Publications by authors named "Esref A Bayraktar"
Background And Purpose: Proximal protection devices, such as TransCarotid Artery Revascularization (TCAR, SilkRoad Medical, Sunnyvale), aim to yield better outcomes in carotid artery stenting (CAS) than distal protection devices by preventing plaque embolization to the brain. However, transfemoral catheters may not fully reverse flow from the external carotid artery (ECA) to the internal carotid artery (ICA). We assess a new balloon-sheath device, Femoral Flow Reversal Access for Carotid Artery Stenting (FFRACAS), for this purpose.
View Article and Find Full Text PDFBackground: As the use of flow diverters has expanded in recent years, predicting successful outcomes has become more challenging for certain aneurysms.
Objective: To provide neurointerventionalists with an understanding of the available machine learning algorithms for predicting the success of flow diverters in occluding aneurysms.
Methods: This study followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, and the four major medical databases (PubMed, Embase, Scopus, Web of Science) were screened.
Background: The evolution of embolic agents necessitates the use of microcatheters compatible with dimethyl sulfoxide (DMSO), with detachable tip microcatheters (DTMs) emerging as a significant innovation aimed at reducing the risk of catheter entrapment in embolization procedures. This study aims to compare the efficacy, safety, and DMSO compatibility of DTMs with non-detachable tip microcatheters (Non-DTMs) in the context of embolization treatments for neurovascular diseases.
Method: Following PRISMA guidelines, a systematic literature search was conducted across PubMed, Scopus, Embase, and Web of Science databases until February 25, 2024.
Background: The choice of angiography system could influence the outcomes of mechanical thrombectomy (MT) in the treatment of acute ischemic stroke (AIS), but its impact is not yet well understood. This study aims to compare the clinical and technical outcomes of MT performed with single plane versus biplane angiography systems.
Method: We conducted a systematic review and meta-analysis, following PRISMA guidelines, by searching PubMed, Embase, Web of Science, and Scopus to include studies on patients with AIS who underwent MT with either single plane or biplane angiography up to May 4, 2024.
Optimizing the hemodynamics of hand injections in neuroangiography.
Interv Neuroradiol
December 2024
Article Synopsis
- This study investigates how different methods of injecting contrast media can optimize flow rates, which affects the speed and ease of manual injections.
- It compares 100% contrast solutions, mixed contrast with saline, and a layered "Parfait" method, both at room temperature and after heating.
- Results show that both Parfait and mixed contrast solutions achieve significantly higher flow rates than 100% contrast, and heating the solutions enhances flow rates even further.
Article Synopsis
- The study examined the effectiveness of the Woven EndoBridge (WEB) device in sealing aneurysms by focusing on neck apposition and its relation to occlusion rates.
- Researchers analyzed data from 159 aneurysms treated between March 2017 and May 2022, finding that good neck apposition led to a significantly higher likelihood of achieving complete and adequate occlusion.
- The results suggested that minimizing WEB protrusion is important because it increased the risk of thromboembolic complications, even though it may have a limited effect on aneurysm occlusion rates.
Objective: Fibrin deposition represents a key step in aneurysm occlusion, promoting endothelization of implants and connective tissue organization as part of the aneurysm-healing mechanism. In this study, the authors introduce a novel in vitro testing platform for flow diverters based on human fibrinogen.
Methods: A flow diverter was deployed in 4 different glass models.
Background And Purpose: A single-aspiration maneuver using a large-volume syringe is a common and effective technique for aspiration thrombectomy. Multiple aspiration cycles using large aspiration syringes have been proposed as a means to improve the efficacy over single aspiration. In this study, we sought to investigate the efficacy of a "triple aspiration technique" in which a large-volume syringe is cycled 3 times before catheter retraction during aspiration thrombectomy.
View Article and Find Full Text PDFThe New Zealand rabbit elastase-induced arterial aneurysm of the right common carotid artery remains a widely used model for assessing the effectiveness and safety of new neuroendovascular devices.1 This model offers a simple and reliable platform for pre-clinical investigations, crucial for comprehending the biological processes underlying aneurysm healing after endovascular treatment.2 Notably, the induced aneurysm exhibits morphological, hemodynamic, and histological characteristics similar to human intracranial aneurysms.
View Article and Find Full Text PDFBackground And Purpose: Mechanical thrombectomy is a fundamental intervention for acute ischemic stroke treatment. While conventional techniques are effective, cyclic aspiration (CyA) shows potential for better recanalization rates. We aim to investigate factors affecting CyA and compare them with static aspiration (StA).
View Article and Find Full Text PDFBackground: In the era of tyrosine kinase inhibitors (TKIs), chronic myeloid leukemia (CML) patients generally live close to a normal lifespan, and the number of elderly patients with CML with comorbidities is increasing.
Patients And Methods: We retrospectively compared the efficacy and safety of frontline imatinib between elderly patients (≥60 years old) and younger patients (<60 years old) with CML.
Results: The study included 33 elderly and 125 younger patients.