Publications by authors named "Ciaran Powers"

Introduction: Flow diversion is an effective first-line treatment for intracranial aneurysms; however, the rate of incomplete occlusion is not insignificant. Data in neuroendovascular literature is limited regarding the implications of persistent incomplete occlusion despite flow diversion.

Methods: We conducted a retrospective analysis of a prospectively maintained database and identified 125 consecutive patients with treatment naïve intracranial aneurysms who underwent flow diversion with the PED from April 2014 - November 2022.

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Article Synopsis
  • Carotid blowout syndrome (CBS) is a serious complication in patients with head and neck cancer, and this study evaluates the safety and outcomes of two different treatment methods: deconstructive embolization and reconstructive stenting.
  • From 80 cases analyzed, the CBS recurrence rate was found to be 23.8%, with most recurrences happening within 90 days after the initial event, highlighting a significant challenge in managing this condition.
  • The findings suggest that reconstructive stenting is associated with a higher rate of CBS recurrence (58.3%) compared to deconstructive methods (17.6%), indicating the need for careful monitoring and potential advancements in treatment strategies to improve patient outcomes.
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Introduction: Endovascular mechanical thrombectomy (EVT) has become the standard of care treatment for both intravenous tissue plasminogen activator eligible and ineligible patients presenting with an acute ischemic stroke due to a large vessel occlusion (LVO) within 24 h. Due to limited access to EVT, patients typically present to a non-EVT-capable center and are transferred to a larger, EVT-capable center. Quality improvement work has focused on improving this process to shorten the time to definitive recanalization of the affected vessel.

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Introduction: Venous sinus stenting is a well established alternative to cerebrospinal fluid diversion for the treatment of idiopathic intracranial hypertension (IIH) with associated venous sinus stenosis. During this procedure, distal guide catheter placement within the venous sinuses may be desirable to facilitate stent delivery. We report our initial experience using the TracStar LDP™ (Imperative Care, Campbell, USA, 0.

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Background: A number of large bore guide catheters are currently available for use in neuroendovascular surgery. This study represents a multi-institutional retrospective series of patients undergoing mechanical thrombectomy with the use of a TracStar Large Distal Platform (LDP) guide catheter and assessed its performance in vivo in 107 patients.

Objective: To review a multi-institutional initial experience with the TracStar LDP guide catheter during mechanical thrombectomy for emergent large vessel occlusion (ELVO).

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Objectives: Carotid blowout syndrome (CBS) is a rare, life-threatening complication for patients with head and neck cancer (HNC). The primary objective was to identify factors associated with survival following CBS.

Materials And Methods: A retrospective analysis of HNC patients treated at a single tertiary care hospital with CBS between 2016 and 2020 was performed.

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Objective: The impact of neurosurgical resident hospital coverage system, performed via a night float (12-hour shifts overnight) or a 24-hour call, on neurological surgery resident training and patient care is unknown.

Design: Retrospective review comparing night float and 24-hour call coverage on trainee surgical experience, elective time, annual program surveys, patient outcomes, and length of stay.

Setting: The Ohio State Wexner Medical Center Neurosurgery residency program, Columbus, Ohio.

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Background: Prior studies demonstrated reduced risk for venous thromboembolism (VTE) in neurosurgical patients secondary to prophylaxis with both heparin and low-molecular-weight heparin. The ability to monitor low-molecular-weight heparin by obtaining anti-factor Xa (anti-Xa) serum levels provides an opportunity to evaluate safety and efficacy. The aim of this study was to describe characteristics of patients who have anti-Xa levels outside of the goal range (0.

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Objective: There are few objective measures for evaluating individual performance throughout surgical residency. Two commonly used objective measures are the case log numbers and written board examination scores. The objective of this study was to investigate possible correlations between these measures.

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We received so many biographies of women neurosurgery leaders for this issue that only a selection could be condensed here. In all of them, the essence of a leader shines through. Many are included as "first" of their country or color or other achievement.

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In an effort, to curtail rising health care costs, government and private payers have begun to focus on measuring quality of care. Along with quality improvement initiatives, clinical practice guidelines may also be utilized to provide better care. Clinical practice guidelines are recommendations for clinicians about the care of patients with specific conditions.

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Background: We sought to determine the rate of early neurologic decline (END) in patients with acute ischemic stroke (AIS) with large vessel occlusion (LVO) who presented with mild deficits and received intravenous tissue plasminogen activator (IVtPA).

Methods: Among 1022 patients with AIS who received IVtPA from 2014 to 2019, we identified 313 (30.6%) with LVO, of which 94 (30%) presented with National Institute of Health Stroke Scale (NIHSS) score ≤7.

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Objective: Incomplete circle of Willis (CoW) configuration is an important risk factor for cerebrovascular pathology, namely aneurysm formation and ischemic stroke. This study was performed to characterize CoW variation using digital subtraction angiography and to identify demographic and physiologic features that may influence the risk of having an incomplete CoW configuration.

Materials And Methods: A retrospective review of 274 patients who underwent cerebral angiography by a single surgeon for any indication was conducted.

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Carotid artery stenosis accounts for up to 20% of ischemic strokes. Since the 1950 s, one of the primary surgical treatment for this condition is carotid endarterectomy (CEA). Because of improvement of medical therapy for carotid artery atherosclerosis and the increased use of carotid artery stents, CEA is indicated if the risk of stroke and death are low.

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Objective: The rapid processing of perfusion and diffusion (RAPID) system for automating perfusion and diffusion data from head computed tomography has improved acute ischemic stroke treatment by quickly and accurately identifying those patients who may benefit from thrombectomy. Collateral scoring (CS) of cerebral arteries using computed tomography angiography (CTA) has proven useful in predicting postintervention infarct volumes and functional outcomes in ischemic stroke patients. Here we evaluate the relationship between CS and RAPID software in an effort to augment triage and provide improved predictability of functional outcomes in ischemic stroke patients.

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Background: Though the Pipeline Embolization Device (Medtronic) is approved for use in adults 22 yr and older, the high efficacy and long-term durability of the device is attractive for treatment of intracranial aneurysms in younger patients who often have aneurysms less amenable to traditional endovascular treatments.

Objective: To report technical, angiographic, and clinical outcomes in patients aged 21 or below undergoing flow-diversion treatment for intracranial aneurysms.

Methods: Retrospective review across 16 institutions identified 39 patients aged 21 or below undergoing 46 treatment sessions with Pipeline Embolization Device placement between 2012 and 2018.

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Background: The observed to expected mortality ratio is a standardized way for reporting inpatient mortality and is used as a measure for hospital quality rankings and Centers for Medicare & Medicaid Services value-based payments. The goal of this study is to describe a single institution's mortality index improvement initiative through improved documentation of patient severity.

Methods: Data were prospectively collected October 2016 through May 2017 on patients discharged from the acute care surgery, open heart surgery, neurosurgery, and University Hospital East.

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Background And Purpose: Adjunctive treatments like balloon-assisted coil embolization (BACE) and stent-assisted coil embolization play a major role in the treatment of wide-neck and large intracranial aneurysms. The TransForm™ Occlusion Balloon Catheter (TOBC) registry is intended to evaluate the safety, efficacy, and efficiency of BACE using the TOBC.

Method And Study Design: The TOBC registry is a prospective multicenter registry trial.

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