the effects of a single oral dose ( 100 mg ) of the angiotensin-converting enzyme ( ace ) inhibitor , captopril ( sq 14,224 ) , on blood pressure ( bp ) , plasma renin activity ( pra ) , plasma aldosterone ( pa ) , and serum ace were investigated in 18 patients with essential hypertension ( eh ) and in 4 with renovascular hypertension ( rvh ) .
C0032105
plasma
C0229671
serum