scholarly journals Predictors of Oral Anticoagulants Utilization in Patients with Atrial Fibrillation

2020 ◽  
Vol 10 (2) ◽  
pp. 40-48
Author(s):  
Sabina Sankhi ◽  
Nirmal Raj Marasine ◽  
Rajendra Lamichhane ◽  
Nim Bahadur Dangi

Introduction: Atrial fibrillation (AF) is the most common sustained cardiac rhythm disturbance, increasing in prevalence with age. It is often associated with structural heart disease, although a substantial proportion of patients with AF have no detectable heart disease. Hemodynamic impairment and thromboembolic events related to AF result in significant morbidity, mortality, and cost. Several factors are associated with the prescription of oral anticoagulants. This review predicts the overall factors that are associated with oral anticoagulant utilization in patients with AF. Methods: Literatures that analyze the predictors of oral anticoagulant utilization in atrial fibrillation were searched using PubMed and Google Scholar published in journals from 2003 to 2019. Eligibility, data extraction and quality assessment were followed by a narrative synthesis of data. An extensive search of recent literature was performed. Results: Older age, comorbidities like hypertension, diabetes, heart failure, coronary artery disease, peripheral artery disease, moderate to severe kidney disease, polypharmacy, higher stroke and bleeding risk, history of smoking and alcohol or substance abuse, and lower cost are predictors of warfarin utilization. Similarly, younger age, better kidney function with creatinine clearance at least 30 mL/min, no or lower risk of stroke and hemorrhage, no polypharmacy, less comorbidities, prescriptions by neurologists and cardiologist, people residing in countries with lower poverty rates, and high cost are potential predictors of non-vitamin K antagonist oral anticoagulants utilization. Conclusion: Our study suggests that knowing the predictors for anticoagulation utilization can improve medication appropriateness in arterial fibrillation patients.

2017 ◽  
Vol 37 (suppl_1) ◽  
Author(s):  
Hong Seok Lee

Background: Oral anticoagulants known as a novel oral anticoagulant have been used for the management of non -valvular atrial fibrillation. There was no enough study regarding the efficacy and safety of three major new oral anticoagulants. We assessed major three oral anticoagulants in terms of major bleeding complication and stroke prevention by meta-analyses studies comparing those drugs. Method: Relevant studies were identified through electronic literature searches of MEDLINE, EMBASE, Cochrane library, and clinicaltrials.gov (from inception to February 24, 2016). RevMan and ITC software were used for direct comparisons, respectively. Results: Apixaban (N=6020), versus dabigatran(N=12038), apixaban versus rivaroxaban(N=8503) and rivaroxaban versus dabigatran were analyzed directly. There was significantly higher major bleeding risks in apixaban compared to dabigatran (both 110mg and 150mg) after adjusting baseline bleeding risk (Relative risk 3.41, 95% confidence interval(2.61 to 4.47) in 110mg, (5.62, 4.83 to 6.54) in 150mg. Intracranial bleeding risk in apixaban was significantly higher than in dabigatran (10.5, 6.10 to18.01). However, apixaban had less GI bleeding risk compared to dabigatran (0.80 , 0.65 to 0.98) and also had less ischemic stroke risk (0.31,0.22 to 0.42). Rivaroxaban showed higher major bleeding risk than dabigatran 110mg (2.34 , 1.81 to 3.03), however, Rivaroxaban had less bleeding risk compared to dabigatran 150mg (0.41, 0.35 to 0.46). Dabigatran 110mg and 150mg had less GI bleeding risk compared to rivaroxaban (0.31 , 0.24 to 0.39) and (0.23,0.17 to 0.29) respectively. Ischemic stroke risk was also decreased in dabigatran110mg (0.46, 0.38 to 0.57). and 150mg (0.66 ,0.52 to 0.83). Conclusion: Observed oral anticoagulants were associated with various complications. Overall, apixaban had higher intracranial bleeding risk than dabigatran. The highest GI bleeding risk in rivaroxaban compared to apixaban and dabigatran. Ischemic stroke risk was the highest in dabigatran. In conclusion, we may use those oral anticoagulant based on risks rates, however, a larger study with longer follow-up is needed to corroborate findings.


