Table 2.
Study year | Author | Study design | Study participants | Outcome | Stroke/thromboembolism | Bleeding | |
---|---|---|---|---|---|---|---|
Antiplatelet agent: aspirin | |||||||
1997–2008 | Olesen et al. [5] | Retrospective observational (Cox-regression analysis) | All patients discharged from the hospital with a diagnosis of non-valvular AF (n=901) | Primary: hospitalization or death from stroke or systemic thromboembolism, bleeding | HR, 0.88; 95% CI, 0.59–1.32; P=0.54 | HR, 1.63; 95% CI, 1.18–2.26; P=0.003 | |
Secondary: risk of stroke or systemic thromboembolism (excluding TIA) | |||||||
1997–2011 | Bonde et al. [44] | Retrospective observational | All patients discharged from hospital with diagnosis of non-valvular AF and RRT (n=1,728) | Hospitalization/death from stroke/thromboembolism, a composite of fatal stroke/fatal bleeding | HR, 1.82; 95% CI, 1.55–2.14 | HR for all stroke or all bleeding 1.06; 95% CI, 0.83–1.36* | |
1998–2006 | Chen et al. [43] | Retrospective observational | ESRD patients on dialysis after first‐time ischemic stroke (n=1,936) | Primary: death and readmission to hospital for stroke | HR for primary outcomes in patients treated with aspirin, 0.67; P<0.001 | HR, 0.89; P=0.291 | |
Secondary: death, stroke or bleeding | HR for readmission for stroke, 0.72; P=0.002 | ||||||
Vitamin K antagonist: warfarin | |||||||
1997–2008 | Olesen et al. [5] | Retrospective observational (Cox-regression analysis) | All patients discharged from the hospital with a diagnosis of non-valvular AF (n=901) | Primary-hospitalization or death from stroke or systemic thromboembolism, bleeding | With warfarin use: HR, 0.44; 95% CI, 0.26–0.74; P=0.002 | HR, 1.27; 95% CI, 0.911–1.77; P=0.15 | |
Secondary: risk of stroke or systemic thromboembolism (excluding TIA) | |||||||
1997–2011 | Bonde et al. [44] | Retrospective observational | All patients discharged from hospital with diagnosis of non-valvular AF and RRT (n=1,728) | Hospitalization/death from stroke/thromboembolism, a composite of fatal stroke/fatal bleeding | Rate per 100 person-years with use of warfarin, 4.8; 95% CI, 3.2–6.4; as compared to no warfarin, 7.3; 95% CI, 6.2–8.5 | HR for all stroke/bleeding, 1.06; 95% CI, 0.83–1.36 | |
1998–2007 | Shah et al. [61] | Retrospective cohort | Patients aged ≥65 years admitted to a hospital with a diagnosis of AF (dialysis patients n=1,626) | First hospital admission or emergency department visit for stroke or bleeding | Stroke: HR, 1.14; 95% CI, 0.78–1.67 | Bleeding: HR, 1.44; 95% CI, 1.13–1.85 | |
2002–2015 | Abuhasira et al. [4] | Retrospective cohort | All patients who initiated dialysis during the study period and developed AF (n=304) | CVA and major bleeding event | Risk of CVA with use of warfarin as compared to no warfarin (24.2% vs. 12.9%, P=0.026) | Risk with use of warfarin as compared to no warfarin (16.7% vs. 9.2%, P=0.09) | |
2006–2013 | Waddy et al. [10] | Retrospective observational cohort | ESRD patients who initiated HD and subsequently diagnosed with AF (n=56,587) | Primary outcome: all-cause stroke | Ischemic stroke: aHR, 0.79; 95% CI, 0.66–0.95 | GI bleeding: aHR, 1.12; 95% CI, 0.94–1.36 | |
Secondary outcomes: death, ischemic stroke, hemorrhagic stroke, GI bleeding | Hemorrhagic stroke: aHR, 1.22; 95% CI, 1.03–1.46 | ||||||
