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Treatment of Left Ventricular Thrombus With Direct Oral Anticoagulants: A Retrospective Observational Study
Raviteja R Guddeti1, Muhammad Anwar2, Ryan W Walters3
1Division of Cardiovascular Diseases.
Insights
Direct oral anticoagulants (DOACs) and vitamin K antagonists (VKAs) showed similar safety and efficacy for treating left ventricular thrombus. Both treatments resulted in comparable rates of stroke, bleeding, and thrombus resolution in this study.
Area of Science:
- Cardiology
- Pharmacology
- Clinical Medicine
Background:
- Limited data exists on the effectiveness of direct oral anticoagulants (DOACs) for left ventricular thrombus (LVT).
- Vitamin K antagonists (VKAs) are currently the standard oral anticoagulant treatment for LVT.
- This study investigates the safety and efficacy of DOACs compared to VKAs in LVT patients.
Purpose of the Study:
- To compare the safety and efficacy of DOACs versus VKAs in patients with newly diagnosed left ventricular thrombus.
- To evaluate outcomes including ischemic stroke, bleeding events, and echocardiographic resolution of LVT.
Main Methods:
- Retrospective study of 99 patients diagnosed with LVT between January 2012 and March 2019.
- Patients were divided into two groups: VKA (n=80) and DOAC (n=19).
- Outcomes were compared over a 1-year follow-up period, including stroke, bleeding, and LVT resolution via echocardiogram.
Main Results:
- No strokes occurred in the DOAC group, compared to 2 in the VKA group (P=0.49).
- Bleeding events were similar between groups (1 in DOAC, 4 in VKA; P=0.96).
- Left ventricular thrombus resolution rates were comparable: 80% for DOACs and 81% for VKAs (P=0.9).
Conclusions:
- DOACs and VKAs demonstrate similar rates of stroke and bleeding in patients with left ventricular thrombus.
- These findings suggest DOACs may be a viable alternative to VKAs for LVT treatment.
- Further confirmation through randomized clinical trials is warranted to solidify these results.
Background:
There is limited data on the efficacy of direct oral anticoagulants (DOACs) for the treatment of left ventricular thrombus. Currently, vitamin K antagonists (VKAs) remain the preferred oral anticoagulant for left ventricular thrombus. In this retrospective study, we assessed the safety and efficacy of DOACs in comparison to VKAs in patients with a new diagnosis of left ventricular thrombus.
Methods:
We retrospectively identified all patients admitted to the 5 Catholic Health Initiative Omaha hospitals with a diagnosis of left ventricular thrombus between January 2012 and March 2019 and were discharged on oral anticoagulants. Patients were stratified into 2 groups: VKAs or DOACs and followed for up to 1 year. We compared the outcomes of ischemic stroke, bleeding, and echocardiographic resolution of left ventricular thrombus between the 2 groups.
Results:
A total of 99 patients were included in this study (mean age: 61 years, 29% females). Of these, 80 (81%) were discharged on VKAs and 19 (19%) on DOACs. Stroke within 1 year of diagnosis occurred in 2 patients in the VKA group and none in the DOAC group (P = 0.49). Bleeding events were observed in 5 patients (4 in the VKA group and 1 in the DOAC group; P = 0.96). Ninety patients had follow-up echocardiogram; resolution of left ventricular thrombus was similar between the 2 groups (VKAs vs DOACs: 81% vs 80%; P = 0.9).
Conclusion:
In patients with left ventricular thrombus, DOACs and VKAs had similar rates of stroke and bleeding. These findings need confirmation in randomized clinical trials.
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