clinical studies were carried out during digoxin maintenance therapy to clarify three questions concerning digitalis therapy : optimal time for blood sample collection for serum digoxin concentration ( sdc ) , the overlapping range of sdc levels in which some patients may be intoxicated while others are not , and both resistance and sensitivity of atrial fibrillation ( af ) to digitalis .
C0012265
digoxin
C0004238
atrial fibrillation