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Updated: Feb 12, 2026

In Vitro Thrombosis Test for Ventricular Assist Devices
Published on: March 21, 2025
Cerebrovascular Events After Continuous-Flow Left Ventricular Assist Devices
Pouya Tahsili-Fahadan1,2, David R Curfman3, Albert A Davis3
1Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Insights
Cerebrovascular events (CVEs) are common after continuous-flow left ventricular assist device (CF-LVAD) implantation, increasing mortality. Optimal stroke prevention strategies for these patients require further investigation.
Area of Science:
- Cardiology
- Neurology
- Medical Devices
Background:
- Cerebrovascular events (CVEs) are a significant complication following continuous-flow left ventricular assist device (CF-LVAD) implantation.
- Understanding CVE incidence, risk factors, and outcomes is crucial for patient management.
Purpose of the Study:
- To investigate the incidence, subtypes, and risk factors of CVEs after CF-LVAD implantation.
- To evaluate the impact of CVEs on patient outcomes, including mortality and heart transplantation rates.
Main Methods:
- Retrospective analysis of clinical and neuroimaging data from 372 CF-LVAD patients (May 2005 - December 2013).
- Statistical methods were employed to identify risk factors and outcome associations.
Main Results:
- CVEs occurred in 19% of patients, with ischemic and hemorrhagic types being most common.
- Risk factors included history of coronary artery disease and female gender for ischemic CVEs, and diabetes mellitus for hemorrhagic CVEs.
- CVE occurrence was linked to increased mortality, while heart transplantation improved survival.
Conclusions:
- CF-LVAD implantation is associated with high CVE rates and increased mortality.
- Further research is needed to establish optimal stroke prevention strategies in the post-LVAD population.
Background:
Cerebrovascular events (CVE) are among the most common and serious complications after implantation of continuous-flow left ventricular assist devices (CF-LVAD). We studied the incidence, subtypes, anatomical distribution, and pre- and post-implantation risk factors of CVEs as well as the effect of CVEs on outcomes after CF-LVAD implantation at our institution.
Methods:
Retrospective analysis of clinical and neuroimaging data of 372 patients with CF-LVAD between May 2005 and December 2013 using standard statistical methods.
Results:
CVEs occurred in 71 patients (19%), consisting of 35 ischemic (49%), 26 hemorrhagic (37%), and 10 ischemic+hemorrhagic (14%) events. History of coronary artery disease and female gender was associated with higher odds of ischemic CVE (OR 2.84 and 2.5, respectively), and diabetes mellitus was associated with higher odds of hemorrhagic CVE (OR 3.12). While we found a higher rate of ischemic CVEs in patients not taking any antithrombotic medications, no difference was found between patients with ischemic and hemorrhagic CVEs. Occurrence of CVEs was associated with increased mortality (HR 1.62). Heart transplantation was associated with improved survival (HR 0.02). In patients without heart transplantation, occurrence of CVE was associated with decreased survival.
Conclusions:
LVADs are associated with high rates of CVE, increased mortality, and lower rates of heart transplantation. Further investigations to identify the optimal primary and secondary stroke prevention measures in post-LVAD patients are warranted.
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