Related Experiment Video
Updated: Apr 15, 2026
The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
[Knowledge of guidelines for anticoagulation management of patients with atrial fibrillation]
Marcus Wiemer1, T Kottmann, M Starrach
1Kardiologische Klinik, Herz- und Diabeteszentrum Nordrhein Westfalen, Ruhr-Universität Bochum, Georgstraße 11, 32545, Bad Oeynhausen, Deutschland, akleemeyer@hdz-nrw.de.
Insights
Cardiologists in Germany demonstrate better knowledge of CHADS2 criteria for atrial fibrillation (AF) risk stratification than general practitioners. However, even cardiologists may not always apply anticoagulation guidelines correctly, highlighting the need for further education.
Area of Science:
- Cardiology
- Internal Medicine
- Public Health
Background:
- Atrial fibrillation (AF) affects approximately 1 million people in Germany, posing significant morbidity and mortality risks, primarily from thromboembolic events.
- Effective risk stratification using CHADS2 criteria is crucial for guiding anticoagulation therapy and improving patient prognosis.
- Current knowledge and implementation of CHADS2 criteria among German healthcare providers remain unevaluated.
Purpose of the Study:
- To assess the awareness and application of CHADS2 criteria and related anticoagulation guidelines among cardiologists and general practitioners in Germany.
- To identify potential disparities in knowledge between these two physician groups.
- To evaluate the impact of continuing medical education on guideline adherence.
Main Methods:
- A survey was conducted among 558 cardiologists and general practitioners at the German Society of Cardiology annual meeting and via written questionnaires.
- Participants represented a sample of German general practitioners.
- Data collected focused on knowledge of CHADS2 criteria and their components.
Main Results:
- A significantly higher percentage of cardiologists (87.6%) reported knowing the CHADS2 criteria compared to general practitioners (51.8%).
- Knowledge of specific risk factors varied, with heart failure being less recognized than cerebral stroke across both groups.
- Physicians who completed recent training on anticoagulation and AF showed significantly better knowledge of the guidelines.
Conclusions:
- While cardiologists generally exhibit better awareness of CHADS2 criteria than general practitioners, knowledge gaps persist, particularly regarding specific risk factors like heart failure.
- Adherence to anticoagulation guidelines in AF management is not consistently optimal, even among specialists.
- Targeted training programs demonstrably improve physician knowledge of anticoagulation guidelines for AF.
Introduction:
In Germany, about 1 million people are affected by atrial fibrillation (AF). Morbidity and mortality are high especially due to the risk of thromboembolic events. A valid risk stratification by the CHADS2 criteria is critical regarding the indication for anticoagulation and thus to improve prognosis. To what extent these criteria and guidelines are known and have been implemented among cardiologists and general practitioners in Germany has not been evaluated so far.
Methods:
A total of 558 cardiologists (46.8 %) and general practitioners (52.5 %) were surveyed during the annual meeting of the German Society of Cardiology or in writing in a representative sample of German general practitioners.
Results:
Compared to 51.8 % of general practitioners, 87.6 % of cardiologists (p < 0.001) claimed to know the CHADS2 criteria. In the total cohort, CHADS2 criteria were correctly identified as risk factors by 55.6-86.9 %. Cardiologists had significantly better knowledge of these criteria (63.6-91.2 % vs. 55.6-86.9 %, p < 0.001). A previous history of cerebral stroke was known to be a risk factor in almost all physicians in contrast to heart failure (47.3 % of cardiologists vs. 36.0 % of general practitioners, p < 0.001). Physicians who had attended a training course on anticoagulation and atrial fibrillation (n = 380) in the 2 years prior to the survey performed significantly better (p = 0.007) than those without training (n = 173).
Conclusion:
While the majority of cardiologists knew the CHADS2 criteria and the related guidelines, these criteria were less known in the primary care sector. Nevertheless, even cardiologists do not always apply the guidelines for anticoagulation in AF correctly. Participants of training courses had a significantly better knowledge of these guidelines.
Related Concept Videos
01:29Venous Thrombosis III: Interprofessional Care
01:30Venous Thrombosis IV: Nursing Management
01:18Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
01:26Cardiac Catheterization IV: Nursing Management
01:27Pulmonary Embolism III: Nursing Management