title: Antiplatelet effect of once- or twice-daily aspirin dosage in stable coronary artery disease patients with diabetes.
abstract: The aim of this pilot study was to compare the effect of two different regimens of aspirin dosage on platelet of coronary artery disease (CAD) diabetic patients. Twenty-five CAD diabetic patients were included. Initially, all patients received aspirin 100 mg/day for 10 days. At day 10, aspirin antiplatelet effect was determined by measuring the collagen/epinephrine closure time (CT) 2 h after the last aspirin dosage and the next morning at 8 a.m.. The aspirin regimen was modified to 100 mg twice daily for patients showing a non-optimal platelet-inhibitory effect (CT < 298 s at 8 a.m.). Persistent high platelet reactivity (HPR) was defined by a CT < 160 s. During the 100 mg/day aspirin regimen, the prevalence of HPR at 8 a.m. was 48%, and only 7 patients (28%) had showed an optimal platelet-inhibitory effect. Bridging to the twice-daily regimen, the HPR was significantly reduced (p=0.025), and the optimal platelet-inhibitory effect was reached for 3 other patients. Our results showed that 100 mg aspirin twice-daily dosing rather than a once-daily dose significantly improves the aspirin effect on platelet of CAD diabetic patients. However, large prospective studies were needed to confirm whether this strategy will be clinically relevant and safe.
authors: Department of Cardiology A, Fattouma Bourguiba University Hospital, Monastir, Tunisia. faouzi.addad@rns.tn
authors: Faouzi
authors: F
authors: Addad
authors: Tahar
authors: T
authors: Chakroun
authors: Ismail
authors: I
authors: Elalamy
authors: Fatma
authors: F
authors: Abderazek
authors: Saoussen
authors: S
authors: Chouchene
authors: Zohra
authors: Z
authors: Dridi
authors: Gregoris T
authors: GT
authors: Gerotziafas
authors: Mohamed
authors: M
authors: Hatmi
authors: Mohsen
authors: M
authors: Hassine
authors: Habib
authors: H
authors: Gamra
mesh_terms: D000328:Adult; D000368:Aged; D001241:Aspirin / Q000008:administration & dosage* / Q000494:pharmacology / Q000627:therapeutic use; D001792:Blood Platelets / Q000187:drug effects; D018890:Chemoprevention / Q000379:methods; D003324:Coronary Artery Disease / Q000188:drug therapy*; D003920:Diabetes Mellitus / Q000188:drug therapy; D003925:Diabetic Angiopathies / Q000188:drug therapy*; D004334:Drug Administration Schedule; D006801:Humans; D008875:Middle Aged; D010865:Pilot Projects; D010975:Platelet Aggregation Inhibitors / Q000008:administration & dosage; D016896:Treatment Outcome
chemical_list: D010975:Platelet Aggregation Inhibitors; D001241:Aspirin