this yielded pa2 values of 7.19 , 7.34 +/- 0.1 and 7.66 +/- 0.09 , which were at least one order of magnitude less than literature values and that obtained with adrenaline ( 8.76 +/- 0.18 ) , and are not consistent with noradrenaline stimulating an alpha 1-adrenoreceptor in the presence of beta-adrenoceptor blockade , the increase in left atrial tension by noradrenaline does not appear to be mediated by beta l- or typical alpha-adrenoceptors .
C0001638
alpha 1-adrenoreceptor
C0034784
alpha-adrenoceptors