Clinical evaluation of IDAS II, a new electronic device enabling drug adherence monitoring.
OBJECTIVE
The goal of this study was to evaluate clinically the acceptability of the IDAS II (Intelligent Drug Administration System), a new electronic device that enables drug adherence monitoring.


METHODS
IDAS II was compared to another electronic monitor, the Medication Event Monitoring System (MEMS) in a randomised two-way cross-over study involving 24 hypertensive patients treated with irbesartan. Patients used each device for 2 months. The main parameter of evaluation was the patients' opinion on both devices. Rates of adherence and blood pressure were also assessed.


RESULTS
Most patients considered both devices to be reliable reminders (IDAS II: 75%;MEMS: 84%, p = ns). Ten patients (42%) preferred the MEMS, while 11 (46%) preferred the IDAS II; three (12%) expressed no preference. Patients found the MEMS device easier to use than the IDAS device (p < 0.001) but appreciated the IDAS blister packs better than the MEMS bulk packaging (p < 0.01). Over the 4-month period, the median "taking adherence" was excellent (99.2%) and comparable with both devices. However, the regularity of drug intake timing was higher with the IDAS II (p < 0.01).


CONCLUSIONS
IDAS II, a new electronic device enabling drug adherence monitoring without reconditioning of the drugs appears to be a well-accepted device. Overall, practicability and acceptability of the IDAS II and the MEMS device were similar. Thus, IDAS II could be a useful tool for the management of long-term therapies.
Santschi
Valérie
V
Policlinique Médicale Universitaire, Lausanne, Switzerland.
Wuerzner
Grégoire
G
Schneider
Marie-Paule
MP
Bugnon
Olivier
O
Burnier
Michel
M
D000328:Adult; D000368:Aged; D000959:Antihypertensive Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D001713:Biphenyl Compounds / Q000008:administration & dosage / Q000627:therapeutic use*; D003430:Cross-Sectional Studies; D016903:Drug Monitoring / Q000295:instrumentation* / Q000523:psychology; D004867:Equipment Design; D004864:Equipment and Supplies; D005260:Female; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*; D000077405:Irbesartan; D008297:Male; D008875:Middle Aged; D010349:Patient Compliance; D011795:Surveys and Questionnaires; D013777:Tetrazoles / Q000008:administration & dosage / Q000627:therapeutic use*
D000959:Antihypertensive Agents; D001713:Biphenyl Compounds; D013777:Tetrazoles; D000077405:Irbesartan