min ~'; ?=0003). While felodipine significantly decreased the total number of ST-D (from 40 to six episodes; P=003), the total number of ST-D remained unchanged with the diuretic (non-significant increase from 31 to 45 episodes; P=0-24). The same trend was observed for the number of patients with ST-D. The ischaemic threshold, defined as DP at the onset of the episodes of ST-D, increased wit