in eight normal male subjects , aged 23 +/- 1 years ( mean +/- sem ) , we directly measured mean arterial pressure , heart rate , central venous pressure , and msna ( microneurography ) during hypotension ( combined aortic and carotid baroreceptor deactivation ) produced by intravenous infusion of sodium nitroprusside and during nitroprusside infusion with superimposed application of external neck suction .
C0037533
sodium nitroprusside
C0028193
nitroprusside