EP Europace ◽  
1999 ◽  
Vol 1 (1) ◽  
pp. 35-39 ◽  
Author(s):  
L. Gianfranchi ◽  
M. Brignole ◽  
C. Menozzi ◽  
G. Lolli ◽  
N. Bottoni

Abstract We evaluated the rate of progression of permanent atrial fibrillation (AF) and identified clinical factors that predict this event in 63 consecutive patients who had undergone AV junctional ablation and DDDR pacemaker implantation for drug-refractory paroxysmal atrial fibrillation/flutter. Immediately after ablation, anti-arrhythmic drugs were discontinued in all cases. Permanent AF was con-sidered to have developed if AF was present on two consecutive 6-monthly examinations with no interim documented sinus rhythm. During a mean follow-up of 23±16 months, 22 (35%) of the 63 patients developed permanent AF. The actuarial estimate of progression of permanent AF was 22%, 40% and 56%, respectively, 1, 2 and 3 years after ablation. Age and underlying heart disease were independent predictors of progression of permanent AF. Only one (6%) of 16 patients with idiopathic AF had permanent AF (low risk group). Among the 47 patients with structural heart disease, permanent AF developed in 18 (62%) of the 29 who were aged >75 years or had >12 arrhythmic episodes per year and a symptom duration >4 years (high risk group), but only in three (17%) of the remaining 18 patients who did not (intermediate risk group). In conclusion, during a 3-year follow-up period, about half of the patients with a history of drug-refractory paroxysmal AF did not develop permanent AF after AV junctional ablation and dual-chamber pacemaker implantation, even in the absence of anti-arrhythmic drug therapy. Moreover, subgroups of patients whose risk of permanent AF progression differed were identified on the basis of simple baseline clinical variables. The results of this study form the necessary background for the correct management of patients after AV junction ablation and for the planning of future trials in this field.


Medicina ◽  
2019 ◽  
Vol 55 (10) ◽  
pp. 626 ◽  
Author(s):  
Anna Poggesi ◽  
Carmen Barbato ◽  
Francesco Galmozzi ◽  
Eleonora Camilleri ◽  
Francesca Cesari ◽  
...  

Background and Objectives: In anticoagulated atrial fibrillation (AF) patients, the validity of models recommended for the stratification of the risk ratio between benefits and hemorrhage risk is limited. Cerebral small vessel disease (SVD) represents the pathologic substrate for primary intracerebral hemorrhage and ischemic stroke. We hypothesize that biological markers—both circulating and imaging-based—and their possible interaction, might improve the prediction of bleeding risk in AF patients under treatment with any type of oral anticoagulant. Materials and Methods: The Strat-AF study is an observational, prospective, single-center hospital-based study enrolling patients with AF, aged 65 years or older, and with no contraindications to magnetic resonance imaging (MRI), referring to Center of Thrombosis outpatient clinic of our University Hospital for the management of oral anticoagulation therapy. Recruited patients are evaluated by means of a comprehensive protocol, with clinical, cerebral MRI, and circulating biomarkers assessment at baseline and after 18 months. The main outcome is SVD progression—particularly microbleeds—as a selective surrogate marker of hemorrhagic complication. Stroke occurrence (ischemic or hemorrhagic) and the progression of functional, cognitive, and motor status will be evaluated as secondary outcomes. Circulating biomarkers may further improve predictive potentials. Results: Starting from September 2017, 194 patients (mean age 78.1 ± 6.7, range 65–97; 61% males) were enrolled. The type of AF was paroxysmal in 93 patients (48%), and persistent or permanent in the remaining patients. Concerning the type of oral anticoagulant, 57 patients (29%) were on vitamin K antagonists, and 137 (71%) were on direct oral anticoagulants. Follow-up clinical evaluation and brain MRI are ongoing. Conclusions: The Strat-AF study may be an essential step towards the exploration of the role of a combined clinical biomarker or multiple biomarker models in predicting stroke risk in AF, and might sustain the incorporation of such new markers in the existing stroke prediction schemes by the demonstration of a greater incremental value in predicting stroke risk and improvement in clinical outcomes in a cost-effective fashion.


