the circu latory effects of adrenaline, which is re leased endogenously in considerable amounts during protracted anaphylactic shock [Bernauer et al, , 1975, have been elucidated by using «-receptor, as well as /3-receptor, blocking agents.…”