Guideline adherence for pharmacotherapy of chronic systolic heart failure in general practice: a closer look on evidence-based therapy
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F Peters-Klimm1, T Müller-Tasch, D Schellberg
1Department of General Practice and Health Services Research, University Hospital Heidelberg, Vossstrasse 2, Heidelberg 69115, Germany. frank.peters@med.uni-heidelberg.de
Insights
General practitioners (GPs) showed good guideline adherence (GA) for chronic heart failure (CHF) pharmacotherapy using standard criteria. However, optimizing drug dosages revealed significant room for improvement in CHF treatment.
Area of Science:
- Cardiology
- Primary Care Medicine
- Pharmacotherapy
Background:
- Evidence supports pharmacotherapy for chronic heart failure (CHF), leading to treatment guidelines.
- Surveys indicate under-utilization of recommended CHF drugs.
- Treatment patterns are influenced by clinical setting and patient demographics.
Purpose of the Study:
- To evaluate guideline adherence (GA) of general practitioners (GPs) for CHF patients in primary care.
- Assess GA based on drug prescription, target dosing, and contraindications.
Main Methods:
- Cross-sectional analysis of 167 patients with left ventricular systolic dysfunction (LVEF: 33.3 ± 6.9%) across 37 GP practices in Germany.
- GA assessed via prescription rates, target dose achievement, and a modified Guideline Adherence Indicator-3 (mGAI-3).
- mGAI-3 evaluated adherence to ACE-Inhibitors (ACE-I)/angiotensin receptor blockers (ARB), beta-blockers (BB), and aldosterone-antagonists (AA) based on NYHA functional class.
Main Results:
- Prescription rates: ACE-I/ARB (80%), BB (75%), both (62%).
- Proportion of target doses reached: ACE-I (16%), BB (8%).
- Adjusted for contraindications, target doses increased: ACE-I/ARB (49%), BB (46%). mGAI-3 showed moderate to perfect GA in 83% (usual), 16% (target dose), and 55% (adjusted).
Conclusions:
- Life-saving CHF pharmacotherapy was provided above average based on usual assessment criteria in this setting.
- Utilizing additional criteria, such as target dosing and contraindication adjustments, highlights areas for treatment optimization.
- Future interventions should be tailored to the specific needs of both doctors and patients to improve CHF management.
Background:
There is robust evidence for effective pharmacotherapy of chronic (systolic) heart failure (CHF) which has led to the creation of guidelines, but many surveys evaluating CHF treatment show an under-utilisation of relevant drugs, while setting and patient population appear to be crucial for adequate appraisal of treatment patterns.
Aims:
To evaluate the guideline adherence (GA) of general practitioners (GPs) in a well-defined patient population with CHF in primary care (PC).
Methods:
A cross-sectional analysis was performed with the data of 167 patients enrolled in 37 GP practices (Germany) with documented left ventricular systolic dysfunction (LVEF: 33.3 +/- 6.9%). GA was assessed as usual (prescribing "yes" or "no"), through evaluation of target dosing, while adjusting for potential clinical contraindications, and through a modified Guideline Adherence Indicator-3 (mGAI-3), which assesses three relevant groups of substances according to New York Heart Association (NYHA) functional class: ACE-Inhibitors (ACE-I) or angiotensin receptor blockers (ARB), beta-blockers (BB) and aldosterone-antagonists (AA).
Results:
Prescription rates for ACE-I/ARB, BB or both were 80%, 75% and 62%, respectively. The proportion of target doses reached for ACE-I was 16%, for BB only 8%. When adjusted for potential (mainly relative) contraindications (COPD, heart rate <60/min, hypotension, hyperkalaemia and renal dysfunction), the percentage of target doses reached increased to 49% for ACE-I/ARBs and 46% for BB. Application of the mGAI-3 showed moderate to perfect GA for usual assessment, proportion of target dose reached and adjusted in 83%, 16% and 55% of the patients, respectively.
Conclusion:
In the context of this patient and doctor setting, life-saving treatment was provided above average when assessed by usual criteria. The application of additional criteria showed further room for improvement. Future interventions aiming at optimisation should be tailored to the needs of doctors and patients likewise.
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