2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
C Blomstrom-Lundqvist ◽  
N Marrouche ◽  
S Connolly ◽  
V Corp Dit Genti ◽  
M Wieloch ◽  
...  

Abstract Background Atrial fibrillation (AF) is known to progress over time and the effectiveness of antiarrhythmic therapy may vary based on the duration of a patient's AF history. Outcomes with dronedarone (DRO) based on duration of AF/atrial flutter (AFL) history have not been previously characterized. Purpose To evaluate the efficacy and safety of DRO by time since first known AF/AFL episode in patients studied in the ATHENA trial. Methods 2859 (61.8%) patients from ATHENA with documented first known AF/AFL episode (of 4628 total patients randomized) were included in the analysis. Among these patients, first AF/AFL episode was reported at <3 months (shorter history), 3 to <24 months (intermediate), and ≥24 months (longer) in 1296 (45.3%), 845 (29.6%) and 718 (25.1%) patients, respectively. AF/AFL recurrence was evaluated in patients in sinus rhythm at baseline by ECG during study visits or symptom recurrence. Results Demographics (age, sex) were similar across all groups. Patients with longer AF/AFL history tended to have higher prevalence of coronary heart disease and structural heart disease; and were more likely to have AF/AFL (by 12-lead ECG) at baseline (30%) compared to 26% and 16% for intermediate and shorter history groups. Patients with a longer AF history likely had a prior ablation for AF/AFL (7%) vs patients with an intermediate (2%) or shorter AF/AFL history (1%), and more likely required cardioversion during the study (24%) vs intermediate (17%) and shorter history groups (11%). Outcomes and efficacy are reported in Table 1. Rates of treatment-emergent adverse events (TEAEs), serious TEAEs, permanent drug discontinuations, and deaths were similar across all AF/AFL groups. Table 1. Outcomes and efficacy summary Relative Risk, dronedarone (DRO) vs placebo (PBO)1 (95% CI)1,2 AF/AFL <3 months AF/AFL 3 to <24 months AF/AFL ≥24 months PBO (n=626) DRO (n=670) PBO (n=429) DRO (n=416) PBO (n=363) DRO (n=355) First CV hospitalization3 or death (any cause) 0.79 (0.65, 0.96) 0.72 (0.56, 0.92) 0.84 (0.66, 1.07) First CV hospitalization 0.78 (0.64, 0.96) 0.70 (0.55, 0.91) 0.82 (0.63, 1.05) Death (any cause) 0.82 (0.54, 1.24) 0.85 (0.43, 1.68) 1.13 (0.61, 2.10) First AF/AFL recurrence4 0.80 (0.65, 0.97) 0.67 (0.53, 0.84) 0.81 (0.65, 1.02) 1Cox regression model. 2On study period, all randomized patients. 3Main reason was AF/other supraventricular rhythm disorders. 4On selected patients in sinus rhythm at baseline (AF/AFL <3 months: PBO n=514, DRO n=529; 3 to <24 months: PBO n=288, DRO n=312; ≥24 months: PBO n=252, DRO n=250). CV = Cardiovascular. Conclusions Nearly half the patients in ATHENA had a shorter history (<3 months) of AF/AFL prior to randomization. Patients with a longer history of AF/AFL had a greater burden of AF/AFL based on baseline rhythm status, ablation history, and cardioversions required post randomization. Despite these differences, clinical outcomes, efficacy, and safety of DRO appeared to be generally consistent irrespective of duration of AF/AFL history. Acknowledgement/Funding Sanofi, New York, New York, United States of America


