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Demographic, Clinical, and Functional Determinants of Antithrombotic

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Demographic, Clinical, and Functional Determinants of Antithrombotic Mostaza et al. BMC Cardiovasc Disord (2021) 21:384 https://doi.org/10.1186/s12872-021-02019-0 RESEARCH ARTICLE Open Access Demographic, clinical, and functional determinants of antithrombotic treatment in patients with nonvalvular atrial fbrillation Jose María Mostaza1* , Carmen Suarez2, Jose María Cepeda3, Luis Manzano4, Demetrio Sánchez5 and on behalf of the PERFILAR study investigators Abstract Background: This study assessed the sociodemographic, functional, and clinical determinants of antithrombotic treatment in patients with nonvalvular atrial fbrillation (NVAF) attended in the internal medicine setting. Methods: A multicenter, cross-sectional study was conducted in NVAF patients who attended internal medicine departments for either a routine visit (outpatients) or hospitalization (inpatients). Results: A total of 961 patients were evaluated. Their antithrombotic management included: no treatment (4.7%), vitamin K antagonists (VKAs) (59.6%), direct oral anticoagulants (DOACs) (21.6%), antiplatelets (6.6%), and antiplatelets plus anticoagulants (7.5%). Permanent NVAF and congestive heart failure were associated with preferential use of oral anticoagulation over antiplatelets, while intermediate-to high-mortality risk according to the PROFUND index was associated with a higher likelihood of using antiplatelet therapy instead of oral anticoagulation. Longer disease dura- tion and institutionalization were identifed as determinants of VKA use over DOACs. Female gender, higher educa- tion, and having sufered a stroke determined a preferential use of DOACs. Conclusions: This real-world study showed that most elderly NVAF patients received oral anticoagulation, mainly VKAs, while DOACs remained underused. Antiplatelets were still ofered to a proportion of patients. Longer duration of NVAF and institutionalization were identifed as determinants of VKA use over DOACs. A poor prognosis according to the PROFUND index was identifed as a factor preventing the use of oral anticoagulation. Keywords: Antithrombotic treatment, Direct-acting oral anticoagulants (DOACs), Nonvalvular atrial fbrillation (NVAF), Vitamin K antagonists (VKAs) Background ischemic stroke and systemic thromboembolism [2, 3]. Atrial fbrillation (AF) is the most common type of sus- Te risk of stroke in AF patients is about fvefold higher tained cardiac arrhythmia, and its prevalence rises with than in the non-AF population [4], and AF-related strokes age, with about 18% of patients older than 80 years being are generally more severe, with increased risk of death afected [1]. Nonvalvular AF (NVAF) is strongly associ- and disability compared to strokes from other causes ated with increased morbidity and mortality related to [5]. Elderly patients with AF are at higher risk of stroke than younger AF patients [6, 7]. Indeed, age ≥ 75 years is a signifcant risk factor comparable to a history of stroke *Correspondence: [email protected] for the assessment of stroke risk by the CHA2DS2-VASc 1 Department of Internal Medicine, Hospital Carlos III, Calle Sinesio score [8]. Prevention of stroke is therefore imperative in Delgado, 10, 28029 Madrid, Spain Full list of author information is available at the end of the article AF patients, particularly in elderly patients. © The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http:// creat iveco mmons. org/ licen ses/ by/4. 0/. The Creative Commons Public Domain Dedication waiver (http:// creat iveco mmons. org/ publi cdoma in/ zero/1. 0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. Mostaza et al. BMC Cardiovasc Disord (2021) 21:384 Page 2 of 12 Oral anticoagulation (OAC) with vitamin K antagonists Based on this background, we conducted a cross-sec- (VKA) has traditionally been the mainstay for stroke pre- tional study to describe the demographic, functional, and vention in AF based on the robust clinical evidence of clinical characteristics of patients with NVAF attend- their efcacy in preventing stroke or systemic embolism ing internal medicine departments in Spanish hospitals and reducing mortality [9]. However, VKAs have several and the potential factors associated with antithrombotic known limitations, including the risk of major bleeding treatment patterns. complications, especially intracranial