serum concentrations of procainamide ( pa ) and n-acetylprocainamide ( napa ) were measured by fluorometry in subjects with normal renal function ( n = 4 ) and in patients with end-stage renal failure ( n = 3 ) after administration of 6.5 mg/kg of pa-hcl orally .
C0033216
procainamide
C0600311
pa-hcl