2014 ◽  
Vol 111 (05) ◽  
pp. 789-797 ◽  
Author(s):  
Kang-Ling Wang ◽  
Gregory Y. H. Lip ◽  
Chern-En Chiang

SummaryAtrial fibrillation (AF) is the most common sustained cardiac arrhythmia. In 2050, it is estimated that there will be 72 million AF patients in Asia, accounting for almost 2.9 million patients suffering from AF-associated stroke. Asian AF patients share similar risk factor profiles as non-Asians, except that more Asians have a history of previous stroke. Clinical challenges are evident in the field of stroke prevention in AF, amongst Asians. Existing stroke and bleeding risk scores have not been well-validated in Asians. Asians are prone to bleeding when treated with warfarin, and the optimal international normalised ratio (INR) for warfarin use is yet to be determined in Asians, though Asian physicians tend to keep it in a lower range (e.g. INR 1.6–2.6) for elderly patients despite limited evidence to justify this. In general, warfarin is ‘difficult’ to use in Asians due to higher risk of bleeding and higher stroke rate in Asians than in non-Asians, as shown in randomised controlled trials. Excess of bleeding was not found in Asians when novel oral anticoagulants (NOACs) were used. Besides, the superiority of NOACs to warfarin in reducing thromboembolism was maintained in Asians. Therefore NOACs are preferentially indicated in Asians in terms of both efficacy and safety. Also, some preliminary data suggest that Asian patients with AF might not be the same. Future prospective randomised trials are needed for the selection of NOACs according to different ethnic background.Note: The review process for this manuscript was fully handled by Christian Weber, Editor in Chief.


Author(s):  
Alexander C. Fanaroff ◽  
Shuang Li ◽  
Guillaume Marquis-Gravel ◽  
Jay Giri ◽  
Renato D. Lopes ◽  
...  

Background: Older adults with atrial fibrillation (AF) are often treated with the shortest possible duration of antiplatelet/anticoagulant therapy after myocardial infarction (MI) or percutaneous coronary intervention (PCI) due to concern for bleeding. However, the risk of recurrent MI or PCI prompting antiplatelet therapy extension is unknown in this population. Methods: Using the National Cardiovascular Data Registry linked to Medicare claims, we described the cumulative incidence of recurrent MI or PCI over a median of 7-year follow-up for patients ≥65 years old with AF discharged alive after acute MI between 2008 and 2017. We used pharmacy fill data to describe the proportion of patients filling prescriptions for both oral anticoagulants and P2Y 12 inhibitors for ≥50% of the indicated duration after MI or PCI. Results: Of 187 622 older patients discharged alive after MI, 50 539 (26.9%) had AF. Over a median of 7-year follow-up in patients with AF, the cumulative incidence was 14.5% for recurrent MI, 12.1% for PCI, 7.9% for stroke, and 9.5% for bleeding hospitalization. Among 7998 patients with AF and recurrent MI or PCI, 1668 (20.9%) had >1 MI or PCI during follow-up. Assuming each MI or PCI should be followed by 6 months of P2Y 12 inhibitor therapy, patients with AF who had a recurrent MI/PCI had a median estimated indication for antiplatelet/anticoagulant treatment of 287 days (194, 358), but filled both P2Y 12 inhibitor and oral anticoagulant for a median of 0 days (0, 21). In this cohort, 12.2% of patients filled prescriptions for both a P2Y 12 inhibitor and oral anticoagulant for ≥50% of the indicated duration. Conclusions: Older adults with AF and MI have high incidences of downstream recurrent MI or PCI requiring extended antiplatelet/anticoagulant therapy durations, yet many appear to be under-treated. These results highlight the need for better thrombosis prevention strategies in this group of patients.


Circulation ◽  
2007 ◽  
Vol 116 (suppl_16) ◽  
Author(s):  
Peter Leong-Sit ◽  
Karin H Humphries ◽  
May Lee ◽  
George J Klein ◽  
Robert Sheldon ◽  
...  

