All patients received ramipril.Plasma natriuretic peptides ( atrial [ ANP ] and brain [ BNP ] natriuretic peptide ) , epinephrine , norepinephrine ( NEPI ) , antidiuretic hormone , aldosterone ( Aldo ) , renin activity ( PRA ) , substance P , neuropeptide Y-like immunoreactivity , calcitonin gene-related peptide , and vasoactive intestinal peptide were measured at baseline and at the end of the treatment period .
