[Chronic use of the unfixed combination of ACE-inhibitors and beta-blockers in Italy from 2013 to 2019 through the healthcare administrative data]

Abstract

Introduction: The association between an ACE-inhibitor and a beta-blocker is recommended in case of complicated arterial hypertension and heart failure with reduced ejection fraction. This retrospective drug-utilization study has described its chronic use from the Italian National Healthcare Service perspective.

Methods: From the ReS (Ricerca e Salute) database, collecting Italian healthcare administrative data, patients receiving an ACE-inhibitor or a beta-blocker from 2013 to 2019 were selected. The prevalence of use (patients treated/1000 inhabitants) and of continuous treatment (patients treated for ≥80% period from the supply to the end of the same year - by means of dosage units - per 1000 inhabitants) of each single active substance were assessed. Among patients continuously treated, those supplied with an ACE-inhibitor and a beta-blocker (unfixed and fixed combinations) were analyzed in terms of prevalence of continuous treatment. Subjects treated with the unfixed combination ramipril-bisoprolol in 2019 were characterized by gender and age.

Results: The prevalence of ACE-inhibitors' use increased from 49.7/1000 inhab. in 2013 to 50.2 in 2019: ramipril was the most supplied each year (28.9 to 31.6/1000 inhab.). The prevalence of continuous treatment increased from 27.4 to 28.3/1000 inhab.: ramipril the most continuously dispensed (16 to 18/1000 inhab.). The prevalence of beta-blockers' use increased from 61.0 to 90.4/1000 inhab.: bisoprolol the most supplied and with the highest increase (27.1 to 52.2/1000 inhab.). The prevalence of continuous treatment increased from 33.1 to 55.8/1000 inhab.: bisoprolol the most continuously dispensed (18 to 37/1000 inhab.). Among patients with continuous supplies, from 49,843 a 51,496 were treated with associations between an ACE-inhibitor and a beta-blocker on an ongoing basis. Half of them were continuously treated with the unfixed combination ramipril-bisoprolol (4.3 to 4.8/1000 inhab.). In 2019, subjects with continuous supplies of ramipril-bisoprolol were mainly males (63.4%) and elderly (mean age 71±12), and the prevalence of use increased with age.

Conclusions: These findings, together with recommendations from the main international guidelines encourage to make available also ramipril and bisoprolol as fixed dose combination, in order to simplify the therapy administration and improve the adherence, especially among elderly and patients with multimorbidity.