Related Experiment Video
Updated: Mar 8, 2026

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
Published on: October 12, 2012
New oral anticoagulants-TURKey (NOAC-TURK): Multicenter cross-sectional study
Servet Altay1, Özlem Yıldırımtürk, Hüseyin Altuğ Çakmak
1Department of Cardiology, Faculty of Medicine, Trakya University; Edirne-Turkey. svtaltay@gmail.com.
Objective:
New oral anticoagulants (NOACs) are increasingly used both for prevention of stroke in non-valvular atrial fibrillation (NVAF) and the treatment of venous thromboembolism (VTE). In this study, we aimed to evaluate the current patterns of NOACs treatment in Turkey. Moreover, demographic and clinical parameters and bleeding and/or embolic events under NOACs treatment were analyzed.
Methods:
The New Oral Anticoagulants-TURKey (NOAC-TURK) study was designed as a multicenter cross-sectional study. A total of 2,862 patients from 21 different centers of Turkey under the treatment of NOACs for at least three months were included in this study. Demographic, clinical, and laboratory characteristics of study participants with their medications used were obtained through the NOAC-TURK survey database. Additional necessary medical records were obtained from electronic health records of participating centers.
Results:
Of the 2. 862 patients, 1.131 (39.5%) were male and the mean age was 70.3±10.2 years. Hypertension was found as the most frequent comorbidity (81%). The most common indication for NOACs was permanent atrial fibrillation (83.3%). NOACs were mainly preferred because of inadequate therapeutic range or overdose during warfarin usage. The most frequent complication was bleeding (n=217, 7.6%), and major bleeding was observed in 1.1% of the patients. Embolic events were observed in 37 patients (1.3%). Rivaroxaban and dabigatran were both more preferred than apixaban. Almost half of the patients (47.6%) were using lower doses of NOACs, which is definitely much more than expected.
Conclusion:
The NOAC-TURK study showed an important overview of the current NOACs treatment regimens in Turkey. Although embolic and bleeding complications were lower than or similar to previous studies, increased utilization of low-dose NOACs in this study should be considered carefully. According to the results of this study, NOACs treatment should be guided through CHA2DS2-VASc and HASBLED scores to ensure more benefit and less adverse effects in NVAF patients.
Insights
New oral anticoagulants (NOACs) are widely used for stroke prevention in non-valvular atrial fibrillation (NVAF) and venous thromboembolism (VTE) treatment. This study highlights increased low-dose NOAC use in Turkey, suggesting treatment guidelines are needed to optimize patient outcomes.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Background:
- New oral anticoagulants (NOACs) are increasingly prescribed for non-valvular atrial fibrillation (NVAF) and venous thromboembolism (VTE).
- Understanding current treatment patterns and outcomes is crucial for optimizing NOAC therapy.
Purpose of the Study:
- To evaluate current patterns of NOAC treatment in Turkey.
- To analyze demographic, clinical parameters, and adverse events (bleeding/embolic) associated with NOAC use.
Main Methods:
- A multicenter cross-sectional study (NOAC-TURK) involving 2,862 patients treated with NOACs for at least three months.
- Data collected via survey and electronic health records, including demographics, clinical characteristics, and medications.
Main Results:
- Hypertension was the most common comorbidity (81%); permanent atrial fibrillation was the primary indication (83.3%).
- Bleeding occurred in 7.6% and embolic events in 1.3% of patients.
- Notably, 47.6% of patients received lower-than-expected NOAC doses.
Conclusions:
- The NOAC-TURK study provides insights into Turkish NOAC treatment practices.
- While complications were comparable to prior studies, the high rate of low-dose NOAC use warrants attention.
- Treatment guidance using CHA2DS2-VASc and HASBLED scores is recommended for NVAF patients to maximize benefits and minimize risks.
Related Concept Videos
Anticoagulant 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...
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Venous Thrombosis III: Interprofessional Care
Bioavailability Study Design: Single Versus Multiple Dose Studies
Bioavailability Study Design: Healthy Subjects Versus Patients
Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies