scholarly journals The Risk of Gastrointestinal Bleeding between Non-Vitamin K Antagonist Oral Anticoagulants and Vitamin K Antagonists in the Asian Atrial Fibrillation Patients: A Meta-Analysis

2020 ◽  
Vol 18 (1) ◽  
pp. 137
Author(s):  
Kuang-Tsu Yang ◽  
Wei-Chih Sun ◽  
Tzung-Jiun Tsai ◽  
Feng-Woei Tsay ◽  
Wen-Chi Chen ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Gastrointestinal Bleeding ◽  
Vitamin K ◽  
Meta Analysis ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Vitamin K Antagonist ◽  
Cochrane Library ◽  
Secondary Outcome ◽  
Optimal Dosage

Background: Non-vitamin K antagonist oral anticoagulants (NOACs) are more commonly used to prevent atrial fibrillation (AF) patients from thromboembolic events than vitamin K antagonists (VKAs). However, the gastrointestinal bleeding (GIB) risk in the Asian AF patients associated with NOACs in comparison with VKAs remained unaddressed. Materials and Methods: A systematic search of studies on NOACs and VKAs in the Asian AF patients was conducted in PubMed, Cochrane Library, and ClinicalTrials.gov. The primary outcome was the hazard ratio (HR) of any GIB associated with NOACs versus VKAs. The secondary outcome was the GIB risks in different kinds of NOACs compared with VKAs. Results: This meta-analysis included two randomized controlled trials (RCTs) and four retrospective studies, comprising at least 200,000 patients in total. A significantly lower HR of GIB risks was found in all kinds of NOACs than VKAs in the Asian AF patients (HR: 0.633; 95% confidence interval: 0.535–0.748; p < 0.001). Additionally, the GIB risks of different NOACs were apixaban (HR: 0.392), edoxaban (HR: 0.603), dabigatran (HR: 0.685), and rivaroxaban (HR: 0.794), respectively. Conclusions: NOACs significantly reduced the risk of GIB in the Asian AF patients compared with VKAs. In the four NOACs compared with VKAs, apixaban probably had a trend of the least GIB risk. We need further head-to-head studies of different NOACs to confirm which NOAC is the most suitable for Asian AF patients and to know the optimal dosage regimen of different NOACs.

scholarly journals The Efficacy of Non–Vitamin K Antagonist Oral Anticoagulants in the Prevention of Left Atrial Thrombus in Patients With Atrial Fibrillation Compared With Vitamin K Antagonists: A Meta-Analysis

2020 ◽  
Vol 23 (6) ◽  
pp. E733-E739
Author(s):  
Jun Liu ◽  
Yiping Wu ◽  
Shurui Li ◽  
Lihong Song ◽  
Chengdong Hu
Keyword(s):  
Atrial Fibrillation ◽  
Vitamin K ◽  
Left Atrial ◽  
Meta Analysis ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Vitamin K Antagonist ◽  
Cochrane Library ◽  
Left Atrial Thrombus ◽  
Atrial Thrombus

Background: There is still a paucity of data on the efficacy of non–vitamin K antagonist oral anticoagulants (NOACs) in the prevention of left atrial thrombus (LAT) formation before cardioversion or catheter ablation. To assess the efficacy of NOACs in the prevention of LAT in patients with non-valvular atrial fibrillation (NVAF) compared with vitamin K antagonists (VKAs), we conducted a meta-analysis. Methods: We searched PubMed, Embase, and the Cochrane Library databases. For meta-analysis, dichotomous variables were analyzed by using the odds ratios (OR) computed using the Mantel Haenszel method (random models). All results were reported with 95% confidence intervals (CI). Results: A total of 13 studies (one randomized controlled investigation and 12 observational studies) were included in the meta-analysis. There was no statistically significant difference between the NOACs and VKAs groups with respect to the odds of LAT/LAAT formations (OR 0.79; 95% CI: 0.52-1.21; P = .29; (I2 = 14%). Conclusions: NOACs were as effective as VKAs in the prevention of LAT/LAAT formation in patients with NVAF. Though patients on NOACs therapy showed a lower incidence of LAT/LAAT formation compared with VKAs, it was not significant (P = .29).

scholarly journals Efficacy and Safety of Non-Vitamin K Antagonist Oral Anticoagulants in Patients with Atrial Fibrillation and Cancer in Real World: Meta-Analysis of Retrospective Observational Studies

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Cao B ◽  
Hu X ◽  
Chen M ◽  
Shen M ◽  
Xu L
Keyword(s):  
Atrial Fibrillation ◽  
Vitamin K ◽  
Real World ◽  
Observational Studies ◽  
Meta Analysis ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Vitamin K Antagonist ◽  
Efficacy And Safety ◽  
Patients With Cancer

Background: Evidence on the safety and effectiveness of Non-Vitamin K Antagonist Oral Anticoagulants (NOACs) in Atrial Fibrillation (AF) patients with cancer is rather limited, so we performed this meta-analysis to compare the efficacy and safety of NOACs with vitamin K antagonists (VKAs) in real-world patients with AF and cancer.

scholarly journals Comparison of transesophageal echocardiography findings after different anticoagulation strategies in patients with atrial fibrillation: a systematic review and meta-analysis

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Jian Yang ◽  
Xuan Zhang ◽  
Xi-ying Wang ◽  
Chi Zhang ◽  
Song-zan Chen ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Transesophageal Echocardiography ◽  
Vitamin K ◽  
Meta Analysis ◽  
Vitamin K Antagonists ◽  
Oral Anticoagulants ◽  
Perioperative Period ◽  
Chronic Atrial Fibrillation ◽  
Cochrane Library ◽  
Significant Difference

Abstract Background High risk of embolic events exists in both patients with chronic atrial fibrillation (AF) and patients in the perioperative period of ablation (effective treatment for AF). Therefore, anticoagulant therapy is important. Oral anticoagulants can be divided into two major categories: vitamin K antagonists (VKAs) and non-vitamin K antagonist oral anticoagulants (NOACs). VKAs, represented by warfarin, have been widely used as traditional anticoagulants, whereas NOACs have been used in clinical practice, but their anticoagulant effects and side effects are still the focus of research. We used a meta-analysis to compare the incidence of left atrial thrombi (LAT) between different anticoagulants. Methods We searched PubMed, EMBASE, Web of Science, and the Cochrane Library databases for observational studies that compared the transesophageal echocardiography (TEE) findings for patients treated with NOACs and VKAs. The incidence of LAT and dense spontaneous echocardiographic contrast (dense SEC) were extracted as the basis of the meta-analysis. Results Fifteen studies were included in the meta-analysis. We found that patients anticoagulated with NOACs and VKAs had similar incidence of LAT (OR = 0.74, 95%CI: 0.55–1.00). After excluding the heterogeneous article by sensitivity analysis, we found the incidence of LAT in patients anticoagulated with NOACs is lower than VKAs (OR = 0.59, 95%CI: 0.42–0.84). The results of subgroup analysis showed that the incidence of LAT among three types of NOACs have no significant difference (dabigatran vs. rivaroxaban, OR = 1.16 [0.75, 1.81]; rivaroxaban vs. apixaban, OR = 0.97 [0.54, 1.74]; dabigatran vs. apixaban, OR = 1.09 [0.55, 2.16]). Conclusion Patients anticoagulated with NOACs may have lower incidence of LAT than VKAs. The incidence of LAT among different type of NOACs are similar.

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