hemorrhage, many food and drug interactions, and the need for frequent Methods coagulation monitoring due to their narrow therapeu- Study design and patients tic window. Direct-acting oral anticoagulants (DOACs) A multicenter, cross-sectional observational study was targeting thrombin or factor Xa emerged as a welcome conducted in internal medicine departments from 93 addition for stroke prevention in AF. Tese agents have hospitals distributed across Spain. predictable pharmacodynamic efects, allowing fxed Eligible patients were consecutive adult patients dosing without the need for anticoagulation monitoring (aged ≥ 18 years) diagnosed with NVAF (defned as the [10]. DOACs, such as rivaroxaban, dabigatran, apixaban rhythm disturbance occurring in the absence of rheu- and edoxaban, have demonstrated to be noninferior to matic mitral stenosis or a prosthetic heart valve) who warfarin in stroke prevention without an increased risk attended the internal medicine departments either for a of major bleeding [11–15]. Based on their favorable ef- routine visit (outpatients) or hospitalization (inpatients) cacy, safety profle and convenience of use, DOACs are for any reason during the 9-month enrolment period. recommended over VKAs for stroke prevention in most Patients were selected on the basis of the information patients with NVAF [16]. recorded in the medical charts. Te patients must have Adequate selection of antithrombotic therapy for been diagnosed with NVAF before the study inclusion, stroke prevention is critical for improving the clinical and disease-related data (type of NVAF, disease duration, outcome of patients with NVAF. Several clinical practice etc.) was collected from medical charts. Patients cur- guidelines have been developed to guide the manage- rently receiving anticoagulant therapy for venous throm- ment of AF patients, providing clinicians with recom- boembolism and patients participating in a clinical trial mendations on individualization of treatment based on with anticoagulant or antiplatelet agents in the previous the patient’s characteristics [16, 17]. However, the imple- six months were excluded. mentation of guideline recommendations in routine clin- A cross-sectional chart review was performed to collect ical practice may be suboptimal. OAC is still underused patients’ sociodemographic, functional and clinical data, in AF patients who are at high risk of stroke, and many as well as treatment-related data. Te social, functional, patients are instead treated with antiplatelet agents or do and cognitive status of patients was also assessed through not receive antithrombotic treatment [18, 19]. Accord- face-to-face interviews with patients at the time of the ingly, despite the higher risk of stroke and bleeding in study visit (cross-sectional evaluation). Cognitive impair- elderly NVAF patients [20], anticoagulation has been ment was evaluated using the Pfeifer questionnaire [22, traditionally underused in this population mainly due to 23], and data on functional disability assessed using the the high frequency of associated comorbidities, including Barthel index [24] was collected. Patient comorbidity cardiovascular and kidney disease, multiple drug therapy, was measured by using the Charlson comorbidity index and concerns about cognitive impairment and risk of falls [25] (absent of comorbidity: score = 0–1; low comor- and bleeding [21]. bidity: score = 2; severe comorbidity: score ≥ 3). Te To date, limited data are available on the clinical man- PROFUND index score [26] was calculated to estimate agement of NVAF patients, particularly in those patients one-year mortality risk as follows: low-risk (12.1–14.6%) attended in the internal medicine setting, where these for a score of 0–2, low-intermediate risk (21.5–31.5%) patients are typically managed. Tere is therefore a need for a score of 3–6, intermediate-high risk (45–50%) for a to identify current therapies used for stroke prevention score of 7–10, and high-risk (61.3–68%) for a score ≥ 11. and the factors that may guide the selection of treatment Physician’s estimation of the patient’s life expectancy (< 6 in the real-world setting. A better understanding of treat- or ≥ 6 months) was also assessed. Te risk of ischemic ment patterns and factors potentially infuencing treat- stroke and bleeding was assessed by CHA2DS2-VASc ment strategy is crucial to know whether clinical practice score [8] and HAS-BLED score [27], respectively.
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