Background: The natural history of lone atrial fibrillation (AF) is unclear with conflicting data in the literature. We aimed to better describe the clinical outcomes and echocardiographic changes associated with lone AF. Methods: The Canadian Registry of Atrial Fibrillation (CARAF) enrolled 803 non-surgical and non-flutter patients with new onset AF between 1990 and 1996. At enrollment, patients were classified as lone AF (LAF) or not lone AF (Not LAF) based on structural heart disease or hyperthyroidism. Clinical data was prospectively collected with follow-up at 3 months, 1 year, then annually; echocardiograms were performed at enrollment and years 2, 4, and 7. Results: The LAF group (n=212) had a median age of 57 (1 st quartile 44, 3 rd quartile 67) while the Not LAF group (n=591) had a median age of 67 (59, 73), p<0.0001. During the median follow-up of 8 years in the LAF group and 7 years in the Not LAF group, there was a significant difference in survival free from stroke or embolism favoring the LAF group (Figure ). At 8 years, the probability of remaining free of chronic AF was 78.8% vs 69.3% (p=0.02) and free of symptomatic or documented recurrence of AF was 40.1% vs 26.9% (p<0.01) in the LAF vs Not LAF group. The LAF group had smaller LV diastolic and systolic dimensions by 5.5% and 10.2%, respectively, vs the Not LAF group (p<0.0001). The LV mass was smaller at baseline by 21.1% (p<0.0001) vs the Not LAF group, but increased at a greater rate (4.0% vs 0.9%/2 years, p<0.0001). Conclusions: Lone AF, compared to non-lone AF, is associated with a lower rate of death, stroke or embolism, recurrence and progression to chronic AF. Interestingly, LV mass increased significantly only in the Lone AF group.


2018 ◽  
Vol 14 (2) ◽  
pp. 23-25
Author(s):  
A Kidwai

Introduction: Atrial fibrillation (AF) is the commonest cardiac arrhythmia encountered in clinical practice. The hall mark sign of atrial fibrillation is an irregular rhythm in ECG with no obvious P wave. In Western countries, Coronary Artery Disease (CAD) is the commonest cause of AF. Plenty of data and studies are available regarding the epidemiology and etiology of AF in the Western Population but similar studies and data in Nepal are scarce. This study was therefore conducted with an objective to establish the etiological profile of atrial fibrillation patients in mid western Nepal.Materials and Methods: This was a hospital based study, carried out in the Department of Internal Medicine, Nepalgunj Medical College Teaching Hospital, Nepalgunj, for a duration of 1 year from th th 14 September 2013 to 13 September 2014. A total of 74 consecutive cases diagnosed as AF were included in the study on the basis of inclusion and exclusion criteria.Results: A total of 74 consecutive patients were included in the study. The mean age of the subjects was 39.2 years. The majority of the subjects were below 50 years of age (70.27%). There were only 2 subjects below 19 and 3 patients above 70 years of age. Out of the 74 patients 52(70.2%) were from the age group of below 50 years of age. In western countries the incidence is higher in the elder population. Rheumatic heart disease was the most common etiology in this study with a total of 29 (39.2%) cases. CAD in our study was seen in 12 patients (16.2%). Overall structural heart disease was seen in 64(86.5%) cases and in the rest of the cases echocardiography was normal.Conclusion: This study has shown that the etiological profile of AF is different in patients attending our hospital situated in mid-western Nepal from western countries. Unlike the western countries AF is more common in the younger age group and the most common etiology in Nepal is RHD, whereas in western countries it is CAD.JNGMC, Vol. 14 No. 2 December 2016, Page: 23-25


2020 ◽  
Vol 19 (3) ◽  
pp. 2488
Author(s):  
V. K. Kurashin ◽  
N. Yu. Borovkova ◽  
N. N. Borovkov ◽  
V. A. Kurashina ◽  
T. E. Bakka

