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1.
Expert Opin Drug Saf ; 15(sup2): 45-50, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27875918

ABSTRACT

OBJECTIVE: This study was aimed at evaluating the frequency and describing the adverse drug-drug interactions (DDIs) recorded among elderly patients accessing the emergency department (ED). METHODS: Patients aged ≥65 years, accessing the ED of Pisa University Hospital (Italy) from 1 January 2015 to 31 December 2015 within the ANCESTRAL-ED program, were included in this study. 'Expected' DDIs were assessed using Thomson Micromedex®. Each ED admission (discharge diagnosis) consistent with the signs and symptoms of an expected DDI for each patient was classified as an 'actual' DDI. RESULTS: Throughout the study period, 3473 patients (3812 ED admissions, 58% females, mean age: 80.3) were recorded. The total number of expected DDIs was 12,578 (67 contraindicated; 3334 major; 8878 moderate; 299 minor) detected in 2147 (62%) patients. Overall 464 expected DDIs were found to be consistent with the ED admission in 194 patients (representing 9% of patients with expected DDIs). CONCLUSIONS: More than one half of elderly patients admitted to ED presented at least one expected DDI at the time of ED presentation. However, 9% of the expected DDIs were identified as actual DDIs, based on the consistency of the expected event with the ED discharge diagnosis.


Subject(s)
Drug Interactions , Drug-Related Side Effects and Adverse Reactions/epidemiology , Emergency Service, Hospital , Aged , Aged, 80 and over , Female , Hospitals, University , Humans , Italy/epidemiology , Male , Prospective Studies
2.
Int J Clin Pract ; 69(7): 757-65, 2015 Jul.
Article in English | MEDLINE | ID: mdl-25683693

ABSTRACT

AIMS: Allopurinol is used as long-term therapy to reduce the occurrence of gout flares. This study estimated the impact of patient adherence to allopurinol on hyperuricaemia (serum uric acid levels, sUA > 6 mg/dl) and the identification of non-adherence predictors. METHODS: The Italian Health Search-CSD Longitudinal Patient Database was accessed to identify outpatients aged ≥ 18 years with gout and prescribed with allopurinol during the years 2002-2011. Patients with a proportion of days covered ≥ 80% were considered adherent to allopurinol. Data on sUA levels over the first year of therapy were categorised in three time-windows (30-89; 90-149; 150-365 days). Logistic regressions were used to estimate the association between adherence and hyperuricaemia, as well as non-adherence predictors. RESULTS: A total of 3727 patients were included. In the interval 0-29 days, the proportion of patients adherent to allopurinol was 45.9%, while up to 89, 149 and 365 days the percentages were 16.7%, 10.0% and 3.2%, respectively. The proportions of hyperuricaemic patients for each time-window were 43.1%, 42.4%, 32.6% and 59.0%, 64.0%, 66.4% among adherent and non-adherent patients, respectively. In the multivariable analysis, adherence was associated with a significant lower risk of hyperuricaemia. The adjusted ORs were 0.49 (95% CI: 0.33-0.73), 0.40 (95% CI: 0.24-0.67) and 0.23 (95% CI: 0.15-0.34) for the first, second and third time-window, respectively. Patients with hypertension (adjusted OR = 0.64, 95% CI: 0.42-0.99) and history of gout flares (adjusted OR = 0.55, 95% CI: 0.32-0.95) were significantly adherent to allopurinol. CONCLUSIONS: Adherence monitoring in patients with gout is pivotal to ensure the effectiveness of therapy. To gain a better patient adherence, the communication between physicians and patients should be improved.


Subject(s)
Allopurinol/administration & dosage , General Practice/standards , Gout/drug therapy , Patient Compliance , Uric Acid/blood , Adolescent , Adult , Aged , Aged, 80 and over , Databases, Factual , Dose-Response Relationship, Drug , Female , Follow-Up Studies , Gout/blood , Gout/epidemiology , Gout Suppressants/administration & dosage , Humans , Incidence , Italy , Male , Middle Aged , Retrospective Studies , Time Factors , Young Adult
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