2006–2015 | Kai et al. [62] | Propensity scorematched cohort | ESRD patients with AF (n=888) | Stroke, bleeding, and death | Ischemic stroke: HR, 0.68; 95% CI, 0.52–0.91 | GI bleeding: HR, 0.97; 95% CI, 0.77–1.2 | |
Hemorrhagic stroke: HR, 1.2; 95% CI, 0.6–2.2 | |||||||
2007–2011 | Shen et al. [63] | Retrospective observational cohort | ESRD patients on HD with new diagnosis of AF and no prior use of warfarin (n=12,284) | Death, ischemic stroke, hemorrhagic stroke, and severe GI bleeding | Ischemic stroke: HR, 0.68; 95% CI, 0.47–0.99 | GI bleeding: HR, 1.00; 95% CI, 0.69–1.44 | |
Hemorrhagic stroke: HR, 0.82; 95% CI, 0.37–1.81 | |||||||
2009–2013 | Yoon et al. [64] | Propensity matched cohort | Patients with ESRD and AF (n=5,548) | Ischemic stroke, hemorrhagic stroke, and GI bleeding | Ischemic stroke: HR, 0.95; 95% CI, 0.78–1.15; P=0.569 | GI bleeding with the warfarin use (7.5%) and no warfarin use (6.6%), P=0.208 | |
Hemorrhagic stroke: HR, 1.56, 95% CI, 1.10–2.22; P=0.013 | |||||||
Direct oral anticoagulant: apixaban | |||||||
2010–2015 | Siontis et al. [57] | Retrospective cohort | Patients with AF and ESRD undergoing dialysis who initiated treatment with an oral anticoagulant (n=25,523) | Stroke or systemic embolism, major bleeding, GI bleeding, intracranial bleeding, and death | Stroke/systemic embolism for apixaban vs. warfarin: HR, 0.88; 95% CI, 0.69–1.12; P=0.29 | GI bleeding for apixaban vs. warfarin: HR, 0.86; 95% CI, 0.72–1.02; P=0.09 | |
Intracranial bleed for apixaban vs. warfarin: HR, 0.79; 95% CI 0.49–1.26; P=0.32 | |||||||
2017 | Chokesuwattanaskul et al. [58] | Meta-analysis | Studies that reported bleeding complications or thromboembolic events in the use of apixaban in patients with CKD stage 4–5 or ESRD on dialysis (5 studies, 43,850 patients) | Thromboembolic event, major bleeding | Pooled OR, 0.56; 95% CI, 0.23–1.39 | Pooled OR, 0.42; 95% CI, 0.28–0.61 | |
2019 | Kuno et al. [59] | Meta-analysis | Studies that investigated the efficacy and safety of different OAC strategies in patients with AF on longterm dialysis | Ischemic stroke/systemic thromboembolism, major bleeding, and all-cause mortality | As compared to no-anticoagulation, Apixaban 2.5 mg: HR, 1.00; 95% CI, 0.52–1.93 Apixaban 5 mg: HR, 0.59; 95% CI, 0.30–1.17 | Risk of bleeding with warfarin as compared to Apixaban 2.5 mg: HR, 1.40; 95% CI, 1.07–1.82 Apixaban 5 mg: HR 1.41; 95% CI, 1.07–1.88 | |
2020 | Mavrakanas et al. [65] | Propensity cohort | Patients on maintenance dialysis with incident, nonvalvular AF treated with apixaban (n=521) | Primary outcome: hospitalization for new CVA, TIA, or systemic thromboembolism | Ischemic stroke for apixaban as compared to no treatment: HR, 0.85; 95% CI, 0.36–1.98; P=0.71 | Major bleeding for apixaban as compared to no treatment: HR, 2.76; 95% CI, 1.38–5.52; P=0.004 | |
Secondary outcome: fatal or intracranial bleeding | Hemorrhagic stroke for apixaban as compared to no treatment: HR, 1.89; 95% CI, 0.65–5.49; P=0.24 |
ESRD, end-stage renal disease; AF, atrial fibrillation; TIA, transient ischemic attack; HR, hazard ratio; CI, confidence interval; RRT, renal replacement therapy; CVA, cerebrovascular accident; HD, hemodialysis; GI, gastrointestinal; aHR, adjusted hazard ratio; CKD, chronic kidney disease; OR, odds ratio; OAC, oral anticoagulants.
High risk (CHA2DS2-VASc score ≥2).