Dual antiplatelet therapy after endovascular revascularization of infrainguinal arteries

Abstract Background: The duration of antiplatelet therapy after endovascular revascularization in patients with lower-extremity artery disease (LEAD) has not been well-established. This study aimed to investigate the optimal strategy for antiplatelet therapy after successful endovascular revascularization in patients with LEAD. Methods: From April 2009 to June 2019, 376 patients with LEAD underwent successful endovascular revascularization. After the procedure, the patients received mono-antiplatelet therapy (MAPT) or dual-antiplatelet therapy (DAPT) of various durations and were classified into 2 groups (MAPT or DAPT < 6 months vs. DAPT ≥ 6 months). The primary outcomes were major adverse cardiovascular events (MACE) and major adverse limb events (MALE). The safety outcome was moderate-to-severe bleeding according to the Global Use of Strategies to Open Occluded Arteries (GUSTO) criteria.Results: Over the 40-month follow-up period, MACE occurred less frequently in the DAPT ≥ 6 months group than the MAPT or DAPT < 6 months group (12.4% vs. 23.8%; hazard ratio: 0.62; 95% confidence interval: 0.40 to 0.97; p = 0.038) after inverse probability-weighted adjustment and propensity-score matching. The incidence of MALE showed no significant intergroup difference (17.1% vs. 13.1%; hazard ratio: 0.94; 95% confidence interval: 0.56 to 1.59; p = 0.822). The incidence of moderate-to-severe GUSTO bleeding also showed no significant intergroup difference (3.5% vs. 4.9%; hazard ratio: 0.59; 95% confidence interval: 0.21 to 1.63; p = 0.308). Conclusions: For patients with LEAD, DAPT for ≥6 months after endovascular revascularization was associated with a lower incidence of MACE without increasing the risk of bleeding events.

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Dual Antiplatelet Therapy: Is More Better?

Internal Medicine News ◽

10.1016/s1097-8690(06)74048-3 ◽

2006 ◽

Vol 39 (16) ◽

pp. 39

Author(s):

JON O. EBBERT ◽

ERIC G. TANGALOS

Keyword(s):

Antiplatelet Therapy ◽

Dual Antiplatelet Therapy

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Anticoagulation in addition to dual antiplatelet therapy has no impact on long-term follow-up after endovascular treatment of (sub)acute lower limb ischemia

VASA ◽

10.1024/0301-1526/a000786 ◽

2019 ◽

Vol 48 (4) ◽

pp. 321-329

Author(s):

Mariya Kronlage ◽

Erwin Blessing ◽

Oliver J. Müller ◽

Britta Heilmeier ◽

Hugo A. Katus ◽

...

Keyword(s):

Endovascular Treatment ◽

Antiplatelet Therapy ◽

Dual Antiplatelet Therapy ◽

Limb Ischemia ◽

Bleeding Complications ◽

Severe Bleeding ◽

Short Term ◽

Long Term Follow Up

Summary. Background: To assess the impact of short- vs. long-term anticoagulation in addition to standard dual antiplatelet therapy (DAPT) upon endovascular treatment of (sub)acute thrombembolic occlusions of the lower extremity. Patient and methods: Retrospective analysis was conducted on 202 patients with a thrombembolic occlusion of lower extremities, followed by crirical limb ischemia that received endovascular treatment including thrombolysis, mechanical thrombectomy, or a combination of both between 2006 and 2015 at a single center. Following antithrombotic regimes were compared: 1) dual antiplatelet therapy, DAPT for 4 weeks (aspirin 100 mg/d and clopidogrel 75 mg/d) upon intervention, followed by a lifelong single antiplatelet therapy; 2) DAPT plus short term anticoagulation for 4 weeks, followed by a lifelong single antiplatelet therapy; 3) DAPT plus long term anticoagulation for > 4 weeks, followed by a lifelong anticoagulation. Results: Endovascular treatment was associated with high immediate revascularization (> 98 %), as well as overall and amputation-free survival rates (> 85 %), independent from the chosen anticoagulation regime in a two-year follow up, p > 0.05. Anticoagulation in addition to standard antiplatelet therapy had no significant effect on patency or freedom from target lesion revascularization (TLR) 24 months upon index procedure for both thrombotic and embolic occlusions. Severe bleeding complications occurred more often in the long-term anticoagulation group (9.3 % vs. 5.6 % (short-term group) and 6.5 % (DAPT group), p > 0.05). Conclusions: Our observational study demonstrates that the choice of an antithrombotic regime had no impact on the long-term follow-up after endovascular treatment of acute thrombembolic limb ischemia whereas prolonged anticoagulation was associated with a nominal increase in severe bleeding complications.

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TWILIGHT: A Randomized Trial of Ticagrelor Monotherapy Versus Ticagrelor Plus Aspirin Beginning at 3 Months in High-risk Patients Undergoing Percutaneous Coronary Intervention

US Cardiology Review ◽

10.15420/usc.2019.02 ◽

2020 ◽

Vol 14 ◽

Author(s):

Johny Nicolas ◽

Usman Baber ◽

Roxana Mehran

Keyword(s):

Percutaneous Coronary Intervention ◽

High Risk ◽

Antiplatelet Therapy ◽

Dual Antiplatelet Therapy ◽

Coronary Intervention ◽

Bleeding Events ◽

High Risk Patients ◽

Risk Of Death ◽

Percutaneous Coronary ◽

Risk Patients

A P2Y12 inhibitor-based monotherapy after a short period of dual antiplatelet therapy is emerging as a plausible strategy to decrease bleeding events in high-risk patients receiving dual antiplatelet therapy after percutaneous coronary intervention. Ticagrelor With Aspirin or Alone in High-Risk Patients After Coronary Intervention (TWILIGHT), a randomized double-blind trial, tested this approach by dropping aspirin at 3 months and continuing with ticagrelor monotherapy for an additional 12 months. The study enrolled 9,006 patients, of whom 7,119 who tolerated 3 months of dual antiplatelet therapy were randomized after 3 months into two arms: ticagrelor plus placebo and ticagrelor plus aspirin. The primary endpoint of interest, Bleeding Academic Research Consortium type 2, 3, or 5 bleeding, occurred less frequently in the experimental arm (HR 0.56; 95% CI [0.45–0.68]; p<0.001), whereas the secondary endpoint of ischemic events was similar between the two arms (HR 0.99; 95% CI [0.78–1.25]). Transition from dual antiplatelet therapy consisting of ticagrelor plus aspirin to ticagrelor-based monotherapy in high-risk patients at 3 months after percutaneous coronary intervention resulted in a lower risk of bleeding events without an increase in risk of death, MI, or stroke.

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