© 2002 European Society of Cardiology
Patterns of pharmacotherapy in patients hospitalised for congestive heart failure
a Department of Pharmacoepidemiology and Pharmacotherapy, Utrecht Institute for Pharmaceutical Sciences (UIPS) P.O. Box 80082, 3508 TB Utrecht, The Netherlands
b SIR Institute for Pharmacy Practice Research Leiden, The Netherlands
c Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, The Netherlands
* Corresponding author. Tel.: +31-30-2537324; fax: +31-30-2539166 E-mail address: m.bouvy{at}pharm.uu.nl
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Abstract |
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Background: In the 1990s, a number of cardiovascular drugs were evaluated in randomised clinical trials. Treatment guidelines for heart failure were modified to include these evidence-based treatments.
Aim: To evaluate the impact of new medical treatments for heart failure between 1990 and 1998.
Methods and results: A retrospective cohort study of 2764 patients with a first hospital admission for heart failure between 1990 and 1998. The percentage of patients treated with different cardiovascular drugs after hospitalisation was calculated and compared over time. Use of loop diuretics remained steady approximately 80%, digoxin decreased from 57.6 to 42.7%, angiotensin converting enzyme (ACE) inhibitors showed a slight increase from 49.8 to 54.8%, beta-blockers almost tripled from 11.3 to 28.7%, low dose prophylactic acetylsalicylic acid quadrupled from 9.9 to 39.9%. Kaplan–Meier survival estimates showed highest continuation rates of drug treatment for antithrombotics and diuretics, intermediate for digoxin and ACE inhibitors and low for beta-blockers. More than a quarter of the users discontinued beta-blockers in the first year after hospitalisation.
Conclusions: We observed an increase in the prescribing of several important drug classes, reflecting changes in treatment guidelines during the study period. However, our findings show that not all patients were receiving optimal treatment. More research into the reasons for this is warranted.
Key Words: ACE-inhibitors • Beta-blockers • Diuretics • Digoxin • Antithrombotics • Heart failure • Medication patterns • Persistence of therapy
Received April 15, 2002; Revised July 16, 2002; Accepted September 17, 2002
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