Aim. To assess clinical and pathogenetic characteristics of patients with atrial fibrillation (AF) hospitalized in cardiology department of the regional clinical hospital, and to clarify the related management strategy.Material and methods. A total of 1164 patients were hospitalized in cardiology department of N.A. Semashko Nizhny Novgorod Regional Clinical Hospital in 2017, of which 331 (28,4%) had AF. These patients were included in the study. We analyzed history data of all patients, standard diagnostic tests were carried out. The CHA2DS2-VASc score was used to determine the risk of thromboembolic events, and the HASBLED score — to determine the bleeding risk.Results. The average age of patients was 63,2±10,0 years. In all patients, AF was diagnosed before admission to the hospital. All patients were hospitalized according to hospital waiting lists due to underlying diseases. The most common diseases were coronary artery disease, mainly in combination with hypertension, inflammatory and dystrophic myocardial disorders. Twenty-four patients were hospitalized due to heart failure progression. Nonvalvular AF prevailed among patients. Most patients had a permanent AF (58,3%), the second place took pa - roxysmal AF (36,8%). Much less frequently (4,9%), a persistent AF was observed. Stratification of risk factors for stroke, systemic thromboembolism, as well as for bleeding when indicated for anticoagulant therapy was carried out. Based on the results, oral anticoagulants were indicated for 260 (78,8%) of participants, while only 38,8% received them before hospitalization.Conclusion. Among patients hospitalized in the cardiology department, 28,4% had AF. The most common was nonvalvular AF, associated mainly with coronary artery disease, essential hypertension and their combination. Anticoagulant therapy was indicated for 78,8% of patients, while only 38,8% received it before. This requires further optimization of management of AF patients.


Author(s):  
Benita A. Bamgbade ◽  
David D. McManus ◽  
Robert Helm ◽  
Jordy Mehawej ◽  
Jerry H. Gurwitz ◽  
...  

Background Little research has evaluated patient bleeding risk perceptions in comparison with calculated bleeding risk among oral anticoagulant users with atrial fibrillation. Our objective was to investigate underestimation of bleeding risk and to describe the characteristics and patient‐reported outcomes associated with underestimation of bleeding risk. Methods and Results In the SAGE‐AF (Systematic Assessment of Geriatric Elements in Atrial Fibrillation) study, a prospective cohort study of patients ≥65 years with atrial fibrillation, a CHA 2 DS 2 ‐VASc risk score ≥2 and who were on oral anticoagulant therapy, we compared patients’ self‐reported bleeding risk with their predicted bleeding risk from their HAS‐BLED score. Among the 754 participants (mean age 74.8 years, 48.3% women), 68.0% underestimated their bleeding risk. Participants who were Asian or Pacific Islander, Black, Native American or Alaskan Native, Mixed Race or Hispanic (non‐White) (adjusted OR [AOR], 0.45; 95% CI, 0.24–0.82) and women (AOR, 0.62; 95% CI, 0.40–0.95) had significantly lower odds of underestimating their bleeding risk than respective comparison groups. Participants with a history of bleeding (AOR, 3.07; 95% CI, 1.73–5.44) and prior hypertension (AOR, 4.33; 95% CI, 2.43–7.72), stroke (AOR, 5.18; 95% CI, 1.87–14.40), or renal disease (AOR, 5.05; 95% CI, 2.98–8.57) had significantly higher odds of underestimating their bleeding risk. Conclusions We found that more than two‐thirds of patients with atrial fibrillation on oral anticoagulant therapy underestimated their bleeding risk and that participants with a history of bleeding and several comorbid conditions were more likely to underestimate their bleeding risk whereas non‐Whites and women were less likely to underestimate their bleeding risk. Clinicians should ensure that patients prescribed oral anticoagulant therapy have a thorough understanding of bleeding risk.


Sign in / Sign up

Export Citation Format

Share Document