the vasopressin antagonist , [ d ( ch2 ) 5avp ] ( manning compound , mc ) , the ang ii antagonist , saralasin ( sar ) , and the ganglionic blocking drug , hexamethonium ( hx ) , were injected in a random sequence into the left atrium ( la ) while bp and heart rate ( hr ) were monitored .
C0003009
ang ii
C0036193
saralasin