Compliance with antihypertensive therapy was monitored for three months usi
ng an electronic medication dispenser in 35 patients remaining hypertensive
despite the once-daily administration of a blood pressure lowering drug (e
ither as monotherapy or as fixed-dose combination therapy). During the moni
toring of compliance, the treatment was unchanged but blood pressure decrea
sed significantly (p<0.001) from 167.9/100.4 +/- 16.3/7.2 mmHg (mean +/- SD
) to 152.5/90.9 +/- 20.9/11.5 mmHg, The percentage of days with one opening
per day was 80.8 +/- 20.5. Thus, discussing with the patient about complia
nce with the prescribed drug regimen and monitoring compliance for a few mo
nths allows better control of blood pressure. This most likely reflects inc
reased compliance with antihypertensive drug therapy.